Carl Sagan (English Wikipedia)

Terzian & Trimble 1997, Article in Bull AAS 29(4). Terzian, Yervant; Trimble, Virginia (January 1, 1997). "Carl Sagan (1934–1996)". Bulletin of the AAS. 29 (4).

accuracyproject.org

"Carl Sagan". Internet Accuracy Project. Grandville, Michigan. Archived from the original on March 8, 2012. Retrieved August 22, 2012.

achievement.org

"Golden Plate Awardees of the American Academy of Achievement". achievement.org. American Academy of Achievement. Archived from the original on December 15, 2016. Retrieved May 21, 2020.

americanhumanist.org

"From the AHA archives: Carl Sagan's 1981 Humanist of the year speech". americanhumanist.org. Archived from the original on December 26, 2014. Retrieved December 25, 2014.

americanscientist.org

Impey, Chris (January–February 2000). "Carl Sagan, Carl Sagan: Biographies Echo an Extraordinary Life". American Scientist (Book review). 88 (1). ISSN 0003-0996. Archived from the original on May 16, 2013. Retrieved March 10, 2013.

amphilsoc.org

"American Philosophical Society Member History". Philadelphia, PA: American Philosophical Society. Archived from the original on November 13, 2013. Retrieved September 3, 2013.

anb.org

Davidson, Keay (2000). "Sagan, Carl (1934–1996), space scientist, author, science popularizer, TV personality, and antinuclear weapons activist". American National Biography. Oxford University Press. doi:10.1093/anb/9780198606697.article.1302612. ISBN 978-0-19-860669-7. Archived from the original on May 14, 2021. Retrieved June 23, 2021.

anu.edu.au

info.anu.edu.au

"STAR COUNT: ANU ASTRONOMER MAKES BEST YET". Sydney, Australia: Australian National University Media Releases. July 17, 2003. Archived from the original on March 9, 2011. Retrieved October 27, 2015.

aps.org

"APS Fellow Archive". APS. Archived from the original on October 7, 2020. Retrieved October 5, 2020.

archive.org

Davidson 1999, The book is dedicated to Pollack. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). University Press of Mississippi. p. 14. ISBN 978-1-57806-736-7. Extract of page 14 Archived December 3, 2016, at the Wayback Machine
Poundstone 1999, pp. 363–364, 374–375. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Davidson 1999. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 12. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 2. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 9. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 14. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 15. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 18. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 23. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 24. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 25. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, p. 15. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, p. 14. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Davidson 1999, p. 138. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 204. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 213. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). Univ. Press of Mississippi. p. xxi. ISBN 978-1-57806-736-7. Extract of page xxi Archived December 23, 2019, at the Wayback Machine.
Shapiro, Fred R., ed. (2006). The Yale Book of Quotations. Foreword by Joseph Epstein. New Haven, CT: Yale University Press. p. 660. ISBN 978-0-300-10798-2. LCCN 2006012317. OCLC 66527213.
Sagan, Carl (1985). Cosmos. Balantine Books. p. 3. ISBN 0345331354.
Davidson 1999, p. 202. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 227. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 341. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 203. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 297. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, p. 364 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, pp. 374–375 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Asimov, Isaac (1981) [Originally published 1980; Garden City, NY: Doubleday]. In Joy Still Felt: The Autobiography of Isaac Asimov, 1954–1978. New York: Avon. pp. 217, 302. ISBN 978-0-380-53025-0. LCCN 79003685. OCLC 7880716.
Sagan, Carl (1980) [Originally published 1979]. Broca's Brain: Reflections on the Romance of Science (Reprint ed.). New York: Ballantine Books. p. 330. ISBN 978-0-345-33689-7. LCCN 78021810. OCLC 428008204.
Grinspoon, Lester (1994) [2nd ed. published 1977; Cambridge, MA: Harvard University Press]. Marihuana Reconsidered. New introduction by author (2nd (reprint) ed.). Oakland, CA: Quick American Archives. ISBN 978-0-932551-13-9. LCCN 77076767. OCLC 32410025.
Davidson 1999, pp. 51–52. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Westrum, Ron (2000). "Limited Access: Six Natural Scientists and the UFO Phenomenon". In Jacobs, David M. (ed.). UFOs and Abductions: Challenging the Borders of Knowledge. Lawrence, KS: University Press of Kansas. pp. 31–55. ISBN 978-0-7006-1032-7. LCCN 00028970. OCLC 43615835.
Appelle, Stuart (2000). "Ufology and Academia: The UFO Phenomenon as a Scholarly Discipline". In Jacobs, David M. (ed.). UFOs and Abductions: Challenging the Borders of Knowledge. Lawrence, KS: University Press of Kansas. pp. 7–30. ISBN 978-0-7006-1032-7. LCCN 00028970. OCLC 43615835.
Davidson 1999, p. 168. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
David Jacobs. "The UFO Controversy In America" (1987), p. 122–124.

