外星生命 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "外星生命" in Chinese language version.

refsWebsite

Global rank Chinese rank

150web.archive.org

1^st place

35harvard.edu

18^th place

57^th place

34doi.org

2^nd place

23^rd place

18nasa.gov

75^th place

140^th place

17nih.gov

4^th place

5^th place

8arxiv.org

69^th place

254^th place

8semanticscholar.org

11^th place

332^nd place

6archive.org

6^th place

4^th place

5space.com

936^th place

1,099^th place

5bbc.co.uk

8^th place

32^nd place

4universetoday.com

3,691^st place

4,223^rd place

4sciencemag.org

857^th place

506^th place

4nytimes.com

7^th place

31^st place

4discovery.com

1,299^th place

1,412^th place

3nsa.gov

7,043^rd place

5,527^th place

3newscientist.com

774^th place

706^th place

3archive.today

14^th place

18^th place

3worldcat.org

5^th place

12^th place

3youtube.com

9^th place

2^nd place

3arizona.edu

1,592^nd place

1,417^th place

2sina.com.cn

144^th place

3^rd place

2163.com

372^nd place

16^th place

2webcitation.org

24^th place

29^th place

2exoplanet.eu

9,995^th place

low place

2daviddarling.info

7,061^st place

6,580^th place

2planetary.org

5,100^th place

3,955^th place

2xinhuanet.com

309^th place

19^th place

2books.google.com

3^rd place

8^th place

2the-scientist.com

7,827^th place

5,345^th place

2zenodo.org

621^st place

1,608^th place

2nature.com

234^th place

227^th place

2bbc.com

20^th place

41^st place

2lds.org

5,547^th place

4,605^th place

2chinasona.org

low place

2guardian.co.uk

197^th place

183^rd place

2sciencenet.cn

low place

485^th place

2spiegel.de

66^th place

736^th place

2wikipedia.org

low place

1chinanews.com

1,432^nd place

50^th place

1xinmin.cn

7,768^th place

301^st place

1ipap.jp

low place

1telegraph.co.uk

30^th place

111^th place

1pnas.org

1,293^rd place

763^rd place

1handle.net

102^nd place

492^nd place

1msoe.edu

low place

1utep.edu

low place

1hoyle.org.uk

low place

1dailygalaxy.com

low place

1esa.int

1,482^nd place

1,517^th place

1wsu.edu

3,088^th place

2,075^th place

1skymania.com

low place

1egu2012.eu

low place

1psu.edu

207^th place

628^th place

1nbcnews.com

137^th place

538^th place

1uvic.ca

7,619^th place

7,085^th place

1discovermagazine.com

3,042^nd place

3,065^th place

1utexas.edu

916^th place

1,065^th place

1spaceflightnow.com

2,930^th place

3,115^th place

1researchgate.net

120^th place

337^th place

1astrobio.net

low place

6,248^th place

1cpst.net.cn

low place

1ijass.org

low place

1seti.org

low place

1nhao.jp

low place

1berkeley.edu

580^th place

642^nd place

1islandone.org

low place

1sohu.com

343^rd place

13^th place

1usatoday.com

41^st place

182^nd place

1newser.com

low place

1csmonitor.com

791^st place

1,198^th place

1stanford.edu

179^th place

275^th place

1ohr.edu

low place

1torah.org

low place

1alislam.org

8,021^st place

low place

1crisismagazine.com

low place

1challzine.net

low place

1positiveatheism.org

low place

1cosmovisions.com

low place

1ldsces.org

low place

1war-of-the-worlds.org

low place

1nicap.org

low place

1presidentialufo.com

low place

1roswellproof.com

low place

1crichton-official.com

low place

1faqs.org

4,871^st place

2,410^th place

1amazon.com

105^th place

269^th place

1vatican.va

281^st place

395^th place

1padrefunes.blogspot.com

low place

1washingtonpost.com

34^th place

129^th place

1journalofcosmology.com

low place

1abc.net.au

139^th place

367^th place

1irishcentral.com

2,029^th place

9,813^th place

1cnn.com

28^th place

71^st place

1derstandard.at

743^rd place

6,208^th place

1royalsocietypublishing.org

1,993^rd place

1,521^st place

1chinataiwan.org

low place

5,779^th place

1ifeng.com

542^nd place

27^th place

1phys.org

1,283^rd place

2,386^th place

1setileague.org

low place

1cntv.cn

4,826^th place

250^th place

1orf.at

418^th place

4,892^nd place

1ibtimes.com

911^th place

1,176^th place

1boingboing.net

3,475^th place

7,995^th place

1nypost.com

208^th place

695^th place

17naer.com

low place

1foxnews.com

152^nd place

440^th place

1weforum.org

1,771^st place

2,182^nd place

163.com

news.163.com

霍金为何警告最好别惹外星人？. 2010-05-17 [2012-08-13]. （原始内容存档于2013-06-15）.
联合国否认设ET接待大使神秘外空司只为技术开发之用. 2010-09-29 [2012-09-09]. （原始内容存档于2013-06-15）（中文）.

7naer.com

联合国设立外太空事务办公室任命星际外交官. 2010-09-27 [2012-09-09]. （原始内容存档于2013-06-03）（中文）.

abc.net.au

Kerry Sheridan. NASA shoots down alien fossil claims. ABC News. 7 March 2011 [2011-03-07]. （原始内容存档于2011-07-18）.

alislam.org

Revelation, Rationality, Knowledge & Truth, by Mirza Tahir Ahmad. Chapter; The Quran and Extraterrestrial Life. [2013-06-16]. （原始内容存档于2013-06-03）.

amazon.com

Peter Ward, Donald Brownlee. Rare Earth: Why Complex Life is Uncommon in the Universe. Amazon. [2012-10-21]. （原始内容存档于2015-11-03）（英语）.

archive.org

Sagan, Carl. The Cosmic Connection. Anchor Books (Anchor Press / Doubleday). 1973: 47.
Arrhenius, Svante. Worlds in the Making: The Evolution of the Universe. trans. H. Borns. Harper & Brothers. March 1908. OCLC 1935295.
Grotzinger, John P. Introduction to Special Issue – Habitability, Taphonomy, and the Search for Organic Carbon on Mars. Science. 24 January 2014, 343 (6169): 386–387. Bibcode:2014Sci...343..386G. PMID 24458635. doi:10.1126/science.1249944 .
Catling, David C. Astrobiology: A Very Short Introduction. Oxford: Oxford University Press. 2013: 99. ISBN 978-0-19-958645-5.
Chambers, Paul. Life on Mars; The Complete Story. London: Blandford. 1999. ISBN 0-7137-2747-0.
Campbell, W. Joseph. Getting it wrong : ten of the greatest misreported stories in American Journalism. Berkeley: University of California Press. 2010: 39. ISBN 978-0-520-26209-6.

archive.today

How many galaxies are there?. imagine.gsfc.nasa.go. [2010-02-01]. （原始内容存档于2012-07-11）.
Bortman, Henry. Was Venus Alive? 'The Signs are Probably There'. Space.com. 26 August 2004 [22 May 2016]. （原始内容存档于2016-03-04）.
Venezia, Todd. UN names official space 'host'. New York Post. 2010-09-26 [2010-10-17]. （原始内容存档于2012-09-04）（英语）.

arizona.edu

seds.lpl.arizona.edu

The Milky Way Galaxy. seds.lpl.arizona.edu@web.archive.org. [2013-05-19]. （原始内容存档于2010-04-05）.

phoenix.lpl.arizona.edu

Habitability and Biology: What are the Properties of Life?. Phoenix Mars Mission. The University of Arizona. [6 June 2013]. （原始内容存档于2013-10-02）. If any life exists on Mars today, scientists believe it is most likely to be in pockets of liquid water beneath the Martian surface.

lpl.arizona.edu

Showman, Adam P.; Malhotra, Renu. The Galilean Satellites (PDF). Science. 1999, 286 (5437): 77–84 [2021-11-15]. PMID 10506564. doi:10.1126/science.286.5437.77. （原始内容存档 (PDF)于2011-05-14）.

arxiv.org

Sharov, Alexei A.; Gordon, Richard. Life Before Earth (PDF). arXiv. 28 March 2013 [16 April 2013]. arXiv:1304.3381v1 . （原始内容存档 (PDF)于2013-07-05）.
Marcy, G.; Butler, R.; Fischer, D.; et al. Observed Properties of Exoplanets: Masses, Orbits and Metallicities. Progress of Theoretical Physics Supplement. 2005, 158: 24–42 [2017-12-11]. Bibcode:2005PThPS.158...24M. arXiv:astro-ph/0505003 . doi:10.1143/PTPS.158.24. （原始内容存档于2008-10-02）.
Greaves, Jane S.; et al. Phosphine gas in the cloud decks of Venus. Nature Astronomy. 14 September 2020, 5 (7): 655–664 [14 September 2020]. Bibcode:2020NatAs.tmp..178G. S2CID 221655755. arXiv:2009.06593 . doi:10.1038/s41550-020-1174-4. （原始内容存档于2020-09-14）.
Wesson, P. Panspermia, Past and Present: Astrophysical and Biophysical Conditions for the Dissemination of Life in Space. Sp. Sci.Rev. 1–4. 2010, 156 (1–4): 239–252. Bibcode:2010SSRv..156..239W. S2CID 119236576. arXiv:1011.0101 . doi:10.1007/s11214-010-9671-x.
von Bloh; Bounama; Cuntz; Franck. The Habitability of Super-Earths in Gliese 581. 2007. arXiv:0705.3758  [astro-ph]. cite arXiv模板填写了不支持的参数 (帮助)
John Billingham, et al.: Costs and Difficulties of Large-Scale 'Messaging', and the Need for International Debate on Potential Risks （页面存档备份，存于互联网档案馆）@arxiv.org; Active SETI （页面存档备份，存于互联网档案馆）@ en.wikipedia, abgerufen am 7. März 2011
Studie als Leitfaden für „ersten Kontakt“ （页面存档备份，存于互联网档案馆） orf.at, abgerufen am 20. August 2011;Aliens may strike humans to save the galaxy-study （页面存档备份，存于互联网档案馆） ibtimes.com; Seth D. Baum, et al.: Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis （页面存档备份，存于互联网档案馆） @arxiv, pdf, abgerufen am 20. August 2011
Baum, Seth; Haqq-Misra, Jacob; Domagal-Goldman, Shawn. "Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis" （页面存档备份，存于互联网档案馆）, Acta Astronautica, 2011, 68 (11-12):2014-2129, April 22, 2011, accessed August 18, 2011.

astrobio.net

Choi, Charles Q. The Chance for Life on Io. Astrobiology Magazine. 10 June 2010 [25 May 2013]. （原始内容存档于2014-01-16）.

bbc.co.uk

news.bbc.co.uk

Redfern, Martin (25 May 2004). "Venus clouds 'might harbour life'" （页面存档备份，存于互联网档案馆）. BBC News. Retrieved 30 December 2015.
Redfern, Martin. Venus clouds 'might harbour life'. BBC News. 2004-05-25 [2007-12-05]. （原始内容存档于2007-02-22）（英语）.
Planet hunters spy distant haul. BBC News. 2007-05-29 [2010-05-02]. （原始内容存档于2010-01-06）.
Willey, David. Vatican says aliens could exist. news.bbc.co.uk. 2008-05-13 [2010-01-04]. （原始内容存档于2010-07-26）（英语）.

bbc.co.uk

Kepler 22-b: Earth-like planet confirmed. BBC. 2011-12-05 [5 December 2011]. （原始内容存档于2019-08-27）.

bbc.com

Virk, Kameron. Tardigrades: 'Water bears' stuck on the moon after crash. BBC. 7 August 2019 [26 March 2021]. （原始内容存档于2022-03-01）.
Europa may be home to alien life （页面存档备份，存于互联网档案馆）. Melissa Hogenboom, BBC News. 26 March 2015.

berkeley.edu

setiathome.berkeley.edu

关于 SETI@home. University of California. [2012-09-08]. （原始内容存档于2012-09-09）（中文）.

boingboing.net

David Pescovitz. White House: no evidence of ETs yet (html). 2011-11-08 [2012-09-09]. （原始内容存档于2012-11-01）（英语）.

books.google.com

Mix, Lucas John. Life in space: astrobiology for everyone. Harvard University Press. 2009: 76 [2011-08-08]. ISBN 0-674-03321-3. （原始内容存档于2013-06-04）.
Scientific American, "Is The Moon Inhabited?". Munn & Company. 1878-07-20: 36 [2021-11-15]. （原始内容存档于2021-07-09）（英语）.

challzine.net

Dengrove, Richard. The Man Who Invented Extraterrestrials: Nicholas of Cusa. Challenger 29. Winter 2008 [2010-08-27]. （原始内容存档于2010-06-15）.

chinanews.com

哈佛学者称不存在外星人人类在宇宙很“孤独”. 2011-01-24 [2012-08-14]. （原始内容存档于2014-04-13）（中文）.