archive.today

"CosmoLearning Astronomy". CosmoLearning. Archived from the original on May 29, 2012. Retrieved October 8, 2009.

astronautical.org

"John F. Kennedy Astronautics Award". Springfield, VA: American Astronautical Society. Archived from the original on September 19, 2013. Retrieved September 3, 2013.

astrosociety.org

Morrison, David (October 3, 2007). "Taking a Hit: Asteroid Impacts & Evolution". Astronomical Society of the Pacific (Podcast). Astronomical Society of the Pacific. Archived from the original on August 18, 2014. Retrieved August 31, 2013.

baltimoresun.com

articles.baltimoresun.com

"Baltimore Sun – We are currently unavailable in your region". January 23, 1991. Archived from the original on October 6, 2014. Retrieved October 3, 2014.

bandcamp.com

bennjordan.bandcamp.com

"Pale Blue Dot, by Benn Jordan". Benn Jordan. Archived from the original on December 11, 2019. Retrieved December 11, 2019.

bartelby.com

"Sagan, Carl Edward". Columbia Encyclopedia (Sixth ed.). New York: Columbia University Press. May 2001. Archived from the original on October 11, 2007. Retrieved August 30, 2013.

bbc.co.uk

news.bbc.co.uk

Whitehouse, David (October 15, 1999). "Carl Sagan: A life in the cosmos". BBC News. Archived from the original on July 25, 2014. Retrieved August 30, 2013.

berkeley.edu

sciencereview.berkeley.edu

"Happy (Belated) Birthday Carl!". University of California, Berkeley The Berkeley Science Review. November 11, 2013. Archived from the original on December 3, 2013. Retrieved December 1, 2013.

books.google.com

Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). University Press of Mississippi. p. 14. ISBN 978-1-57806-736-7. Extract of page 14 Archived December 3, 2016, at the Wayback Machine
Sic. See Spangenburg, Ray; Moser, Kit; Moser, Diane (2004). Carl Sagan: A Biography (illustrated ed.). Greenwood Publishing Group. p. 28. ISBN 978-0-313-32265-5. Archived from the original on December 6, 2021. Retrieved August 31, 2018 – via Google Books.
Ulivi, Paolo (April 6, 2004). Lunar Exploration: Human Pioneers and Robotic Surveyors. Springer Science & Business Media. ISBN 978-1-85233-746-9. Archived from the original on January 1, 2014. Retrieved April 15, 2016 – via Google Books.
Sagan, Carl (1996). Demon-Haunted World: Science as a Candle in the Dark. Ballantine Books. p. 25. Archived from the original on October 3, 2022 – via Google Books.
Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). Univ. Press of Mississippi. p. xxi. ISBN 978-1-57806-736-7. Extract of page xxi Archived December 23, 2019, at the Wayback Machine.
Pierrehumbert, Raymond T. (2010). Principles of Planetary Climate. Cambridge University Press. p. 202. ISBN 978-1-139-49506-6. Archived from the original on July 30, 2019. Retrieved March 20, 2016 – via Google Books. Extract of page 202 Archived December 19, 2019, at the Wayback Machine.
Chaisson, Eric; McMillan, Stephen (1997). Astronomy Today (illustrated ed.). Prentice Hall. p. 266. ISBN 978-0-13-712382-7. Archived from the original on March 15, 2021. Retrieved June 20, 2020 – via Google Books.
Morris, Julian (2000). Rethinking Risk and the Precautionary Principle. Butterworth-Heinemann. p. 116. ISBN 978-0-08-051623-3. Archived from the original on December 20, 2019 – via Google Books..
Brewster, Melanie E. (2014). Atheists in America (reprinted ed.). Columbia University Press. p. 102. ISBN 978-0-231-53700-1. Archived from the original on December 23, 2019. Retrieved February 28, 2016 – via Google Books..
Fahy, Declan (March 6, 2015). The New Celebrity Scientists: Out of the Lab and into the Limelight. Rowman & Littlefield. p. 4. ISBN 978-1-4422-3343-0. Archived from the original on October 3, 2022. Retrieved June 21, 2022 – via Google Books.
Treharne, Trevor (2012). How to Prove God Does Not Exist: The Complete Guide to Validating Atheism. Universal-Publishers. p. 200. ISBN 978-1-61233-118-8. Archived from the original on March 15, 2021. Retrieved May 10, 2020 – via Google Books.
Head 2006, p. 70 Archived September 21, 2014, at the Wayback Machine Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Flournoy, Théodore (1983) [Originally published 1899; Geneva: Édition Atar]. Des Indes à la Planète Mars: Étude sur un cas de Somnambulisme avec Glossolalie [From India to the Planet Mars: A Study of a Case of Somnambulism with Glossolalia] (in French). Introduction by Hélène Boursinhac; translation by Daniel B. Vermilye (Reprint ed.). Geneva: Éditions Slatkine. pp. 344–345. ISBN 978-2-05-100499-2. OCLC 11558608. Archived from the original on December 26, 2019. Retrieved February 24, 2018 – via Google Books.
Sagan, Carl (2000) [Originally published 1973]. "'Hello, Central Casting? Send Me Twenty Extraterrestrials'". Carl Sagan's Cosmic Connection: An Extraterrestrial Perspective. Produced by Jerome Agel; new contributions by Freeman Dyson, Ann Druyan, and David Morrison (2nd ed.). Cambridge; New York: Cambridge University Press. p. 183. ISBN 978-0-521-78303-3. LCCN 00020378. OCLC 460747781. Archived from the original on January 4, 2017. Retrieved February 28, 2016 – via Google Books.