chinasona.org

Michel Desmarquet. 海奥华预言. Amazon. [2020-04-30]. （原始内容存档于2020-05-10）（英语）.
网红们所做的有关《海奥华预言》的视频节目. [2020-12-26]. （原始内容存档于2022-01-18）.

chinataiwan.org

big51.chinataiwan.org

中科院專家：相信外星人的存在. 台湾网. 2010-08-23 [2012-09-06] （中文）. ^{[永久失效連結]}

cnn.com

transcripts.cnn.com

CNN LARRY KING LIVE. transcripts.cnn.com. 2010-04-30 [2012-03-18]. （原始内容存档于2012-10-25）（英语）.

cntv.cn

news.cntv.cn

美国报告称温室气体排放可能将带来外星人攻击. 2011-08-23 [2013-05-20]. （原始内容存档于2016-03-04）（中文）.

cosmovisions.com

Schyrleus de Rheita. cosmovisions.com. [2011-04-29]. （原始内容存档于2011-07-08）（法语）.

cpst.net.cn

space.cpst.net.cn

谢懿. 寻找海盗号错过的火星秘密. 2008-11-14 [2012-09-11]. （原始内容存档于2012-07-18）（中文）.

crichton-official.com

Crichton, Michael. Aliens Cause Global Warming. crichton-official.com. 2003-01-17 [2012-10-18]. （原始内容存档于2006-01-01）.

crisismagazine.com

Wiker, Benjamin D. Christianity and the Search for Extraterrestrial Life. crisismagazine.com. [2013-06-16]. （原始内容存档于2003-02-10）.

csmonitor.com

Mike Wall, "NASA's Kepler Observatory to continue hunt for strange new worlds"^{[失效連結]}, "The Christian Science Monitor"

dailygalaxy.com

Did the Early Venus Harbor Life? (Weekend Feature). The Daily Galaxy. 2 June 2012 [22 May 2016]. （原始内容存档于28 October 2017）.

daviddarling.info

Drake Equation. daviddarling.info. [2010-02-01]. （原始内容存档于2010-08-18）.
J.B.S. Haldane. The Origins of Life. New Biology. 1954, 16: 12–27. cited in Darling, David. ammonia-based life. [2012-10-01]. （原始内容存档于2012-10-18）.

derstandard.at

Vorbereitungen für den Alien-Kontakt （页面存档备份，存于互联网档案馆） derstandard.at, 10. Januar 2011; Simon Conway Morris: Predicting what extra-terrestrials will be like: and preparing for the worst. Phil. Trans. R. Soc. A, 2011 369:555-571; doi:10.1098/rsta.2010.0276, online （页面存档备份，存于互联网档案馆） (PDF), abgerufen am 12. Januar 2011

discovermagazine.com

blogs.discovermagazine.com

Plait, Phil. Huge lakes of water may exist under Europa's ice. Discover. Bad Astronomy Blog. 17 November 2011 [2021-11-15]. （原始内容存档于2012-04-09）.

discovery.com

news.discovery.com

Top 10 Places To Find Alien Life : Discovery News. News.discovery.com. 8 June 2010 [13 June 2012]. （原始内容存档于2012-10-22）.
Klotz, Irene. MARS VIKING ROBOTS 'FOUND LIFE'. DiscoveryNews. 12 April 2012 [2012-04-16]. （原始内容存档于2013-01-26）（英语）.
Ray Villard, "Super-Civilizations Might Live Off Black Holes" （页面存档备份，存于互联网档案馆）, "Discovery News"
Villard, Ray. The Search for Extraterrestrial Civilizations Comes of Age. Discovery News. [2012-10-17]. （原始内容存档于2012-10-04）.

doi.org

Sharov, Alexei A. Genome increase as a clock for the origin and evolution of life. Biology Direct. 12 June 2006, 1: 1–17. PMC 1526419 . doi:10.1186/1745-6150-1-17.
Marcy, G.; Butler, R.; Fischer, D.; et al. Observed Properties of Exoplanets: Masses, Orbits and Metallicities. Progress of Theoretical Physics Supplement. 2005, 158: 24–42 [2017-12-11]. Bibcode:2005PThPS.158...24M. arXiv:astro-ph/0505003 . doi:10.1143/PTPS.158.24. （原始内容存档于2008-10-02）.
Pace, NR. The universal nature of biochemistry. (PDF). Proceedings of the National Academy of Sciences of the United States of America. 2001, 98 (3): 805–8 [2013-06-20]. Bibcode:2001PNAS...98..805P. PMC 33372 . PMID 11158550. doi:10.1073/pnas.98.3.805. （原始内容存档 (PDF)于2016-09-10）.
Summons, Roger E.; Amend, Jan P.; Bish, David; Buick, Roger; Cody, George D.; Des Marais, David J.; Dromart, Gilles; Eigenbrode, Jennifer L.; et al. Preservation of Martian Organic and Environmental Records: Final Report of the Mars Biosignature Working Group (PDF). Astrobiology. 2011, 11 (2): 157–81 [2021-11-15]. Bibcode:2011AsBio..11..157S. PMID 21417945. doi:10.1089/ast.2010.0506. hdl:1721.1/66519 . （原始内容存档 (PDF)于2021-11-11）. There is general consensus that extant microbial life on Mars would probably exist (if at all) in the subsurface and at low abundance.
Michalski, Joseph R.; Cuadros, Javier; Niles, Paul B.; Parnell, John; Deanne Rogers, A.; Wright, Shawn P. Groundwater activity on Mars and implications for a deep biosphere. Nature Geoscience. 2013, 6 (2): 133–8. Bibcode:2013NatGe...6..133M. doi:10.1038/ngeo1706.
Kargel, Jeffrey S.; Kaye, Jonathan Z.; Head, James W.; Marion, Giles M.; Sassen, Roger; et al. Europa's Crust and Ocean: Origin, Composition, and the Prospects for Life. Icarus. November 2000, 148 (1): 226–265 [2021-11-15]. Bibcode:2000Icar..148..226K. doi:10.1006/icar.2000.6471. （原始内容存档于2020-07-31）.
Thomson, William. The British Association Meeting at Edinburgh. Nature. August 1871, 4 (92): 261–278. Bibcode:1871Natur...4..261.. PMC 2070380 . doi:10.1038/004261a0. We must regard it as probably to the highest degree that there are countless seed-bearing meteoritic stones moving through space.
Demets, René. Darwin's Contribution to the Development of the Panspermia Theory. Astrobiology. October 2012, 12 (10): 946–950. Bibcode:2012AsBio..12..946D. PMID 23078643. doi:10.1089/ast.2011.0790.
Crick, F. H.; Orgel, L. E. Directed Panspermia. Icarus. 1973, 19 (3): 341–348. Bibcode:1973Icar...19..341C. doi:10.1016/0019-1035(73)90110-3.
Orgel, L. E.; Crick, F. H. Anticipating an RNA world. Some past speculations on the origin of life: Where are they today?. FASEB Journal. January 1993, 7 (1): 238–239 [2021-11-15]. PMID 7678564. S2CID 11314345. doi:10.1096/fasebj.7.1.7678564. （原始内容存档于2021-11-11）.
Roddriquez, J. Alexis P.; et al. The Chaotic Terrains of Mercury Reveal a History of Planetary Volatile Retention and Loss in the Innermost Solar System. Scientific Reports. 16 March 2020, 10 (4737): 4737. Bibcode:2020NatSR..10.4737R. PMC 7075900 . PMID 32179758. doi:10.1038/s41598-020-59885-5 .
Dartnell, Lewis R.; Nordheim, Tom Andre; Patel, Manish R.; Mason, Jonathon P.; et al. Constraints on a potential aerial biosphere on Venus: I. Cosmic rays. Icarus. September 2015, 257: 396–405. Bibcode:2015Icar..257..396D. doi:10.1016/j.icarus.2015.05.006.
Greaves, Jane S.; et al. Phosphine gas in the cloud decks of Venus. Nature Astronomy. 14 September 2020, 5 (7): 655–664 [14 September 2020]. Bibcode:2020NatAs.tmp..178G. S2CID 221655755. arXiv:2009.06593 . doi:10.1038/s41550-020-1174-4. （原始内容存档于2020-09-14）.
Livio, Mario. Winston Churchill's essay on alien life found. Nature. 15 February 2017, 542 (7641): 289–291. Bibcode:2017Natur.542..289L. PMID 28202987. S2CID 205092694. doi:10.1038/542289a .
Schulze-Makuch, Dirk; Crawford, Ian A. Was There an Early Habitability Window for Earth's Moon?. Astrobiology. 2018, 18 (8): 985–988. Bibcode:2018AsBio..18..985S. PMC 6225594 . PMID 30035616. doi:10.1089/ast.2018.1844.
Ojha, L.; Wilhelm, M. B.; Murchie, S. L.; McEwen, A. S.; Wray, J. J.; Hanley, J.; Massé, M.; Chojnacki, M. Spectral evidence for hydrated salts in recurring slope lineae on Mars. Nature Geoscience. 2015, 8 (11): 829–832. Bibcode:2015NatGe...8..829O. doi:10.1038/ngeo2546.
Grotzinger, John P. Introduction to Special Issue – Habitability, Taphonomy, and the Search for Organic Carbon on Mars. Science. 24 January 2014, 343 (6169): 386–387. Bibcode:2014Sci...343..386G. PMID 24458635. doi:10.1126/science.1249944 .
Grotzinger, J. P.; et al. A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars. Science. 24 January 2014, 343 (6169): 1242777. Bibcode:2014Sci...343A.386G. CiteSeerX 10.1.1.455.3973 . PMID 24324272. S2CID 52836398. doi:10.1126/science.1242777.
Küppers, M.; O'Rourke, L.; Bockelée-Morvan, D.; Zakharov, V.; Lee, S.; Von Allmen, P.; Carry, B.; Teyssier, D.; Marston, A.; Müller, T.; Crovisier, J.; Barucci, M. A.; Moreno, R. Localized sources of water vapour on the dwarf planet (1) Ceres. Nature. 23 January 2014, 505 (7484): 525–527. Bibcode:2014Natur.505..525K. ISSN 0028-0836. PMID 24451541. S2CID 4448395. doi:10.1038/nature12918.
Campins, H.; Comfort, C. M. Solar system: Evaporating asteroid. Nature. 23 January 2014, 505 (7484): 487–488. Bibcode:2014Natur.505..487C. PMID 24451536. S2CID 4396841. doi:10.1038/505487a .
Ponnamperuma, Cyril; Molton, Peter. The prospect of life on Jupiter. Space Life Sciences. January 1973, 4 (1): 32–44. Bibcode:1973SLSci...4...32P. PMID 4197410. S2CID 12491394. doi:10.1007/BF02626340.
Irwin, Louis Neal; Schulze-Makuch, Dirk. Assessing the Plausibility of Life on Other Worlds. Astrobiology. June 2001, 1 (2): 143–160. Bibcode:2001AsBio...1..143I. PMID 12467118. doi:10.1089/153110701753198918.
Vance, Steve; Bouffard, Mathieu; Choukroun, Mathieu; Sotina, Christophe. Ganymede's internal structure including thermodynamics of magnesium sulfate oceans in contact with ice. Planetary and Space Science. 12 April 2014, 96: 62–70. Bibcode:2014P&SS...96...62V. doi:10.1016/j.pss.2014.03.011.
Kuskov, O. L.; Kronrod, V. A. Internal structure of Europa and Callisto. Icarus. 2005, 177 (2): 550–569. Bibcode:2005Icar..177..550K. doi:10.1016/j.icarus.2005.04.014.
Showman, Adam P.; Malhotra, Renu. The Galilean Satellites (PDF). Science. 1999, 286 (5437): 77–84 [2021-11-15]. PMID 10506564. doi:10.1126/science.286.5437.77. （原始内容存档 (PDF)于2011-05-14）.
Coustenis, A.; et al. TandEM: Titan and Enceladus mission. Experimental Astronomy. March 2009, 23 (3): 893–946. Bibcode:2009ExA....23..893C. doi:10.1007/s10686-008-9103-z .
Lovett, Richard A. Enceladus named sweetest spot for alien life. Nature. 31 May 2011 [3 June 2011]. doi:10.1038/news.2011.337. （原始内容存档于2011-10-06）.
Czechowski, L. Enceladus as a place of origin of life in the Solar System. Geological Quarterly. 2018, 61 (1). doi:10.7306/gq.1401 .
Strobel, Darrell F. Molecular hydrogen in Titan's atmosphere: Implications of the measured tropospheric and thermospheric mole fractions. Icarus. 2010, 208 (2): 878–886. Bibcode:2010Icar..208..878S. doi:10.1016/j.icarus.2010.03.003.
McKay, C. P.; Smith, H. D. Possibilities for methanogenic life in liquid methane on the surface of Titan. Icarus. 2005, 178 (1): 274–276 [2021-11-15]. Bibcode:2005Icar..178..274M. doi:10.1016/j.icarus.2005.05.018. （原始内容存档于2021-03-09）.
Wesson, P. Panspermia, Past and Present: Astrophysical and Biophysical Conditions for the Dissemination of Life in Space. Sp. Sci.Rev. 1–4. 2010, 156 (1–4): 239–252. Bibcode:2010SSRv..156..239W. S2CID 119236576. arXiv:1011.0101 . doi:10.1007/s11214-010-9671-x.
Hussmann, Hauke; Sohl, Frank; Spohn, Tilman. Subsurface oceans and deep interiors of medium-sized outer planet satellites and large trans-neptunian objects. Icarus. November 2006, 185 (1): 258–273 [2021-11-15]. Bibcode:2006Icar..185..258H. doi:10.1016/j.icarus.2006.06.005. （原始内容存档 (PDF)于2015-08-31）.
Bianciardi, Giorgio; Miller, Joseph D.; Straat, Patricia Ann; Levin, Gilbert V. Complexity Analysis of the Viking Labeled Release Experiments. IJASS. March 2012, 13 (1): 14–26 [15 April 2012]. Bibcode:2012IJASS..13...14B. doi:10.5139/IJASS.2012.13.1.14. （原始内容存档于2012年4月15日）（英语）.
Freemann J. Dyson. Search for Artificial Stellar Sources of Infra-Red Radiation. Science. 1960, 131 (3414): 1667–1668 [2013-06-18]. PMID 17780673. doi:10.1126/science.131.3414.1667. （原始内容存档于2019-07-14）.