britannica.com

"Carl Sagan". Encyclopædia Britannica. December 16, 2022. Retrieved March 21, 2023.

c-span.org

Carl Sagan testifying to Congress, December 10, 1985, C-SPAN, https://www.c-span.org/video/?125856-1/greenhouse-effect Archived December 25, 2021, at the Wayback Machine

cannabisculture.com

Larsen, Dana (November 1, 1999). "Carl Sagan: toking astronomer". Cannabis Culture. Vancouver, B.C. Archived from the original on September 27, 2011. Retrieved May 2, 2007.

cnn.com

edition.cnn.com

"Star survey reaches 70 sextillion: And that's only the stars we can actually see". Sydney, Australia: CNN Science. July 23, 2003. Archived from the original on August 5, 2003. Retrieved October 27, 2014.

cnn.com

Quarles, Norma (December 20, 1996). "Carl Sagan dies at 62". CNN. Archived from the original on March 11, 2010. Retrieved December 5, 2011. Sagan was a noted astronomer whose lifelong passion was searching for intelligent life in the cosmos.

cornell.edu

ezra.cornell.edu

Dear Uncle Ezra, archived from the original on June 6, 2013, retrieved August 16, 2016

cosmolearning.com

"CosmoLearning Astronomy". CosmoLearning. Archived from the original on May 29, 2012. Retrieved October 8, 2009.

csicop.org

Morrison, David (January–February 2007). "Carl Sagan's Life and Legacy as Scientist, Teacher, and Skeptic". Skeptical Inquirer. 31 (1): 29–38. ISSN 0194-6730. Archived from the original on February 1, 2016. Retrieved August 31, 2013.
Frazier, Kendrick, ed. (July–August 2005). "Carl Sagan Takes Questions: More From His 'Wonder and Skepticism' CSICOP 1994 Keynote". Skeptical Inquirer. 29 (4). Archived from the original on December 21, 2016. Retrieved March 25, 2010.
Druyan, Ann (November–December 2003). "Ann Druyan Talks About Science, Religion, Wonder, Awe ... and Carl Sagan". Skeptical Inquirer. 27 (6). ISSN 0194-6730. Archived from the original on August 10, 2010. Retrieved July 27, 2010.
"CSICOP becomes CSI after thirty years". Committee for Skeptical Inquiry. November 20, 2006. Archived from the original on August 15, 2009.
"The Pantheon of Skeptics". CSI. Committee for Skeptical Inquiry. Archived from the original on January 31, 2017. Retrieved April 30, 2017.

cssp.us

"Sagan Award for Public Understanding of Science". Council of Scientific Society Presidents. Archived from the original on July 26, 2007. Retrieved May 2, 2007.

daviddarling.info

Much of Sagan's research in the field of planetary science is outlined by William Poundstone. Poundstone's biography of Sagan includes an 8-page list of Sagan's scientific articles published from 1957 to 1998. Detailed information about Sagan's scientific work comes from the primary research articles. Example: Sagan, C.; Thompson, W. R.; Khare, B. N. (1992). "Titan: A Laboratory for Prebiological Organic Chemistry". Accounts of Chemical Research. 25 (7): 286–292. doi:10.1021/ar00019a003. PMID 11537156. There is commentary on this research article about Titan at David J. Darling's The Encyclopedia of Science Archived March 10, 2005, at the Wayback Machine.

dickinson.edu

dh.dickinson.edu

"Carl Sagan – 1975". The Joseph Priestley Award. Dickinson University. Archived from the original on November 13, 2017. Retrieved February 1, 2017.

discovery.com

science.discovery.com

"Meet Carl Sagan". The Science Channel. Discovery Communications. Archived from the original on May 18, 2007. Retrieved August 31, 2013.

doi.org

Davidson, Keay (2000). "Sagan, Carl (1934–1996), space scientist, author, science popularizer, TV personality, and antinuclear weapons activist". American National Biography. Oxford University Press. doi:10.1093/anb/9780198606697.article.1302612. ISBN 978-0-19-860669-7. Archived from the original on May 14, 2021. Retrieved June 23, 2021.
Reiffel, Leonard (May 4, 2000). "Sagan breached security by revealing US work on a lunar bomb project". Nature. 405 (13): Correspondence. doi:10.1038/35011148. ISSN 0028-0836. PMID 10811192.
Much of Sagan's research in the field of planetary science is outlined by William Poundstone. Poundstone's biography of Sagan includes an 8-page list of Sagan's scientific articles published from 1957 to 1998. Detailed information about Sagan's scientific work comes from the primary research articles. Example: Sagan, C.; Thompson, W. R.; Khare, B. N. (1992). "Titan: A Laboratory for Prebiological Organic Chemistry". Accounts of Chemical Research. 25 (7): 286–292. doi:10.1021/ar00019a003. PMID 11537156. There is commentary on this research article about Titan at David J. Darling's The Encyclopedia of Science Archived March 10, 2005, at the Wayback Machine.
Gresshoff, P. M. (2004). "Scheel D. and Wasternack C.(eds) Plant Signal Transduction". Annals of Botany (Book review). 93 (6): 783–784. doi:10.1093/aob/mch102. PMC 4242307.
Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.
Sagan, Carl (1990). "Guest Comment: Preserving and cherishing the Earth—An appeal for joint commitment in science and religion". American Journal of Physics. 58 (7). American Association of Physics Teachers (AAPT): 615–617. Bibcode:1990AmJPh..58..615S. doi:10.1119/1.16418. ISSN 0002-9505. Archived from the original on January 26, 2021. Retrieved April 23, 2022.

drewassociates.com

"Who's Out There? – Films – Drew Associates". Drew Associates. Archived from the original on March 14, 2024. Retrieved March 14, 2024.

druglibrary.org

Davidson, Keay (August 22, 1999). "Billions and Billions of '60s Flashbacks". The San Francisco Examiner. Archived from the original on June 13, 2010. Retrieved May 2, 2007.

e-reading.club

"Chapter 18. The Marsh of Camarina – Pale Blue Dot: A Vision of the Human Future in Space". e-reading.club. Archived from the original on September 24, 2015. Retrieved September 1, 2015.

emmys.com

"Cosmos". Academy of Television Arts & Sciences. Archived from the original on March 25, 2014. Retrieved September 4, 2013.

futureoflife.org

"Future of Life Award". Future of Life Institute. Archived from the original on August 14, 2022. Retrieved August 23, 2022.

ghostarchive.org

"Ted Turner Asks Carl Sagan If He Is a Socialist". March 14, 2016. Archived from the original on November 24, 2021 – via YouTube.
Boswell, John (November 9, 2009). A Glorious Dawn (7-in (17.5 cm) gramophone record). Nashville, TN: Third Man Records. Archived from the original on November 24, 2021. Retrieved September 3, 2013.

harvard.edu

ui.adsabs.harvard.edu

Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.
Sagan, Carl; Ostro, Steven J. (Summer 1994). "Long-Range Consequences of Interplanetary Collisions" (PDF). Issues in Science and Technology. 10 (4): 67–72. Bibcode:1994IST....10...67S. ISSN 0748-5492. Archived from the original (PDF) on December 3, 2013. Retrieved August 31, 2013.
Sagan, Carl (1990). "Guest Comment: Preserving and cherishing the Earth—An appeal for joint commitment in science and religion". American Journal of Physics. 58 (7). American Association of Physics Teachers (AAPT): 615–617. Bibcode:1990AmJPh..58..615S. doi:10.1119/1.16418. ISSN 0002-9505. Archived from the original on January 26, 2021. Retrieved April 23, 2022.

headphonecommute.com

"Two and a Half Questions with Benn Jordan". Headphone Commute. December 12, 2008. Archived from the original on December 11, 2019. Retrieved December 11, 2019.