egu2012.eu

media.egu2012.eu

de Vera, J.-P.; Kohler, Ulrich. The adaptation potential of extremophiles to Martian surface conditions and its implication for the habitability of Mars (PDF). European Geosciences Union. 26 April 2012 [27 April 2012]. （原始内容 (PDF)存档于4 May 2012）.

esa.int

Was Venus once a habitable planet?. European Space Agency. 24 June 2010 [22 May 2016]. （原始内容存档于2018-12-05）.

exoplanet.eu

Der Interaktive Extrasolare Planeten Katalog. [2010-02-01]. （原始内容存档于2012-07-05）（德语）.
Schneider, Jean. Interactive Extra-solar Planets Catalog. 太阳系外行星百科. 10 September 2011 [2012-01-30]. （原始内容存档于2012-07-05）.

faqs.org

SETI: Search For Extra-Terrestrial Intelligence. [2012-10-21]. （原始内容存档于2012-05-14）（英语）.

foxnews.com

U.N. Denies Appointing 'First Contact' for Visiting Space Aliens. Fox News. 2010-09-27 [2012-11-03]. （原始内容存档于2013-05-22）.

guardian.co.uk

Sample, Ian. Nasa scientist claims evidence of extraterrestrial life. The Guardian (London). 2011-03-06 [2012-11-03]. （原始内容存档于2012-06-21）.
Matthew Weaver. UN plan for 'alien ambassador' a case of science fiction?. 2010-09-27 [2012-09-09]. （原始内容存档于2012-10-22）（英语）.

handle.net

hdl.handle.net

Summons, Roger E.; Amend, Jan P.; Bish, David; Buick, Roger; Cody, George D.; Des Marais, David J.; Dromart, Gilles; Eigenbrode, Jennifer L.; et al. Preservation of Martian Organic and Environmental Records: Final Report of the Mars Biosignature Working Group (PDF). Astrobiology. 2011, 11 (2): 157–81 [2021-11-15]. Bibcode:2011AsBio..11..157S. PMID 21417945. doi:10.1089/ast.2010.0506. hdl:1721.1/66519 . （原始内容存档 (PDF)于2021-11-11）. There is general consensus that extant microbial life on Mars would probably exist (if at all) in the subsurface and at low abundance.

harvard.edu

ui.adsabs.harvard.edu

Marcy, G.; Butler, R.; Fischer, D.; et al. Observed Properties of Exoplanets: Masses, Orbits and Metallicities. Progress of Theoretical Physics Supplement. 2005, 158: 24–42 [2017-12-11]. Bibcode:2005PThPS.158...24M. arXiv:astro-ph/0505003 . doi:10.1143/PTPS.158.24. （原始内容存档于2008-10-02）.
Pace, NR. The universal nature of biochemistry. (PDF). Proceedings of the National Academy of Sciences of the United States of America. 2001, 98 (3): 805–8 [2013-06-20]. Bibcode:2001PNAS...98..805P. PMC 33372 . PMID 11158550. doi:10.1073/pnas.98.3.805. （原始内容存档 (PDF)于2016-09-10）.
Summons, Roger E.; Amend, Jan P.; Bish, David; Buick, Roger; Cody, George D.; Des Marais, David J.; Dromart, Gilles; Eigenbrode, Jennifer L.; et al. Preservation of Martian Organic and Environmental Records: Final Report of the Mars Biosignature Working Group (PDF). Astrobiology. 2011, 11 (2): 157–81 [2021-11-15]. Bibcode:2011AsBio..11..157S. PMID 21417945. doi:10.1089/ast.2010.0506. hdl:1721.1/66519 . （原始内容存档 (PDF)于2021-11-11）. There is general consensus that extant microbial life on Mars would probably exist (if at all) in the subsurface and at low abundance.
Michalski, Joseph R.; Cuadros, Javier; Niles, Paul B.; Parnell, John; Deanne Rogers, A.; Wright, Shawn P. Groundwater activity on Mars and implications for a deep biosphere. Nature Geoscience. 2013, 6 (2): 133–8. Bibcode:2013NatGe...6..133M. doi:10.1038/ngeo1706.
Kargel, Jeffrey S.; Kaye, Jonathan Z.; Head, James W.; Marion, Giles M.; Sassen, Roger; et al. Europa's Crust and Ocean: Origin, Composition, and the Prospects for Life. Icarus. November 2000, 148 (1): 226–265 [2021-11-15]. Bibcode:2000Icar..148..226K. doi:10.1006/icar.2000.6471. （原始内容存档于2020-07-31）.
Thomson, William. The British Association Meeting at Edinburgh. Nature. August 1871, 4 (92): 261–278. Bibcode:1871Natur...4..261.. PMC 2070380 . doi:10.1038/004261a0. We must regard it as probably to the highest degree that there are countless seed-bearing meteoritic stones moving through space.
Demets, René. Darwin's Contribution to the Development of the Panspermia Theory. Astrobiology. October 2012, 12 (10): 946–950. Bibcode:2012AsBio..12..946D. PMID 23078643. doi:10.1089/ast.2011.0790.
Hoyle, Fred; Wickramasinghe, Chandra; Watson, John. Viruses from Space and Related Matters (PDF). University College Cardiff Press. 1986 [2021-11-15]. Bibcode:1986vfsr.book.....H. ISBN 978-0-906449-93-6. （原始内容 (PDF)存档于2016-10-18）.
Crick, F. H.; Orgel, L. E. Directed Panspermia. Icarus. 1973, 19 (3): 341–348. Bibcode:1973Icar...19..341C. doi:10.1016/0019-1035(73)90110-3.
Roddriquez, J. Alexis P.; et al. The Chaotic Terrains of Mercury Reveal a History of Planetary Volatile Retention and Loss in the Innermost Solar System. Scientific Reports. 16 March 2020, 10 (4737): 4737. Bibcode:2020NatSR..10.4737R. PMC 7075900 . PMID 32179758. doi:10.1038/s41598-020-59885-5 .
Dartnell, Lewis R.; Nordheim, Tom Andre; Patel, Manish R.; Mason, Jonathon P.; et al. Constraints on a potential aerial biosphere on Venus: I. Cosmic rays. Icarus. September 2015, 257: 396–405. Bibcode:2015Icar..257..396D. doi:10.1016/j.icarus.2015.05.006.
Greaves, Jane S.; et al. Phosphine gas in the cloud decks of Venus. Nature Astronomy. 14 September 2020, 5 (7): 655–664 [14 September 2020]. Bibcode:2020NatAs.tmp..178G. S2CID 221655755. arXiv:2009.06593 . doi:10.1038/s41550-020-1174-4. （原始内容存档于2020-09-14）.
Johnson, J. C.; Johnson, P. A.; Mardon, A. A. Prospecting Microbial Biosignatures from Venusian Clouds. LPI Contributions. November 2020, 2356 (2356): 8024 [2021-11-15]. Bibcode:2020LPICo2356.8024J. ISSN 0161-5297. （原始内容存档于2021-11-15）（英语）.
Livio, Mario. Winston Churchill's essay on alien life found. Nature. 15 February 2017, 542 (7641): 289–291. Bibcode:2017Natur.542..289L. PMID 28202987. S2CID 205092694. doi:10.1038/542289a .
Schulze-Makuch, Dirk; Crawford, Ian A. Was There an Early Habitability Window for Earth's Moon?. Astrobiology. 2018, 18 (8): 985–988. Bibcode:2018AsBio..18..985S. PMC 6225594 . PMID 30035616. doi:10.1089/ast.2018.1844.
Ojha, L.; Wilhelm, M. B.; Murchie, S. L.; McEwen, A. S.; Wray, J. J.; Hanley, J.; Massé, M.; Chojnacki, M. Spectral evidence for hydrated salts in recurring slope lineae on Mars. Nature Geoscience. 2015, 8 (11): 829–832. Bibcode:2015NatGe...8..829O. doi:10.1038/ngeo2546.
Grotzinger, John P. Introduction to Special Issue – Habitability, Taphonomy, and the Search for Organic Carbon on Mars. Science. 24 January 2014, 343 (6169): 386–387. Bibcode:2014Sci...343..386G. PMID 24458635. doi:10.1126/science.1249944 .
Grotzinger, J. P.; et al. A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars. Science. 24 January 2014, 343 (6169): 1242777. Bibcode:2014Sci...343A.386G. CiteSeerX 10.1.1.455.3973 . PMID 24324272. S2CID 52836398. doi:10.1126/science.1242777.
Küppers, M.; O'Rourke, L.; Bockelée-Morvan, D.; Zakharov, V.; Lee, S.; Von Allmen, P.; Carry, B.; Teyssier, D.; Marston, A.; Müller, T.; Crovisier, J.; Barucci, M. A.; Moreno, R. Localized sources of water vapour on the dwarf planet (1) Ceres. Nature. 23 January 2014, 505 (7484): 525–527. Bibcode:2014Natur.505..525K. ISSN 0028-0836. PMID 24451541. S2CID 4448395. doi:10.1038/nature12918.
Campins, H.; Comfort, C. M. Solar system: Evaporating asteroid. Nature. 23 January 2014, 505 (7484): 487–488. Bibcode:2014Natur.505..487C. PMID 24451536. S2CID 4396841. doi:10.1038/505487a .
Ponnamperuma, Cyril; Molton, Peter. The prospect of life on Jupiter. Space Life Sciences. January 1973, 4 (1): 32–44. Bibcode:1973SLSci...4...32P. PMID 4197410. S2CID 12491394. doi:10.1007/BF02626340.
Irwin, Louis Neal; Schulze-Makuch, Dirk. Assessing the Plausibility of Life on Other Worlds. Astrobiology. June 2001, 1 (2): 143–160. Bibcode:2001AsBio...1..143I. PMID 12467118. doi:10.1089/153110701753198918.
Vance, Steve; Bouffard, Mathieu; Choukroun, Mathieu; Sotina, Christophe. Ganymede's internal structure including thermodynamics of magnesium sulfate oceans in contact with ice. Planetary and Space Science. 12 April 2014, 96: 62–70. Bibcode:2014P&SS...96...62V. doi:10.1016/j.pss.2014.03.011.
Kuskov, O. L.; Kronrod, V. A. Internal structure of Europa and Callisto. Icarus. 2005, 177 (2): 550–569. Bibcode:2005Icar..177..550K. doi:10.1016/j.icarus.2005.04.014.
Coustenis, A.; et al. TandEM: Titan and Enceladus mission. Experimental Astronomy. March 2009, 23 (3): 893–946. Bibcode:2009ExA....23..893C. doi:10.1007/s10686-008-9103-z .
Strobel, Darrell F. Molecular hydrogen in Titan's atmosphere: Implications of the measured tropospheric and thermospheric mole fractions. Icarus. 2010, 208 (2): 878–886. Bibcode:2010Icar..208..878S. doi:10.1016/j.icarus.2010.03.003.
McKay, C. P.; Smith, H. D. Possibilities for methanogenic life in liquid methane on the surface of Titan. Icarus. 2005, 178 (1): 274–276 [2021-11-15]. Bibcode:2005Icar..178..274M. doi:10.1016/j.icarus.2005.05.018. （原始内容存档于2021-03-09）.
Wickramasinghe, Chandra. Viva Panspermia. The Observatory. June 2011. Bibcode:2011Obs...131..130W.
Wesson, P. Panspermia, Past and Present: Astrophysical and Biophysical Conditions for the Dissemination of Life in Space. Sp. Sci.Rev. 1–4. 2010, 156 (1–4): 239–252. Bibcode:2010SSRv..156..239W. S2CID 119236576. arXiv:1011.0101 . doi:10.1007/s11214-010-9671-x.
Hussmann, Hauke; Sohl, Frank; Spohn, Tilman. Subsurface oceans and deep interiors of medium-sized outer planet satellites and large trans-neptunian objects. Icarus. November 2006, 185 (1): 258–273 [2021-11-15]. Bibcode:2006Icar..185..258H. doi:10.1016/j.icarus.2006.06.005. （原始内容存档 (PDF)于2015-08-31）.
Bianciardi, Giorgio; Miller, Joseph D.; Straat, Patricia Ann; Levin, Gilbert V. Complexity Analysis of the Viking Labeled Release Experiments. IJASS. March 2012, 13 (1): 14–26 [15 April 2012]. Bibcode:2012IJASS..13...14B. doi:10.5139/IJASS.2012.13.1.14. （原始内容存档于2012年4月15日）（英语）.

dash.harvard.edu

Summons, Roger E.; Amend, Jan P.; Bish, David; Buick, Roger; Cody, George D.; Des Marais, David J.; Dromart, Gilles; Eigenbrode, Jennifer L.; et al. Preservation of Martian Organic and Environmental Records: Final Report of the Mars Biosignature Working Group (PDF). Astrobiology. 2011, 11 (2): 157–81 [2021-11-15]. Bibcode:2011AsBio..11..157S. PMID 21417945. doi:10.1089/ast.2010.0506. hdl:1721.1/66519 . （原始内容存档 (PDF)于2021-11-11）. There is general consensus that extant microbial life on Mars would probably exist (if at all) in the subsurface and at low abundance.

news.harvard.edu

Reuell, Peter. Harvard study suggests asteroids might play key role in spreading life. Harvard Gazette. 2019-07-08 [2019-09-29]. （原始内容存档于2020-04-25）（美国英语）.

cfa.harvard.edu

Could Life Exist Deep Underground on Mars?. Center for Astrophysics (Harvard & Smithsonian). [2021-01-28]. （原始内容存档于2021-01-28）.

adsabs.harvard.edu

Alexander Zaitsev, et al. Making a Case for METI- METI is risky （页面存档备份，存于互联网档案馆） setileague.org; Detection Probability of Terrestrial Radio Signals by a Hostile Super-civilization@Nasa ADS; Harald Zaun: SETI - die wissenschaftliche Suche nach außerirdischen Zivilisationen - Chancen, Perspektiven, Risiken. Heise, Hannover 2010, ISBN 978-3-936931-57-0, S.271ff; Aleksandr Leonidovich Zaitsev （页面存档备份，存于互联网档案馆） en.wikipedia.org, abgerufen am 7. März 2011

hoyle.org.uk

Hoyle, Fred; Wickramasinghe, Chandra; Watson, John. Viruses from Space and Related Matters (PDF). University College Cardiff Press. 1986 [2021-11-15]. Bibcode:1986vfsr.book.....H. ISBN 978-0-906449-93-6. （原始内容 (PDF)存档于2016-10-18）.

ibtimes.com

Studie als Leitfaden für „ersten Kontakt“ （页面存档备份，存于互联网档案馆） orf.at, abgerufen am 20. August 2011;Aliens may strike humans to save the galaxy-study （页面存档备份，存于互联网档案馆） ibtimes.com; Seth D. Baum, et al.: Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis （页面存档备份，存于互联网档案馆） @arxiv, pdf, abgerufen am 20. August 2011

ifeng.com

tech.ifeng.com

美科学家质疑霍金"外星人威胁论" 称它们很善良. 凤凰网. 2012-05-30 [2012-09-06]. （原始内容存档于2012-06-04）（中文）.

ijass.org

Bianciardi, Giorgio; Miller, Joseph D.; Straat, Patricia Ann; Levin, Gilbert V. Complexity Analysis of the Viking Labeled Release Experiments. IJASS. March 2012, 13 (1): 14–26 [15 April 2012]. Bibcode:2012IJASS..13...14B. doi:10.5139/IJASS.2012.13.1.14. （原始内容存档于2012年4月15日）（英语）.

ipap.jp

ptp.ipap.jp

Marcy, G.; Butler, R.; Fischer, D.; et al. Observed Properties of Exoplanets: Masses, Orbits and Metallicities. Progress of Theoretical Physics Supplement. 2005, 158: 24–42 [2017-12-11]. Bibcode:2005PThPS.158...24M. arXiv:astro-ph/0505003 . doi:10.1143/PTPS.158.24. （原始内容存档于2008-10-02）.

irishcentral.com

Irish astronomer says he has successfully tracked UFO’s. Irish Central. 2011-04-22 [2013-05-20]. （原始内容存档于2013-06-06）（英语）.

islandone.org

Freemann J. Dyson. Search for Artificial Stellar Sources of Infra-Red Radiation. Science. 1960, 131 (3414): 1667–1668 [2013-06-18]. PMID 17780673. doi:10.1126/science.131.3414.1667. （原始内容存档于2019-07-14）.

journalofcosmology.com

Hoover, Richard B. Fossils of Cyanobacteria in CI1 Carbonaceous Meteorites: Implications to Life on Comets, Europa, and Enceladus. Journal of Cosmology. 2011, 13: xxx [2011-03-06]. （原始内容存档于2011-03-08）.

lds.org

Doctrine and Covenants 76:23-24. [2013-06-13]. （原始内容存档于2013-05-10）.
Moses 1:33. [2013-06-13]. （原始内容存档于2013-06-02）.

ldsces.org

Neal A. Maxwell, Our Creator's Cosmos (PDF). [2013-06-13]. （原始内容存档 (PDF)于2013-05-15）.

msoe.edu

people.msoe.edu

Tritt, Charles S. Possibility of Life on Europa. Milwaukee School of Engineering. 2002 [10 August 2007]. （原始内容存档于9 June 2007）.

nasa.gov

Dyches, Preston; Chou, Felcia. The Solar System and Beyond is Awash in Water. NASA. 7 April 2015 [8 April 2015]. （原始内容存档于2015-04-10）.
Loff, Sarah. The Apollo Missions. nasa.gov. NASA. 1 February 2019 [26 March 2021]. （原始内容存档于2022-03-07）.
Smith, Kimberly; Anderson, James. NASA Searches for Life from the Moon in Recently Rediscovered Historic Footage. nasa.gov. NASA. 15 July 2019 [26 March 2021]. （原始内容存档于2021-10-14）.
NASA's Hubble Observations Suggest Underground Ocean on Jupiter's Largest Moon. NASA News. 12 March 2015 [15 March 2015]. （原始内容存档于2015-03-12）.
Jia-Rui Cook. Signs Changing Fast for Voyager at Solar System Edge. NASA. 2012-08-03 [2012-09-08]. （原始内容存档于2012-08-27）（英语）.
NASA Curiosity Rover Begins Eastbound Trek on Martian Surface. NASA. 2012-08-29 [2012-09-10]. （原始内容存档于2012-09-08）（英语）.

jpl.nasa.gov

Dyches, Preston; Brown, Dwayne. NASA Research Reveals Europa's Mystery Dark Material Could Be Sea Salt. NASA. 12 May 2015 [12 May 2015]. （原始内容存档于2015-05-15）.
Clavin, Whitney. Ganymede May Harbor 'Club Sandwich' of Oceans and Ice. NASA (Jet Propulsion Laboratory). 1 May 2014 [1 May 2014]. （原始内容存档于2020-01-31）.
Cook, Jia-Rui C. Clay-Like Minerals Found on Icy Crust of Europa. NASA. 11 December 2013 [11 December 2013]. （原始内容存档于2020-01-30）.
What is Consuming Hydrogen and Acetylene on Titan?. NASA/JPL. 2010 [6 June 2010]. （原始内容存档于29 June 2011）.
NASA's Kepler Confirms Its First Planet In Habitable Zone. NASA Press Release. 12/5/2011 [2013-06-18]. （原始内容存档于2012-01-14）. 请检查|date=中的日期值 (帮助)

imagine.gsfc.nasa.gov

How many galaxies are there?. imagine.gsfc.nasa.go. [2010-02-01]. （原始内容存档于2012-07-11）.

photojournal.jpl.nasa.gov

PIA01141: Geologic 'Face on Mars' Formation. NASA. 2 April 1998 [12 February 2011]. （原始内容存档于2021-10-03）.

nai.nasa.gov

Hays, Lindsay (编). NASA Astrobiology Strategy 2015 (PDF). NASA: 65. 2015 [12 October 2017]. （原始内容 (PDF)存档于22 December 2016）.

ntrs.nasa.gov

Orgel, L. E.; Crick, F. H. Anticipating an RNA world. Some past speculations on the origin of life: Where are they today?. FASEB Journal. January 1993, 7 (1): 238–239 [2021-11-15]. PMID 7678564. S2CID 11314345. doi:10.1096/fasebj.7.1.7678564. （原始内容存档于2021-11-11）.

solarsystem.nasa.gov

In Depth | Ceres. NASA Solar System Exploration. [2020-01-29]. （原始内容存档于2019-04-21）.

saturn.jpl.nasa.gov

Lakes on Titan, Full-Res: PIA08630. 24 July 2006. （原始内容存档于29 September 2006）.

kepler.nasa.gov

"Kepler: A Search for Habitable Planets" （页面存档备份，存于互联网档案馆）, "NASA Ames Research Center"

nature.com

Greaves, Jane S.; et al. Phosphine gas in the cloud decks of Venus. Nature Astronomy. 14 September 2020, 5 (7): 655–664 [14 September 2020]. Bibcode:2020NatAs.tmp..178G. S2CID 221655755. arXiv:2009.06593 . doi:10.1038/s41550-020-1174-4. （原始内容存档于2020-09-14）.
Lovett, Richard A. Enceladus named sweetest spot for alien life. Nature. 31 May 2011 [3 June 2011]. doi:10.1038/news.2011.337. （原始内容存档于2011-10-06）.

nbcnews.com

Boyle, Alan. Is There Life on Ceres? Dwarf Planet Spews Water Vapor. NBC. 22 January 2014 [10 February 2015]. （原始内容存档于2021-11-12）.

newscientist.com

John Pickrell. Top 10: Controversial pieces of evidence for extraterrestrial life. New Scientist. 4 September 2006 [2011-02-18]. （原始内容存档于2011-02-25）.
Clark, Stuart. Acidic clouds of Venus could harbour life. New Scientist. 26 September 2003 [30 December 2015]. （原始内容存档于2015-05-16）.
Wong, Sam. First moon plants sprout in China's Chang'e 4 biosphere experiment. New Scientist. 15 January 2019 [26 March 2021]. （原始内容存档于2022-03-12）.

newser.com

View all 26 comments Leave a comment. Scientists ID 'Habitable' Exoplanet - New model suggests Gliese 581D a likely candidate for life. Newser.com. 2011-05-18 [2012-06-13]. （原始内容存档于2012-05-12）.

nhao.jp

Project Dorothy. Nishi-Harima Astronomical Observatory. [2013-05-19]. （原始内容存档于2013-05-07）（英语）.

nicap.org

Edward J. Ruppelt. Chapter 1: Project Blue Book and the UFO Story, 1. Report On Unidentified Flying Objects. [2013-06-20]. （原始内容存档于2013-09-27）.