huffingtonpost.com

"Number of Stars in the Universe Could Be 300 Sextillion, Triple The Amount Scientists Previously Thought: Study". HuffPost. December 1, 2010. Archived from the original on December 4, 2010. Retrieved September 3, 2016.

iigwest.com

"The 2007 IIG Awards". IIG. Los Angeles: Independent Investigations Group. August 18, 2007. Archived from the original on July 18, 2011. Retrieved July 1, 2011.

imdb.com

"Greatest American". IMDb. Archived from the original on September 22, 2020. Retrieved September 2, 2019.

italianamericanwriters.com

Women On War Archived October 6, 2014, at the Wayback Machine, Daniela Gioseffi.

jstor.org

Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.

ku.edu

sfcenter.ku.edu

"The John W. Campbell Memorial Award". Lawrence, KS: Center for the Study of Science Fiction. Archived from the original on December 29, 2012. Retrieved September 3, 2013.

kveller.com

"Sasha Sagan on Making Jewish Rituals Meaningful for Secular Jews". Kveller. October 23, 2019. Archived from the original on November 6, 2019. Retrieved November 6, 2019.

lawsoflife.co.uk

Rawson, Hugh (2008). "Sagan's Standard". The Unwritten Laws of Life. CSBC Ltd. Archived from the original on January 12, 2012. Retrieved September 1, 2013.

loc.gov

lccn.loc.gov

Davidson 1999, The book is dedicated to Pollack. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, pp. 363–364, 374–375. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Davidson 1999. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 12. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 2. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 9. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Spangenburg & Moser 2004, pp. 2–5. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Davidson 1999, p. 14. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 15. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 18. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 23. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 24. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 25. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, p. 15. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, p. 14. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Head 2006, p. xxi. Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Spangenburg & Moser 2004, p. 28. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Davidson 1999, p. 138. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 204. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 213. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl (1985) [Originally published 1980]. Cosmos (1st Ballantine Books ed.). New York: Ballantine Books. ISBN 978-0-345-33135-9. LCCN 80005286. OCLC 12814276.
Sagan & Druyan 1997, pp. 3–4. ——; Druyan, Ann (1997). Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium (1st ed.). New York: Random House. ISBN 978-0-679-41160-4. LCCN 96052730. OCLC 36066119.
Shapiro, Fred R., ed. (2006). The Yale Book of Quotations. Foreword by Joseph Epstein. New Haven, CT: Yale University Press. p. 660. ISBN 978-0-300-10798-2. LCCN 2006012317. OCLC 66527213.
Sagan 1995, p. 257. —— (1995). The Demon-Haunted World: Science as a Candle in the Dark (1st ed.). New York: Random House. ISBN 978-0-394-53512-8. LCCN 95034076. OCLC 779687822. (Note: errata slip inserted.)
Head 2006, p. 86–87. Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Davidson 1999, p. 202. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 227. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 341. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 203. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 297. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Spangenburg & Moser 2004, p. 106. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Poundstone 1999, p. 364 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, pp. 374–375 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Asimov, Isaac (1981) [Originally published 1980; Garden City, NY: Doubleday]. In Joy Still Felt: The Autobiography of Isaac Asimov, 1954–1978. New York: Avon. pp. 217, 302. ISBN 978-0-380-53025-0. LCCN 79003685. OCLC 7880716.
Sagan, Carl (1980) [Originally published 1979]. Broca's Brain: Reflections on the Romance of Science (Reprint ed.). New York: Ballantine Books. p. 330. ISBN 978-0-345-33689-7. LCCN 78021810. OCLC 428008204.
Head 2006, p. 70 Archived September 21, 2014, at the Wayback Machine Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Head, Tom (1997). "Conversations with Carl". Skeptic. 13 (1): 32–38. Excerpted in Head 2006 Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Sagan, Carl (1997) [Originally published 1995]. The Demon-Haunted World: Science as a Candle in the Dark (1st Ballantine Books ed.). New York: Ballantine Books. p. 278. ISBN 978-0-345-40946-1. LCCN 95034076. OCLC 36504316.
Grinspoon, Lester (1994) [2nd ed. published 1977; Cambridge, MA: Harvard University Press]. Marihuana Reconsidered. New introduction by author (2nd (reprint) ed.). Oakland, CA: Quick American Archives. ISBN 978-0-932551-13-9. LCCN 77076767. OCLC 32410025.
Davidson 1999, pp. 51–52. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Westrum, Ron (2000). "Limited Access: Six Natural Scientists and the UFO Phenomenon". In Jacobs, David M. (ed.). UFOs and Abductions: Challenging the Borders of Knowledge. Lawrence, KS: University Press of Kansas. pp. 31–55. ISBN 978-0-7006-1032-7. LCCN 00028970. OCLC 43615835.
Appelle, Stuart (2000). "Ufology and Academia: The UFO Phenomenon as a Scholarly Discipline". In Jacobs, David M. (ed.). UFOs and Abductions: Challenging the Borders of Knowledge. Lawrence, KS: University Press of Kansas. pp. 7–30. ISBN 978-0-7006-1032-7. LCCN 00028970. OCLC 43615835.
Sagan 1995, pp. 81–96, 99–104 —— (1995). The Demon-Haunted World: Science as a Candle in the Dark (1st ed.). New York: Random House. ISBN 978-0-394-53512-8. LCCN 95034076. OCLC 779687822. (Note: errata slip inserted.)
Davidson 1999, p. 168. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl (2000) [Originally published 1973]. "'Hello, Central Casting? Send Me Twenty Extraterrestrials'". Carl Sagan's Cosmic Connection: An Extraterrestrial Perspective. Produced by Jerome Agel; new contributions by Freeman Dyson, Ann Druyan, and David Morrison (2nd ed.). Cambridge; New York: Cambridge University Press. p. 183. ISBN 978-0-521-78303-3. LCCN 00020378. OCLC 460747781. Archived from the original on January 4, 2017. Retrieved February 28, 2016 – via Google Books.