nih.gov

ncbi.nlm.nih.gov

Sharov, Alexei A. Genome increase as a clock for the origin and evolution of life. Biology Direct. 12 June 2006, 1: 1–17. PMC 1526419 . doi:10.1186/1745-6150-1-17.
Pace, NR. The universal nature of biochemistry. (PDF). Proceedings of the National Academy of Sciences of the United States of America. 2001, 98 (3): 805–8 [2013-06-20]. Bibcode:2001PNAS...98..805P. PMC 33372 . PMID 11158550. doi:10.1073/pnas.98.3.805. （原始内容存档 (PDF)于2016-09-10）.
Summons, Roger E.; Amend, Jan P.; Bish, David; Buick, Roger; Cody, George D.; Des Marais, David J.; Dromart, Gilles; Eigenbrode, Jennifer L.; et al. Preservation of Martian Organic and Environmental Records: Final Report of the Mars Biosignature Working Group (PDF). Astrobiology. 2011, 11 (2): 157–81 [2021-11-15]. Bibcode:2011AsBio..11..157S. PMID 21417945. doi:10.1089/ast.2010.0506. hdl:1721.1/66519 . （原始内容存档 (PDF)于2021-11-11）. There is general consensus that extant microbial life on Mars would probably exist (if at all) in the subsurface and at low abundance.
Thomson, William. The British Association Meeting at Edinburgh. Nature. August 1871, 4 (92): 261–278. Bibcode:1871Natur...4..261.. PMC 2070380 . doi:10.1038/004261a0. We must regard it as probably to the highest degree that there are countless seed-bearing meteoritic stones moving through space.
Demets, René. Darwin's Contribution to the Development of the Panspermia Theory. Astrobiology. October 2012, 12 (10): 946–950. Bibcode:2012AsBio..12..946D. PMID 23078643. doi:10.1089/ast.2011.0790.
Orgel, L. E.; Crick, F. H. Anticipating an RNA world. Some past speculations on the origin of life: Where are they today?. FASEB Journal. January 1993, 7 (1): 238–239 [2021-11-15]. PMID 7678564. S2CID 11314345. doi:10.1096/fasebj.7.1.7678564. （原始内容存档于2021-11-11）.
Roddriquez, J. Alexis P.; et al. The Chaotic Terrains of Mercury Reveal a History of Planetary Volatile Retention and Loss in the Innermost Solar System. Scientific Reports. 16 March 2020, 10 (4737): 4737. Bibcode:2020NatSR..10.4737R. PMC 7075900 . PMID 32179758. doi:10.1038/s41598-020-59885-5 .
Livio, Mario. Winston Churchill's essay on alien life found. Nature. 15 February 2017, 542 (7641): 289–291. Bibcode:2017Natur.542..289L. PMID 28202987. S2CID 205092694. doi:10.1038/542289a .
Schulze-Makuch, Dirk; Crawford, Ian A. Was There an Early Habitability Window for Earth's Moon?. Astrobiology. 2018, 18 (8): 985–988. Bibcode:2018AsBio..18..985S. PMC 6225594 . PMID 30035616. doi:10.1089/ast.2018.1844.
Grotzinger, John P. Introduction to Special Issue – Habitability, Taphonomy, and the Search for Organic Carbon on Mars. Science. 24 January 2014, 343 (6169): 386–387. Bibcode:2014Sci...343..386G. PMID 24458635. doi:10.1126/science.1249944 .
Grotzinger, J. P.; et al. A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars. Science. 24 January 2014, 343 (6169): 1242777. Bibcode:2014Sci...343A.386G. CiteSeerX 10.1.1.455.3973 . PMID 24324272. S2CID 52836398. doi:10.1126/science.1242777.
Küppers, M.; O'Rourke, L.; Bockelée-Morvan, D.; Zakharov, V.; Lee, S.; Von Allmen, P.; Carry, B.; Teyssier, D.; Marston, A.; Müller, T.; Crovisier, J.; Barucci, M. A.; Moreno, R. Localized sources of water vapour on the dwarf planet (1) Ceres. Nature. 23 January 2014, 505 (7484): 525–527. Bibcode:2014Natur.505..525K. ISSN 0028-0836. PMID 24451541. S2CID 4448395. doi:10.1038/nature12918.
Campins, H.; Comfort, C. M. Solar system: Evaporating asteroid. Nature. 23 January 2014, 505 (7484): 487–488. Bibcode:2014Natur.505..487C. PMID 24451536. S2CID 4396841. doi:10.1038/505487a .
Ponnamperuma, Cyril; Molton, Peter. The prospect of life on Jupiter. Space Life Sciences. January 1973, 4 (1): 32–44. Bibcode:1973SLSci...4...32P. PMID 4197410. S2CID 12491394. doi:10.1007/BF02626340.
Irwin, Louis Neal; Schulze-Makuch, Dirk. Assessing the Plausibility of Life on Other Worlds. Astrobiology. June 2001, 1 (2): 143–160. Bibcode:2001AsBio...1..143I. PMID 12467118. doi:10.1089/153110701753198918.
Showman, Adam P.; Malhotra, Renu. The Galilean Satellites (PDF). Science. 1999, 286 (5437): 77–84 [2021-11-15]. PMID 10506564. doi:10.1126/science.286.5437.77. （原始内容存档 (PDF)于2011-05-14）.
Freemann J. Dyson. Search for Artificial Stellar Sources of Infra-Red Radiation. Science. 1960, 131 (3414): 1667–1668 [2013-06-18]. PMID 17780673. doi:10.1126/science.131.3414.1667. （原始内容存档于2019-07-14）.

nsa.gov

Communication With Extraterrestrial Intelligence (PDF). NSA. [2021-08-18]. （原始内容存档 (PDF)于2021-07-09）. Sir Bernard Lovell, one of the world's leading radio astronomers, has calculated that, even allowing for a margin of error of 5000%, there must be in our own galaxy about 100 million stars which have planets of the right chemistry, dimensions, and temperature to support organic evolution.
UFO Documents Index. NSA. [2021-08-18]. （原始内容存档于2021-08-23）.
What Do NSA and NASA Have in Common?. NSA. [2021-08-18]. （原始内容存档于2021-08-13）.

nypost.com

Venezia, Todd. UN names official space 'host'. New York Post. 2010-09-26 [2010-10-17]. （原始内容存档于2012-09-04）（英语）.

nytimes.com

Hall, Shannon. Life on the Planet Mercury? 'It's Not Completely Nuts' - A new explanation for the rocky world's jumbled landscape opens a possibility that it could have had ingredients for habitability.. The New York Times. 24 March 2020 [26 March 2020]. （原始内容存档于2020-03-27）.
Stirone, Shannon; Chang, Kenneth; Overbye, Dennis. Life on Venus? Astronomers See a Signal in Its Clouds - The detection of a gas in the planet's atmosphere could turn scientists' gaze to a planet long overlooked in the search for extraterrestrial life.. The New York Times. 14 September 2020 [14 September 2020]. （原始内容存档于2020-09-14）.
Chang, Kenneth. On Mars, an Ancient Lake and Perhaps Life. The New York Times. 9 December 2013 [9 December 2013]. （原始内容存档于2013-12-09）.
Chang, Kenneth. Suddenly, It Seems, Water Is Everywhere in Solar System. The New York Times. 12 March 2015 [12 March 2015]. （原始内容存档于2018-07-11）.

ohr.edu

Star Struck, a letter to a Rabbi. ohr.edu. [2011-04-29]. （原始内容存档于2011-06-04）.

orf.at

Studie als Leitfaden für „ersten Kontakt“ （页面存档备份，存于互联网档案馆） orf.at, abgerufen am 20. August 2011;Aliens may strike humans to save the galaxy-study （页面存档备份，存于互联网档案馆） ibtimes.com; Seth D. Baum, et al.: Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis （页面存档备份，存于互联网档案馆） @arxiv, pdf, abgerufen am 20. August 2011

padrefunes.blogspot.com

The extraterrestrial is my brother (罗马观察报采访全文的英文翻译). 2008-05-23 [2013-05-22]. （原始内容存档于2014-06-02）（英语）.

phys.org

Warnung von Astrophysiker Hawking （页面存档备份，存于互联网档案馆） Spiegel online, 25. April 2010; Is calling E.T. a smart move? （页面存档备份，存于互联网档案馆） physorg.com, 29. Jänner 2010, abgerufen am 7. März 2011

planetary.org

Alexander, Amir. The Search for Extraterrestrial Intelligence: A Short History — Part 7: The Birth of the Drake Equation. [2013-06-17]. （原始内容存档于2012-03-04）.
Our Founders. Planetary Socity. [2013-06-21]. （原始内容存档于2013-05-28）（中文）.

pnas.org

Pace, NR. The universal nature of biochemistry. (PDF). Proceedings of the National Academy of Sciences of the United States of America. 2001, 98 (3): 805–8 [2013-06-20]. Bibcode:2001PNAS...98..805P. PMC 33372 . PMID 11158550. doi:10.1073/pnas.98.3.805. （原始内容存档 (PDF)于2016-09-10）.

positiveatheism.org

Giordano Bruno. Introductory Epistle: Argument of the Third Dialogue. On the Infinite Universe and Worlds (De l'Infinito Universo et Mondi). [2011-04-29]. （原始内容存档于2014-10-13）（英语）.

presidentialufo.com

Presidential UFO.com （页面存档备份，存于互联网档案馆） Roswell Proof.com （页面存档备份，存于互联网档案馆）

psu.edu

citeseerx.ist.psu.edu

Grotzinger, J. P.; et al. A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars. Science. 24 January 2014, 343 (6169): 1242777. Bibcode:2014Sci...343A.386G. CiteSeerX 10.1.1.455.3973 . PMID 24324272. S2CID 52836398. doi:10.1126/science.1242777.

researchgate.net

Hussmann, Hauke; Sohl, Frank; Spohn, Tilman. Subsurface oceans and deep interiors of medium-sized outer planet satellites and large trans-neptunian objects. Icarus. November 2006, 185 (1): 258–273 [2021-11-15]. Bibcode:2006Icar..185..258H. doi:10.1016/j.icarus.2006.06.005. （原始内容存档 (PDF)于2015-08-31）.

roswellproof.com

Presidential UFO.com （页面存档备份，存于互联网档案馆） Roswell Proof.com （页面存档备份，存于互联网档案馆）

royalsocietypublishing.org

rsta.royalsocietypublishing.org

Vorbereitungen für den Alien-Kontakt （页面存档备份，存于互联网档案馆） derstandard.at, 10. Januar 2011; Simon Conway Morris: Predicting what extra-terrestrials will be like: and preparing for the worst. Phil. Trans. R. Soc. A, 2011 369:555-571; doi:10.1098/rsta.2010.0276, online （页面存档备份，存于互联网档案馆） (PDF), abgerufen am 12. Januar 2011

sciencemag.org

Early Archaean Microorganisms Preferred Elemental Sulfur, Not Sulfate （页面存档备份，存于互联网档案馆） Science AAAS, by Philippot, et al., (14 September 2007)
Science – Special Collection – Curiosity Rover on Mars. Science. 9 December 2013 [9 December 2013]. （原始内容存档于2014-01-28）.
Special Issue – Table of Contents – Exploring Martian Habitability. Science. 24 January 2014, 343 (6169): 345–452 [24 January 2014]. （原始内容存档于2014-01-29）.
Special Collection – Curiosity – Exploring Martian Habitability. Science. 24 January 2014 [24 January 2014]. （原始内容存档于2014-01-28）.

sciencenet.cn

news.sciencenet.cn

墨西哥展出“外星人”，或成为首个承认外星生物的国家—新闻—科学网. news.sciencenet.cn. 2021-11-20 [2023-09-14]. （原始内容存档于2023-11-10）（中文）.
金星. 人类和外星人该握手吗. 中国科学报. 2012-01-21 [2012-09-06]. （原始内容存档于2012-01-24）（中文）.

semanticscholar.org

api.semanticscholar.org

Orgel, L. E.; Crick, F. H. Anticipating an RNA world. Some past speculations on the origin of life: Where are they today?. FASEB Journal. January 1993, 7 (1): 238–239 [2021-11-15]. PMID 7678564. S2CID 11314345. doi:10.1096/fasebj.7.1.7678564. （原始内容存档于2021-11-11）.
Greaves, Jane S.; et al. Phosphine gas in the cloud decks of Venus. Nature Astronomy. 14 September 2020, 5 (7): 655–664 [14 September 2020]. Bibcode:2020NatAs.tmp..178G. S2CID 221655755. arXiv:2009.06593 . doi:10.1038/s41550-020-1174-4. （原始内容存档于2020-09-14）.
Livio, Mario. Winston Churchill's essay on alien life found. Nature. 15 February 2017, 542 (7641): 289–291. Bibcode:2017Natur.542..289L. PMID 28202987. S2CID 205092694. doi:10.1038/542289a .
Grotzinger, J. P.; et al. A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars. Science. 24 January 2014, 343 (6169): 1242777. Bibcode:2014Sci...343A.386G. CiteSeerX 10.1.1.455.3973 . PMID 24324272. S2CID 52836398. doi:10.1126/science.1242777.
Küppers, M.; O'Rourke, L.; Bockelée-Morvan, D.; Zakharov, V.; Lee, S.; Von Allmen, P.; Carry, B.; Teyssier, D.; Marston, A.; Müller, T.; Crovisier, J.; Barucci, M. A.; Moreno, R. Localized sources of water vapour on the dwarf planet (1) Ceres. Nature. 23 January 2014, 505 (7484): 525–527. Bibcode:2014Natur.505..525K. ISSN 0028-0836. PMID 24451541. S2CID 4448395. doi:10.1038/nature12918.
Campins, H.; Comfort, C. M. Solar system: Evaporating asteroid. Nature. 23 January 2014, 505 (7484): 487–488. Bibcode:2014Natur.505..487C. PMID 24451536. S2CID 4396841. doi:10.1038/505487a .
Ponnamperuma, Cyril; Molton, Peter. The prospect of life on Jupiter. Space Life Sciences. January 1973, 4 (1): 32–44. Bibcode:1973SLSci...4...32P. PMID 4197410. S2CID 12491394. doi:10.1007/BF02626340.
Wesson, P. Panspermia, Past and Present: Astrophysical and Biophysical Conditions for the Dissemination of Life in Space. Sp. Sci.Rev. 1–4. 2010, 156 (1–4): 239–252. Bibcode:2010SSRv..156..239W. S2CID 119236576. arXiv:1011.0101 . doi:10.1007/s11214-010-9671-x.

seti.org

Project Ozma - The first SETI search. SETI.org. [2013-05-19]. （原始内容存档于2013-08-29）（英语）.

setileague.org

Alexander Zaitsev, et al. Making a Case for METI- METI is risky （页面存档备份，存于互联网档案馆） setileague.org; Detection Probability of Terrestrial Radio Signals by a Hostile Super-civilization@Nasa ADS; Harald Zaun: SETI - die wissenschaftliche Suche nach außerirdischen Zivilisationen - Chancen, Perspektiven, Risiken. Heise, Hannover 2010, ISBN 978-3-936931-57-0, S.271ff; Aleksandr Leonidovich Zaitsev （页面存档备份，存于互联网档案馆） en.wikipedia.org, abgerufen am 7. März 2011

sina.com.cn

tech.sina.com.cn

北京天文馆馆长：外星人从未现身地球人已暴露. 2010-04-27 [2012-08-13]. （原始内容存档于2013-06-16）.
新研究称海盗号30年前已发现火星有机物. 新浪科技. 2011-01-11 [2012-09-11]. （原始内容存档于2013-06-16）（中文）.

skymania.com

Baldwin, Emily. Lichen survives harsh Mars environment. Skymania News. 26 April 2012 [27 April 2012]. （原始内容存档于2012-05-28）.

sohu.com

it.sohu.com

NASA最新宣称：1235颗行星可能存在外星生命. 搜狐科学. 2011-03-31 [2012-09-07]. （原始内容存档于2013-06-15）（中文）.

space.com

Redd, Nola Taylor. How Hot is Venus?. Space.com. 2012-11-17 [2020-01-28]. （原始内容存档于2022-02-10）（英语）.
Bortman, Henry. Was Venus Alive? 'The Signs are Probably There'. Space.com. 26 August 2004 [22 May 2016]. （原始内容存档于2016-03-04）.
Wall, Mike. NASA hopes to launch ambitious mission to icy Jupiter moon. Space.com. 5 March 2014 [15 April 2014]. （原始内容存档于2018-09-08）.
Than, Ker. Scientists Reconsider Habitability of Saturn's Moon. Space.com. 13 September 2005 [2021-11-15]. （原始内容存档于2021-11-12）.
Britt, Robert Roy. Lakes Found on Saturn's Moon Titan. Space.com. 28 July 2006 [2021-11-15]. （原始内容存档于2021-11-12）.

spaceflightnow.com

Clark, Stephen. Economics, water plumes to drive Europa mission study. Spaceflight Now. 14 March 2014 [15 April 2014]. （原始内容存档于2014-04-16）.

spiegel.de

Warnung von Astrophysiker Hawking. spiegel.de. 2010-04-25 [2013-06-19]. （原始内容存档于2013-06-09）（德语）.
Warnung von Astrophysiker Hawking （页面存档备份，存于互联网档案馆） Spiegel online, 25. April 2010; Is calling E.T. a smart move? （页面存档备份，存于互联网档案馆） physorg.com, 29. Jänner 2010, abgerufen am 7. März 2011

stanford.edu

solar-center.stanford.edu

Who discovered that the Sun was a Star?. Stanford Solar Center. [2012-08-15]. （原始内容存档于2017-07-10）.

telegraph.co.uk

Scientists predict life on many more planets. The Telegraph. 2012-09-11 [2012-09-12]. （原始内容存档于2012-09-13）（英语）.

the-scientist.com

Offord, Catherine. Life Thrives Within the Earth's Crust. The Scientist Magazine. 30 September 2018 [2019-04-02]. （原始内容存档于2022-01-20）（英语）.
Wilke, Carolyn. Life Deep Underground Is Twice the Volume of the Oceans: Study. The Scientist Magazine. 11 December 2018 [2019-04-02]. （原始内容存档于2021-11-10）（英语）.

torah.org

Kaplan, Rabbi Aryeh. Extraterrestrial life. torah.org. [2011年4月29日]. （原始内容存档于2010年12月3日）.

universetoday.com

How Many Stars are in the Milky Way?. universetoday.com. [2013-06-19]. （原始内容存档于2014-02-03）.
Atkinson, Nancy. Was Venus once a waterworld?. Universe Today. 24 June 2010 [22 May 2016]. （原始内容存档于2019-03-28）.
O'Neill, Ian. Life on Ceres: Could the Dwarf Planet be the Root of Panspermia. Universe Today. 5 March 2009 [30 January 2012]. （原始内容存档于2011-07-09）.
Atkinson, Nancy. Europa Capable of Supporting Life, Scientist Says. Universe Today. 2009 [18 August 2011]. （原始内容存档于2010-05-28）.

usatoday.com

usatoday30.usatoday.com

Than, Ker. Hopes dim for life on distant planet. USA Today. 2007-06-18 [2010-05-02]. （原始内容存档于2015-06-17）.

utep.edu

geo.utep.edu

Schulze-Makuch, Dirk; Irwin, Louis N. Alternative Energy Sources Could Support Life on Europa (PDF). Departments of Geological and Biological Sciences, University of Texas at El Paso. 2001 [21 December 2007]. （原始内容 (PDF)存档于3 July 2006）.

utexas.edu

jsg.utexas.edu

Scientists Find Evidence for "Great Lake" on Europa and Potential New Habitat for Life. The University of Texas at Austin. 16 November 2011 [2021-11-15]. （原始内容存档于2013-12-18）.

uvic.ca

orca.phys.uvic.ca

Hsiao, Eric. Possibility of Life on Europa (PDF). University of Victoria. 2004 [2021-11-15]. （原始内容 (PDF)存档于2014-01-11）.

vatican.va

L'extraterrestre è mio fratello. L'Osservatore Romano. 2008-05-14 [2013-05-22]. （原始内容存档于2012-10-21）（意大利语）.

war-of-the-worlds.org

Radio Listeners in Panic, Taking War Drama as Fact. New York Times. 1938-10-31 [2013-06-20]. （原始内容 (reprint)存档于2013-06-29）.

washingtonpost.com

Kaufman, Marc. The religious questions raised by aliens. The Washington Post. 2009-11-08 [2010-05-02]. （原始内容存档于2010-01-06）.