rs5.loc.gov

The Seth MacFarlane Collection of the Carl Sagan and Ann Druyan Archive: A Finding Aid to the Collection in the Library of Congress (PDF). Manuscript Division, Library of Congress. 2013. Archived (PDF) from the original on March 8, 2016. Retrieved January 17, 2016.

loc.gov

"2023 National Recording Registry selections". Library of Congress. Retrieved April 12, 2023.

newsroom.loc.gov

"National Recording Registry Inducts Music from Madonna, Mariah Carey, Queen Latifah, Daddy Yankee". Library of Congress. Retrieved April 12, 2023.

macobserver.com

Linzmayer, Owen; Chaffin, Bryan (November 15, 2004). "This Week in Apple History: November 14–20: McIntosh, IIe Killed, Butt-Head Astronomer". The Mac Observer. The Mac Observer, Inc. Archived from the original on February 19, 2012. Retrieved July 23, 2012.

marijuana-uses.com

Sagan, Carl. "Mr. X". Marijuana-Uses.com. Archived from the original on January 20, 2012. Retrieved August 7, 2009.

mathgenealogy.org

Carl Sagan at the Mathematics Genealogy Project

medium.com

Gault, Matthew (November 28, 2013). "When Earth Dreamed of Nuking the Moon". medium.com. War is Boring. Archived from the original on December 3, 2013. Retrieved November 28, 2013.

michaelshermer.com

Shermer, Michael (November 2, 2003). "Candle in the Dark". The Works of Michael Shermer. Michael Shermer. Archived from the original on September 27, 2009. Retrieved March 10, 2013. Article originally published in November 2003 issue of Scientific American.

mit.edu

Carl Sagan – website of the Massachusetts Institute of Technology

mnsu.edu

"Carl Sagan". EMuseum. Minnesota State University, Mankato. Archived from the original on May 28, 2010. Retrieved August 30, 2013.

nasa.gov

starchild.gsfc.nasa.gov

"StarChild: Dr. Carl Sagan". StarChild. NASA. Archived from the original on February 7, 2012. Retrieved October 8, 2009.

photojournal.jpl.nasa.gov

"Pale Blue Dot Revisited". NASA. February 12, 2020. Archived from the original on February 12, 2020. Retrieved February 12, 2020.

trs-new.jpl.nasa.gov

Sagan, Carl; Ostro, Steven J. (Summer 1994). "Long-Range Consequences of Interplanetary Collisions" (PDF). Issues in Science and Technology. 10 (4): 67–72. Bibcode:1994IST....10...67S. ISSN 0748-5492. Archived from the original (PDF) on December 3, 2013. Retrieved August 31, 2013.

history.nasa.gov

"Chapter 4 : The Space Age Begins" (PDF). History.nasa.gov. Archived (PDF) from the original on June 26, 2020. Retrieved March 1, 2019.

nasonline.org

"Public Welfare Medal". Washington, D.C.: National Academy of Sciences. Archived from the original on August 9, 2013. Retrieved February 18, 2011.

nationalgeographic.com

news.nationalgeographic.com

Vergano, Dan (March 16, 2014). "Who Was Carl Sagan?". National Geographic Daily News. Washington, D.C.: National Geographic Society. Archived from the original on May 13, 2014. Retrieved May 13, 2014.