web.archive.org

北京天文馆馆长：外星人从未现身地球人已暴露. 2010-04-27 [2012-08-13]. （原始内容存档于2013-06-16）.
哈佛学者称不存在外星人人类在宇宙很“孤独”. 2011-01-24 [2012-08-14]. （原始内容存档于2014-04-13）（中文）.
霍金为何警告最好别惹外星人？. 2010-05-17 [2012-08-13]. （原始内容存档于2013-06-15）.
一半欧美人相信外星人存在. 2011-01-12 [2012-08-14]. （原始内容存档于2011-09-11）（中文）.
Communication With Extraterrestrial Intelligence (PDF). NSA. [2021-08-18]. （原始内容存档 (PDF)于2021-07-09）. Sir Bernard Lovell, one of the world's leading radio astronomers, has calculated that, even allowing for a margin of error of 5000%, there must be in our own galaxy about 100 million stars which have planets of the right chemistry, dimensions, and temperature to support organic evolution.
UFO Documents Index. NSA. [2021-08-18]. （原始内容存档于2021-08-23）.
What Do NSA and NASA Have in Common?. NSA. [2021-08-18]. （原始内容存档于2021-08-13）.
John Pickrell. Top 10: Controversial pieces of evidence for extraterrestrial life. New Scientist. 4 September 2006 [2011-02-18]. （原始内容存档于2011-02-25）.
Sharov, Alexei A.; Gordon, Richard. Life Before Earth (PDF). arXiv. 28 March 2013 [16 April 2013]. arXiv:1304.3381v1 . （原始内容存档 (PDF)于2013-07-05）.
The Milky Way Galaxy. seds.lpl.arizona.edu@web.archive.org. [2013-05-19]. （原始内容存档于2010-04-05）.
Marcy, G.; Butler, R.; Fischer, D.; et al. Observed Properties of Exoplanets: Masses, Orbits and Metallicities. Progress of Theoretical Physics Supplement. 2005, 158: 24–42 [2017-12-11]. Bibcode:2005PThPS.158...24M. arXiv:astro-ph/0505003 . doi:10.1143/PTPS.158.24. （原始内容存档于2008-10-02）.
Der Interaktive Extrasolare Planeten Katalog. [2010-02-01]. （原始内容存档于2012-07-05）（德语）.
Drake Equation. daviddarling.info. [2010-02-01]. （原始内容存档于2010-08-18）.
Alexander, Amir. The Search for Extraterrestrial Intelligence: A Short History — Part 7: The Birth of the Drake Equation. [2013-06-17]. （原始内容存档于2012-03-04）.
Scientists predict life on many more planets. The Telegraph. 2012-09-11 [2012-09-12]. （原始内容存档于2012-09-13）（英语）.
Mix, Lucas John. Life in space: astrobiology for everyone. Harvard University Press. 2009: 76 [2011-08-08]. ISBN 0-674-03321-3. （原始内容存档于2013-06-04）.
Pace, NR. The universal nature of biochemistry. (PDF). Proceedings of the National Academy of Sciences of the United States of America. 2001, 98 (3): 805–8 [2013-06-20]. Bibcode:2001PNAS...98..805P. PMC 33372 . PMID 11158550. doi:10.1073/pnas.98.3.805. （原始内容存档 (PDF)于2016-09-10）.
Early Archaean Microorganisms Preferred Elemental Sulfur, Not Sulfate （页面存档备份，存于互联网档案馆） Science AAAS, by Philippot, et al., (14 September 2007)
J.B.S. Haldane. The Origins of Life. New Biology. 1954, 16: 12–27. cited in Darling, David. ammonia-based life. [2012-10-01]. （原始内容存档于2012-10-18）.
PIA01141: Geologic 'Face on Mars' Formation. NASA. 2 April 1998 [12 February 2011]. （原始内容存档于2021-10-03）.
Dyches, Preston; Chou, Felcia. The Solar System and Beyond is Awash in Water. NASA. 7 April 2015 [8 April 2015]. （原始内容存档于2015-04-10）.
Hays, Lindsay (编). NASA Astrobiology Strategy 2015 (PDF). NASA: 65. 2015 [12 October 2017]. （原始内容 (PDF)存档于22 December 2016）.
Offord, Catherine. Life Thrives Within the Earth's Crust. The Scientist Magazine. 30 September 2018 [2019-04-02]. （原始内容存档于2022-01-20）（英语）.
Wilke, Carolyn. Life Deep Underground Is Twice the Volume of the Oceans: Study. The Scientist Magazine. 11 December 2018 [2019-04-02]. （原始内容存档于2021-11-10）（英语）.
Summons, Roger E.; Amend, Jan P.; Bish, David; Buick, Roger; Cody, George D.; Des Marais, David J.; Dromart, Gilles; Eigenbrode, Jennifer L.; et al. Preservation of Martian Organic and Environmental Records: Final Report of the Mars Biosignature Working Group (PDF). Astrobiology. 2011, 11 (2): 157–81 [2021-11-15]. Bibcode:2011AsBio..11..157S. PMID 21417945. doi:10.1089/ast.2010.0506. hdl:1721.1/66519 . （原始内容存档 (PDF)于2021-11-11）. There is general consensus that extant microbial life on Mars would probably exist (if at all) in the subsurface and at low abundance.
Habitability and Biology: What are the Properties of Life?. Phoenix Mars Mission. The University of Arizona. [6 June 2013]. （原始内容存档于2013-10-02）. If any life exists on Mars today, scientists believe it is most likely to be in pockets of liquid water beneath the Martian surface.
Tritt, Charles S. Possibility of Life on Europa. Milwaukee School of Engineering. 2002 [10 August 2007]. （原始内容存档于9 June 2007）.
Kargel, Jeffrey S.; Kaye, Jonathan Z.; Head, James W.; Marion, Giles M.; Sassen, Roger; et al. Europa's Crust and Ocean: Origin, Composition, and the Prospects for Life. Icarus. November 2000, 148 (1): 226–265 [2021-11-15]. Bibcode:2000Icar..148..226K. doi:10.1006/icar.2000.6471. （原始内容存档于2020-07-31）.
Schulze-Makuch, Dirk; Irwin, Louis N. Alternative Energy Sources Could Support Life on Europa (PDF). Departments of Geological and Biological Sciences, University of Texas at El Paso. 2001 [21 December 2007]. （原始内容 (PDF)存档于3 July 2006）.
Reuell, Peter. Harvard study suggests asteroids might play key role in spreading life. Harvard Gazette. 2019-07-08 [2019-09-29]. （原始内容存档于2020-04-25）（美国英语）.
Hoyle, Fred; Wickramasinghe, Chandra; Watson, John. Viruses from Space and Related Matters (PDF). University College Cardiff Press. 1986 [2021-11-15]. Bibcode:1986vfsr.book.....H. ISBN 978-0-906449-93-6. （原始内容 (PDF)存档于2016-10-18）.
Orgel, L. E.; Crick, F. H. Anticipating an RNA world. Some past speculations on the origin of life: Where are they today?. FASEB Journal. January 1993, 7 (1): 238–239 [2021-11-15]. PMID 7678564. S2CID 11314345. doi:10.1096/fasebj.7.1.7678564. （原始内容存档于2021-11-11）.
Hall, Shannon. Life on the Planet Mercury? 'It's Not Completely Nuts' - A new explanation for the rocky world's jumbled landscape opens a possibility that it could have had ingredients for habitability.. The New York Times. 24 March 2020 [26 March 2020]. （原始内容存档于2020-03-27）.
Redd, Nola Taylor. How Hot is Venus?. Space.com. 2012-11-17 [2020-01-28]. （原始内容存档于2022-02-10）（英语）.
Clark, Stuart. Acidic clouds of Venus could harbour life. New Scientist. 26 September 2003 [30 December 2015]. （原始内容存档于2015-05-16）.
Redfern, Martin (25 May 2004). "Venus clouds 'might harbour life'" （页面存档备份，存于互联网档案馆）. BBC News. Retrieved 30 December 2015.
Did the Early Venus Harbor Life? (Weekend Feature). The Daily Galaxy. 2 June 2012 [22 May 2016]. （原始内容存档于28 October 2017）.
Was Venus once a habitable planet?. European Space Agency. 24 June 2010 [22 May 2016]. （原始内容存档于2018-12-05）.
Atkinson, Nancy. Was Venus once a waterworld?. Universe Today. 24 June 2010 [22 May 2016]. （原始内容存档于2019-03-28）.
Greaves, Jane S.; et al. Phosphine gas in the cloud decks of Venus. Nature Astronomy. 14 September 2020, 5 (7): 655–664 [14 September 2020]. Bibcode:2020NatAs.tmp..178G. S2CID 221655755. arXiv:2009.06593 . doi:10.1038/s41550-020-1174-4. （原始内容存档于2020-09-14）.
Stirone, Shannon; Chang, Kenneth; Overbye, Dennis. Life on Venus? Astronomers See a Signal in Its Clouds - The detection of a gas in the planet's atmosphere could turn scientists' gaze to a planet long overlooked in the search for extraterrestrial life.. The New York Times. 14 September 2020 [14 September 2020]. （原始内容存档于2020-09-14）.
Johnson, J. C.; Johnson, P. A.; Mardon, A. A. Prospecting Microbial Biosignatures from Venusian Clouds. LPI Contributions. November 2020, 2356 (2356): 8024 [2021-11-15]. Bibcode:2020LPICo2356.8024J. ISSN 0161-5297. （原始内容存档于2021-11-15）（英语）.
Scientific American, "Is The Moon Inhabited?". Munn & Company. 1878-07-20: 36 [2021-11-15]. （原始内容存档于2021-07-09）（英语）.
Mysteries from the moon's past. Washington State University. 23 July 2018 [22 August 2020]. （原始内容存档于2021-09-07）.
Could Life Exist Deep Underground on Mars?. Center for Astrophysics (Harvard & Smithsonian). [2021-01-28]. （原始内容存档于2021-01-28）.
Loff, Sarah. The Apollo Missions. nasa.gov. NASA. 1 February 2019 [26 March 2021]. （原始内容存档于2022-03-07）.
Wong, Sam. First moon plants sprout in China's Chang'e 4 biosphere experiment. New Scientist. 15 January 2019 [26 March 2021]. （原始内容存档于2022-03-12）.
Virk, Kameron. Tardigrades: 'Water bears' stuck on the moon after crash. BBC. 7 August 2019 [26 March 2021]. （原始内容存档于2022-03-01）.
Smith, Kimberly; Anderson, James. NASA Searches for Life from the Moon in Recently Rediscovered Historic Footage. nasa.gov. NASA. 15 July 2019 [26 March 2021]. （原始内容存档于2021-10-14）.
Top 10 Places To Find Alien Life : Discovery News. News.discovery.com. 8 June 2010 [13 June 2012]. （原始内容存档于2012-10-22）.
Baldwin, Emily. Lichen survives harsh Mars environment. Skymania News. 26 April 2012 [27 April 2012]. （原始内容存档于2012-05-28）.
de Vera, J.-P.; Kohler, Ulrich. The adaptation potential of extremophiles to Martian surface conditions and its implication for the habitability of Mars (PDF). European Geosciences Union. 26 April 2012 [27 April 2012]. （原始内容 (PDF)存档于4 May 2012）.
Chang, Kenneth. On Mars, an Ancient Lake and Perhaps Life. The New York Times. 9 December 2013 [9 December 2013]. （原始内容存档于2013-12-09）.
Science – Special Collection – Curiosity Rover on Mars. Science. 9 December 2013 [9 December 2013]. （原始内容存档于2014-01-28）.
Special Issue – Table of Contents – Exploring Martian Habitability. Science. 24 January 2014, 343 (6169): 345–452 [24 January 2014]. （原始内容存档于2014-01-29）.
Special Collection – Curiosity – Exploring Martian Habitability. Science. 24 January 2014 [24 January 2014]. （原始内容存档于2014-01-28）.
In Depth | Ceres. NASA Solar System Exploration. [2020-01-29]. （原始内容存档于2019-04-21）.
O'Neill, Ian. Life on Ceres: Could the Dwarf Planet be the Root of Panspermia. Universe Today. 5 March 2009 [30 January 2012]. （原始内容存档于2011-07-09）.
Boyle, Alan. Is There Life on Ceres? Dwarf Planet Spews Water Vapor. NBC. 22 January 2014 [10 February 2015]. （原始内容存档于2021-11-12）.
Dyches, Preston; Brown, Dwayne. NASA Research Reveals Europa's Mystery Dark Material Could Be Sea Salt. NASA. 12 May 2015 [12 May 2015]. （原始内容存档于2015-05-15）.
NASA's Hubble Observations Suggest Underground Ocean on Jupiter's Largest Moon. NASA News. 12 March 2015 [15 March 2015]. （原始内容存档于2015-03-12）.
Clavin, Whitney. Ganymede May Harbor 'Club Sandwich' of Oceans and Ice. NASA (Jet Propulsion Laboratory). 1 May 2014 [1 May 2014]. （原始内容存档于2020-01-31）.
Video (00:51) – Jupiter's 'Club Sandwich' Moon. NASA. 1 May 2014 [2 May 2014]. （原始内容存档于2019-11-09）.
Chang, Kenneth. Suddenly, It Seems, Water Is Everywhere in Solar System. The New York Times. 12 March 2015 [12 March 2015]. （原始内容存档于2018-07-11）.
Showman, Adam P.; Malhotra, Renu. The Galilean Satellites (PDF). Science. 1999, 286 (5437): 77–84 [2021-11-15]. PMID 10506564. doi:10.1126/science.286.5437.77. （原始内容存档 (PDF)于2011-05-14）.
Hsiao, Eric. Possibility of Life on Europa (PDF). University of Victoria. 2004 [2021-11-15]. （原始内容 (PDF)存档于2014-01-11）.
Europa may be home to alien life （页面存档备份，存于互联网档案馆）. Melissa Hogenboom, BBC News. 26 March 2015.
Atkinson, Nancy. Europa Capable of Supporting Life, Scientist Says. Universe Today. 2009 [18 August 2011]. （原始内容存档于2010-05-28）.
Plait, Phil. Huge lakes of water may exist under Europa's ice. Discover. Bad Astronomy Blog. 17 November 2011 [2021-11-15]. （原始内容存档于2012-04-09）.
Scientists Find Evidence for "Great Lake" on Europa and Potential New Habitat for Life. The University of Texas at Austin. 16 November 2011 [2021-11-15]. （原始内容存档于2013-12-18）.
Cook, Jia-Rui C. Clay-Like Minerals Found on Icy Crust of Europa. NASA. 11 December 2013 [11 December 2013]. （原始内容存档于2020-01-30）.
Wall, Mike. NASA hopes to launch ambitious mission to icy Jupiter moon. Space.com. 5 March 2014 [15 April 2014]. （原始内容存档于2018-09-08）.
Clark, Stephen. Economics, water plumes to drive Europa mission study. Spaceflight Now. 14 March 2014 [15 April 2014]. （原始内容存档于2014-04-16）.
Than, Ker. Scientists Reconsider Habitability of Saturn's Moon. Space.com. 13 September 2005 [2021-11-15]. （原始内容存档于2021-11-12）.
Britt, Robert Roy. Lakes Found on Saturn's Moon Titan. Space.com. 28 July 2006 [2021-11-15]. （原始内容存档于2021-11-12）.
Lakes on Titan, Full-Res: PIA08630. 24 July 2006. （原始内容存档于29 September 2006）.
What is Consuming Hydrogen and Acetylene on Titan?. NASA/JPL. 2010 [6 June 2010]. （原始内容存档于29 June 2011）.
McKay, C. P.; Smith, H. D. Possibilities for methanogenic life in liquid methane on the surface of Titan. Icarus. 2005, 178 (1): 274–276 [2021-11-15]. Bibcode:2005Icar..178..274M. doi:10.1016/j.icarus.2005.05.018. （原始内容存档于2021-03-09）.
Hussmann, Hauke; Sohl, Frank; Spohn, Tilman. Subsurface oceans and deep interiors of medium-sized outer planet satellites and large trans-neptunian objects. Icarus. November 2006, 185 (1): 258–273 [2021-11-15]. Bibcode:2006Icar..185..258H. doi:10.1016/j.icarus.2006.06.005. （原始内容存档 (PDF)于2015-08-31）.
Choi, Charles Q. The Chance for Life on Io. Astrobiology Magazine. 10 June 2010 [25 May 2013]. （原始内容存档于2014-01-16）.
新研究称海盗号30年前已发现火星有机物. 新浪科技. 2011-01-11 [2012-09-11]. （原始内容存档于2013-06-16）（中文）.
谢懿. 寻找海盗号错过的火星秘密. 2008-11-14 [2012-09-11]. （原始内容存档于2012-07-18）（中文）.
Bianciardi, Giorgio; Miller, Joseph D.; Straat, Patricia Ann; Levin, Gilbert V. Complexity Analysis of the Viking Labeled Release Experiments. IJASS. March 2012, 13 (1): 14–26 [15 April 2012]. Bibcode:2012IJASS..13...14B. doi:10.5139/IJASS.2012.13.1.14. （原始内容存档于2012年4月15日）（英语）.
Klotz, Irene. MARS VIKING ROBOTS 'FOUND LIFE'. DiscoveryNews. 12 April 2012 [2012-04-16]. （原始内容存档于2013-01-26）（英语）.
Jia-Rui Cook. Signs Changing Fast for Voyager at Solar System Edge. NASA. 2012-08-03 [2012-09-08]. （原始内容存档于2012-08-27）（英语）.
NASA Curiosity Rover Begins Eastbound Trek on Martian Surface. NASA. 2012-08-29 [2012-09-10]. （原始内容存档于2012-09-08）（英语）.
Project Ozma - The first SETI search. SETI.org. [2013-05-19]. （原始内容存档于2013-08-29）（英语）.
Project Dorothy. Nishi-Harima Astronomical Observatory. [2013-05-19]. （原始内容存档于2013-05-07）（英语）.
关于 SETI@home. University of California. [2012-09-08]. （原始内容存档于2012-09-09）（中文）.
Freemann J. Dyson. Search for Artificial Stellar Sources of Infra-Red Radiation. Science. 1960, 131 (3414): 1667–1668 [2013-06-18]. PMID 17780673. doi:10.1126/science.131.3414.1667. （原始内容存档于2019-07-14）.
Ray Villard, "Super-Civilizations Might Live Off Black Holes" （页面存档备份，存于互联网档案馆）, "Discovery News"
Redfern, Martin. Venus clouds 'might harbour life'. BBC News. 2004-05-25 [2007-12-05]. （原始内容存档于2007-02-22）（英语）.
科學新發現 - 搜尋外星人. 國家地理頻道. [2013年6月16日]. （原始内容存档于2015年7月6日）（中文）.
NASA最新宣称：1235颗行星可能存在外星生命. 搜狐科学. 2011-03-31 [2012-09-07]. （原始内容存档于2013-06-15）（中文）.
Than, Ker. Hopes dim for life on distant planet. USA Today. 2007-06-18 [2010-05-02]. （原始内容存档于2015-06-17）.
Planet hunters spy distant haul. BBC News. 2007-05-29 [2010-05-02]. （原始内容存档于2010-01-06）.
View all 26 comments Leave a comment. Scientists ID 'Habitable' Exoplanet - New model suggests Gliese 581D a likely candidate for life. Newser.com. 2011-05-18 [2012-06-13]. （原始内容存档于2012-05-12）.
Kepler 22-b: Earth-like planet confirmed. BBC. 2011-12-05 [5 December 2011]. （原始内容存档于2019-08-27）.
NASA's Kepler Confirms Its First Planet In Habitable Zone. NASA Press Release. 12/5/2011 [2013-06-18]. （原始内容存档于2012-01-14）. 请检查|date=中的日期值 (帮助)
Schneider, Jean. Interactive Extra-solar Planets Catalog. 太阳系外行星百科. 10 September 2011 [2012-01-30]. （原始内容存档于2012-07-05）.
"Kepler: A Search for Habitable Planets" （页面存档备份，存于互联网档案馆）, "NASA Ames Research Center"
Who discovered that the Sun was a Star?. Stanford Solar Center. [2012-08-15]. （原始内容存档于2017-07-10）.
Star Struck, a letter to a Rabbi. ohr.edu. [2011-04-29]. （原始内容存档于2011-06-04）.
Kaplan, Rabbi Aryeh. Extraterrestrial life. torah.org. [2011年4月29日]. （原始内容存档于2010年12月3日）.
Revelation, Rationality, Knowledge & Truth, by Mirza Tahir Ahmad. Chapter; The Quran and Extraterrestrial Life. [2013-06-16]. （原始内容存档于2013-06-03）.
Wiker, Benjamin D. Christianity and the Search for Extraterrestrial Life. crisismagazine.com. [2013-06-16]. （原始内容存档于2003-02-10）.
Dengrove, Richard. The Man Who Invented Extraterrestrials: Nicholas of Cusa. Challenger 29. Winter 2008 [2010-08-27]. （原始内容存档于2010-06-15）.
Giordano Bruno. Introductory Epistle: Argument of the Third Dialogue. On the Infinite Universe and Worlds (De l'Infinito Universo et Mondi). [2011-04-29]. （原始内容存档于2014-10-13）（英语）.
Schyrleus de Rheita. cosmovisions.com. [2011-04-29]. （原始内容存档于2011-07-08）（法语）.
Doctrine and Covenants 76:23-24. [2013-06-13]. （原始内容存档于2013-05-10）.
Moses 1:33. [2013-06-13]. （原始内容存档于2013-06-02）.
Neal A. Maxwell, Our Creator's Cosmos (PDF). [2013-06-13]. （原始内容存档 (PDF)于2013-05-15）.
Radio Listeners in Panic, Taking War Drama as Fact. New York Times. 1938-10-31 [2013-06-20]. （原始内容 (reprint)存档于2013-06-29）.
Edward J. Ruppelt. Chapter 1: Project Blue Book and the UFO Story, 1. Report On Unidentified Flying Objects. [2013-06-20]. （原始内容存档于2013-09-27）.
Presidential UFO.com （页面存档备份，存于互联网档案馆） Roswell Proof.com （页面存档备份，存于互联网档案馆）
Our Founders. Planetary Socity. [2013-06-21]. （原始内容存档于2013-05-28）（中文）.
Villard, Ray. The Search for Extraterrestrial Civilizations Comes of Age. Discovery News. [2012-10-17]. （原始内容存档于2012-10-04）.
Crichton, Michael. Aliens Cause Global Warming. crichton-official.com. 2003-01-17 [2012-10-18]. （原始内容存档于2006-01-01）.
SETI: Search For Extra-Terrestrial Intelligence. [2012-10-21]. （原始内容存档于2012-05-14）（英语）.
Michel Desmarquet. 海奥华预言. Amazon. [2020-04-30]. （原始内容存档于2020-05-10）（英语）.
网红们所做的有关《海奥华预言》的视频节目. [2020-12-26]. （原始内容存档于2022-01-18）.
「海奧華預言」惡魔來襲！從此再無海奧華！（下集）（2020）. [2020-12-26]. （原始内容存档于2021-02-14）.
Peter Ward, Donald Brownlee. Rare Earth: Why Complex Life is Uncommon in the Universe. Amazon. [2012-10-21]. （原始内容存档于2015-11-03）（英语）.
L'extraterrestre è mio fratello. L'Osservatore Romano. 2008-05-14 [2013-05-22]. （原始内容存档于2012-10-21）（意大利语）.
The extraterrestrial is my brother (罗马观察报采访全文的英文翻译). 2008-05-23 [2013-05-22]. （原始内容存档于2014-06-02）（英语）.
Willey, David. Vatican says aliens could exist. news.bbc.co.uk. 2008-05-13 [2010-01-04]. （原始内容存档于2010-07-26）（英语）.
Kaufman, Marc. The religious questions raised by aliens. The Washington Post. 2009-11-08 [2010-05-02]. （原始内容存档于2010-01-06）.
Sample, Ian. Nasa scientist claims evidence of extraterrestrial life. The Guardian (London). 2011-03-06 [2012-11-03]. （原始内容存档于2012-06-21）.
Hoover, Richard B. Fossils of Cyanobacteria in CI1 Carbonaceous Meteorites: Implications to Life on Comets, Europa, and Enceladus. Journal of Cosmology. 2011, 13: xxx [2011-03-06]. （原始内容存档于2011-03-08）.
Kerry Sheridan. NASA shoots down alien fossil claims. ABC News. 7 March 2011 [2011-03-07]. （原始内容存档于2011-07-18）.
Irish astronomer says he has successfully tracked UFO’s. Irish Central. 2011-04-22 [2013-05-20]. （原始内容存档于2013-06-06）（英语）.
墨西哥展出“外星人”，或成为首个承认外星生物的国家—新闻—科学网. news.sciencenet.cn. 2021-11-20 [2023-09-14]. （原始内容存档于2023-11-10）（中文）.
Warnung von Astrophysiker Hawking. spiegel.de. 2010-04-25 [2013-06-19]. （原始内容存档于2013-06-09）（德语）.
CNN LARRY KING LIVE. transcripts.cnn.com. 2010-04-30 [2012-03-18]. （原始内容存档于2012-10-25）（英语）.
Vorbereitungen für den Alien-Kontakt （页面存档备份，存于互联网档案馆） derstandard.at, 10. Januar 2011; Simon Conway Morris: Predicting what extra-terrestrials will be like: and preparing for the worst. Phil. Trans. R. Soc. A, 2011 369:555-571; doi:10.1098/rsta.2010.0276, online （页面存档备份，存于互联网档案馆） (PDF), abgerufen am 12. Januar 2011
金星. 人类和外星人该握手吗. 中国科学报. 2012-01-21 [2012-09-06]. （原始内容存档于2012-01-24）（中文）.
诺奖得主：不要和外星人说话. 新华网. 2012-08-27 [2012-09-06]. （原始内容存档于2012-08-30）（中文）.
美科学家质疑霍金"外星人威胁论" 称它们很善良. 凤凰网. 2012-05-30 [2012-09-06]. （原始内容存档于2012-06-04）（中文）.
Warnung von Astrophysiker Hawking （页面存档备份，存于互联网档案馆） Spiegel online, 25. April 2010; Is calling E.T. a smart move? （页面存档备份，存于互联网档案馆） physorg.com, 29. Jänner 2010, abgerufen am 7. März 2011
John Billingham, et al.: Costs and Difficulties of Large-Scale 'Messaging', and the Need for International Debate on Potential Risks （页面存档备份，存于互联网档案馆）@arxiv.org; Active SETI （页面存档备份，存于互联网档案馆）@ en.wikipedia, abgerufen am 7. März 2011
Alexander Zaitsev, et al. Making a Case for METI- METI is risky （页面存档备份，存于互联网档案馆） setileague.org; Detection Probability of Terrestrial Radio Signals by a Hostile Super-civilization@Nasa ADS; Harald Zaun: SETI - die wissenschaftliche Suche nach außerirdischen Zivilisationen - Chancen, Perspektiven, Risiken. Heise, Hannover 2010, ISBN 978-3-936931-57-0, S.271ff; Aleksandr Leonidovich Zaitsev （页面存档备份，存于互联网档案馆） en.wikipedia.org, abgerufen am 7. März 2011
美国报告称温室气体排放可能将带来外星人攻击. 2011-08-23 [2013-05-20]. （原始内容存档于2016-03-04）（中文）.
Studie als Leitfaden für „ersten Kontakt“ （页面存档备份，存于互联网档案馆） orf.at, abgerufen am 20. August 2011;Aliens may strike humans to save the galaxy-study （页面存档备份，存于互联网档案馆） ibtimes.com; Seth D. Baum, et al.: Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis （页面存档备份，存于互联网档案馆） @arxiv, pdf, abgerufen am 20. August 2011
Baum, Seth; Haqq-Misra, Jacob; Domagal-Goldman, Shawn. "Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis" （页面存档备份，存于互联网档案馆）, Acta Astronautica, 2011, 68 (11-12):2014-2129, April 22, 2011, accessed August 18, 2011.
David Pescovitz. White House: no evidence of ETs yet (html). 2011-11-08 [2012-09-09]. （原始内容存档于2012-11-01）（英语）.
联合国设立外太空事务办公室任命星际外交官. 2010-09-27 [2012-09-09]. （原始内容存档于2013-06-03）（中文）.
Matthew Weaver. UN plan for 'alien ambassador' a case of science fiction?. 2010-09-27 [2012-09-09]. （原始内容存档于2012-10-22）（英语）.
U.N. Denies Appointing 'First Contact' for Visiting Space Aliens. Fox News. 2010-09-27 [2012-11-03]. （原始内容存档于2013-05-22）.
联合国否认设ET接待大使神秘外空司只为技术开发之用. 2010-09-29 [2012-09-09]. （原始内容存档于2013-06-15）（中文）.
Global Risks 2013 (pdf). World Economic Forum. [2013-05-20]. （原始内容存档 (PDF)于2013-05-09）（英语）.