neoteo.com

"Photo of Asimov and Sagan". Archived from the original on March 5, 2016. Retrieved November 4, 2016.

news.google.com

Wilmington morning Star Archived June 5, 2022, at the Wayback Machine. January 21, 1991.

newspapers.com

"X-Prize Group Founder to Speak at Induction". El Paso Times. El Paso, Texas. October 17, 2004. p. 59. Archived from the original on December 23, 2019. Retrieved March 27, 2019 – via Newspapers.com.

nightwish.com

"Latest News – Nightwish – The Official Website". nightwish.com. Archived from the original on November 19, 2017. Retrieved February 9, 2015.

nih.gov

pubmed.ncbi.nlm.nih.gov

Reiffel, Leonard (May 4, 2000). "Sagan breached security by revealing US work on a lunar bomb project". Nature. 405 (13): Correspondence. doi:10.1038/35011148. ISSN 0028-0836. PMID 10811192.
Much of Sagan's research in the field of planetary science is outlined by William Poundstone. Poundstone's biography of Sagan includes an 8-page list of Sagan's scientific articles published from 1957 to 1998. Detailed information about Sagan's scientific work comes from the primary research articles. Example: Sagan, C.; Thompson, W. R.; Khare, B. N. (1992). "Titan: A Laboratory for Prebiological Organic Chemistry". Accounts of Chemical Research. 25 (7): 286–292. doi:10.1021/ar00019a003. PMID 11537156. There is commentary on this research article about Titan at David J. Darling's The Encyclopedia of Science Archived March 10, 2005, at the Wayback Machine.
Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.

ncbi.nlm.nih.gov

Gresshoff, P. M. (2004). "Scheel D. and Wasternack C.(eds) Plant Signal Transduction". Annals of Botany (Book review). 93 (6): 783–784. doi:10.1093/aob/mch102. PMC 4242307.

nj.com

Mascarenhas, Rohan (May 3, 2009). "2009 New Jersey Hall of Fame inductees welcomed at NJPAC". The Star-Ledger. Newark, NJ. Archived from the original on November 5, 2013. Retrieved September 3, 2013.

norml.org

"Foundation Board of Directors". NORML.org. Washington, D.C.: NORML and the NORML Foundation. August 13, 2010. Archived from the original on January 4, 2011. Retrieved September 2, 2013.
"Ann Druyan". NORML.org. Washington, D.C.: NORML and the NORML Foundation. Archived from the original on December 13, 2007. Retrieved July 20, 2011.

numericana.com

Michon, Gerard. "Sizing up the Universe – Stars, Sand and Nucleons – Numericana". numericana.com. Archived from the original on April 11, 2020. Retrieved April 1, 2018.

nytimes.com

Dicke, William (December 21, 1996). "Carl Sagan, an Astronomer Who Excelled at Popularizing Science, Is Dead at 62". The New York Times. Archived from the original on August 19, 2017. Retrieved August 31, 2013.
Sagan, Carl (May 28, 1978). "Growing up with Science Fiction". The New York Times. p. SM7. ISSN 0362-4331. Archived from the original on December 11, 2018. Retrieved December 12, 2018.
Safire, William (April 17, 1994). "Footprints on the Infobahn". The New York Times. Archived from the original on November 13, 2013. Retrieved August 31, 2013.
Rensberger, Boyce (May 29, 1977). "Carl Sagan: Obliged to Explain". The New York Times. Archived from the original on March 23, 2019. Retrieved March 23, 2019.

archive.nytimes.com

"Carl Sagan". The New York Times. Archived from the original on July 14, 2021. Retrieved May 7, 2021.

planetary.org

"Carl Sagan". Pasadena, CA: The Planetary Society. Archived from the original on February 21, 2015. Retrieved August 30, 2013.

presidencia.pt

ordens.presidencia.pt

"Cidadãos Estrangeiros Agraciados com Ordens Portuguesas". Página Oficial das Ordens Honoríficas Portuguesas. Archived from the original on February 8, 2012. Retrieved March 20, 2019.

proquest.com

Sagan, Carl (1960). Physical Studies of the Planets (PhD thesis). University of Chicago. p. ii. OCLC 20678107. ProQuest 301918122. A thesis in four parts submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Astronomy, University of Chicago, June, 1960

psu.edu

citeseerx.ist.psu.edu

Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.