webcitation.org

How Many Stars are in the Milky Way?. universetoday.com. [2013-06-19]. （原始内容存档于2014-02-03）.
Lovett, Richard A. Enceladus named sweetest spot for alien life. Nature. 31 May 2011 [3 June 2011]. doi:10.1038/news.2011.337. （原始内容存档于2011-10-06）.

weforum.org

www3.weforum.org

Global Risks 2013 (pdf). World Economic Forum. [2013-05-20]. （原始内容存档 (PDF)于2013-05-09）（英语）.

wikipedia.org

en.wikipedia.org

John Billingham, et al.: Costs and Difficulties of Large-Scale 'Messaging', and the Need for International Debate on Potential Risks （页面存档备份，存于互联网档案馆）@arxiv.org; Active SETI （页面存档备份，存于互联网档案馆）@ en.wikipedia, abgerufen am 7. März 2011
Alexander Zaitsev, et al. Making a Case for METI- METI is risky （页面存档备份，存于互联网档案馆） setileague.org; Detection Probability of Terrestrial Radio Signals by a Hostile Super-civilization@Nasa ADS; Harald Zaun: SETI - die wissenschaftliche Suche nach außerirdischen Zivilisationen - Chancen, Perspektiven, Risiken. Heise, Hannover 2010, ISBN 978-3-936931-57-0, S.271ff; Aleksandr Leonidovich Zaitsev （页面存档备份，存于互联网档案馆） en.wikipedia.org, abgerufen am 7. März 2011

worldcat.org

Arrhenius, Svante. Worlds in the Making: The Evolution of the Universe. trans. H. Borns. Harper & Brothers. March 1908. OCLC 1935295.
Johnson, J. C.; Johnson, P. A.; Mardon, A. A. Prospecting Microbial Biosignatures from Venusian Clouds. LPI Contributions. November 2020, 2356 (2356): 8024 [2021-11-15]. Bibcode:2020LPICo2356.8024J. ISSN 0161-5297. （原始内容存档于2021-11-15）（英语）.
Küppers, M.; O'Rourke, L.; Bockelée-Morvan, D.; Zakharov, V.; Lee, S.; Von Allmen, P.; Carry, B.; Teyssier, D.; Marston, A.; Müller, T.; Crovisier, J.; Barucci, M. A.; Moreno, R. Localized sources of water vapour on the dwarf planet (1) Ceres. Nature. 23 January 2014, 505 (7484): 525–527. Bibcode:2014Natur.505..525K. ISSN 0028-0836. PMID 24451541. S2CID 4448395. doi:10.1038/nature12918.

wsu.edu

news.wsu.edu

Mysteries from the moon's past. Washington State University. 23 July 2018 [22 August 2020]. （原始内容存档于2021-09-07）.

xinhuanet.com

news.xinhuanet.com

美航天局科学家：砷元素可构筑生命分子的研究尚未结束. 新华网. 2012-07-10 [2012-09-12] （中文）.
诺奖得主：不要和外星人说话. 新华网. 2012-08-27 [2012-09-06]. （原始内容存档于2012-08-30）（中文）.

xinmin.cn

news.xinmin.cn

一半欧美人相信外星人存在. 2011-01-12 [2012-08-14]. （原始内容存档于2011-09-11）（中文）.

youtube.com

Video (00:51) – Jupiter's 'Club Sandwich' Moon. NASA. 1 May 2014 [2 May 2014]. （原始内容存档于2019-11-09）.
科學新發現 - 搜尋外星人. 國家地理頻道. [2013年6月16日]. （原始内容存档于2015年7月6日）（中文）.
「海奧華預言」惡魔來襲！從此再無海奧華！（下集）（2020）. [2020-12-26]. （原始内容存档于2021-02-14）.

zenodo.org

Kargel, Jeffrey S.; Kaye, Jonathan Z.; Head, James W.; Marion, Giles M.; Sassen, Roger; et al. Europa's Crust and Ocean: Origin, Composition, and the Prospects for Life. Icarus. November 2000, 148 (1): 226–265 [2021-11-15]. Bibcode:2000Icar..148..226K. doi:10.1006/icar.2000.6471. （原始内容存档于2020-07-31）.
McKay, C. P.; Smith, H. D. Possibilities for methanogenic life in liquid methane on the surface of Titan. Icarus. 2005, 178 (1): 274–276 [2021-11-15]. Bibcode:2005Icar..178..274M. doi:10.1016/j.icarus.2005.05.018. （原始内容存档于2021-03-09）.