publishersweekly.com

"Fiction Book Review: Contact by Carl Sagan, Author Simon & Schuster $18.45 (0p)". Publishers Weekly. October 1985. ISBN 978-0-671-43400-7. Archived from the original on November 6, 2019. Retrieved November 6, 2019.

richannel.org

"Christmas Lectures 1977: The Planets : Ri Channel". Ri Channel. London: Royal Institution of Great Britain. Archived from the original on February 20, 2012. Retrieved February 7, 2012.

scholar.google.com

"Carl Sagan". Google Scholar. Archived from the original on December 23, 2019. Retrieved November 20, 2018.

sciencenter.org

"Sagan Planet Walk". sciencenter.org. Ithaca, NY: Sciencenter. Archived from the original on February 5, 2013. Retrieved March 10, 2013.

scribd.com

Hirschmann, Kris. "The Kuwaiti Oil Fires". Facts on File. Archived from the original on January 2, 2014.

sfwa.org

nebulas.sfwa.org

"Carl Sagan". The Nebula Awards. Archived from the original on May 17, 2021. Retrieved May 17, 2021.

skeptic.com

Benford, Gregory (1997). "A Tribute to Carl Sagan: Popular & Pilloried". Skeptic. 13 (1). Archived from the original on April 16, 2011. Retrieved February 18, 2011.

skepticalinquirer.org

Palmer, Rob (March 31, 2020). "Exploring 'Possible Worlds' With Ann Druyan". Skepticalinquirer.org. CFI. Archived from the original on April 1, 2020. Retrieved April 17, 2020.
Frazier, Kendrick (January–February 2020). "It's the Carl Sagan & Ann Druyan Theater: A Gala Event in Los Angeles". Skeptical Inquirer. 44: 5. Archived from the original on March 2, 2020. Retrieved March 2, 2020.

skepticalinvestigations.org

Truzzi, Marcello (1998). Binkowski, Edward (ed.). "On Some Unfair Practices towards Claims of the Paranormal". Oxymoron: Annual Thematic Anthology of the Arts and Sciences. 2: The Fringe. ISSN 1090-2236. OCLC 35240974. Archived from the original on October 20, 2013. Retrieved September 1, 2013.

soltechdesigns.com

sustainable.soltechdesigns.com

Sagan, Carl (1990). "Guest Comment: Preserving and cherishing the Earth—An appeal for joint commitment in science and religion". American Journal of Physics. 58 (7). American Association of Physics Teachers (AAPT): 615–617. Bibcode:1990AmJPh..58..615S. doi:10.1119/1.16418. ISSN 0002-9505. Archived from the original on January 26, 2021. Retrieved April 23, 2022.

space.com

David, Leonard (December 1, 2014). "Epic Short Film 'Wanderers' Envisions Humanity's Future in Space". Space.com. Archived from the original on February 11, 2016. Retrieved February 21, 2016.

thecrimson.com

No Writer Attributed (August 21, 1963). "Sagan Synthesizes ATP in Laboratory". The Harvard Crimson. Archived from the original on December 22, 2015. Retrieved September 12, 2015.

thefreelibrary.com

Druyan, Ann (November 2000). "A New Sense of the Sacred Carl Sagan's 'Cosmic Connection'". The Humanist. 60 (6). Archived from the original on October 3, 2022. Retrieved December 20, 2023.

theverge.com

Lowensohn, Josh (February 4, 2014). "Massive Carl Sagan archive posted by Library of Congress". The Verge. Archived from the original on January 12, 2020. Retrieved January 16, 2016.
D'Orazio, Dante (November 30, 2014). "Wonderful short film imagines the day when we conquer the solar system". The Verge. Archived from the original on December 3, 2014. Retrieved February 19, 2016.

time.com

content.time.com

Golden, Frederic (October 20, 1980). "The Cosmic Explainer". Time. Archived from the original on September 1, 2013. Retrieved August 30, 2013.

tracking-board.com

"WARNER BROS. HEADS TO THE COSMOS WITH CARL SAGAN BIOPIC" Archived August 18, 2015, at the Wayback Machine, Tracking Board, August 17, 2015

tricksterbook.com

Truzzi, Marcello (1978). "On the Extraordinary: An Attempt at Clarification" (PDF). Zetetic Scholar. 1 (1): 11. Archived (PDF) from the original on April 11, 2019. Retrieved May 9, 2011.

uchicago.edu

astro.uchicago.edu

"Ryerson Astronomical Society". Ryerson Astronomical Society (RAS). University of Chicago Department of Astronomy and Astrophysics. Archived from the original on September 19, 2012. Retrieved August 22, 2012.

chronicle.uchicago.edu

"Graduate Students Receive First Sagan Teaching Awards". University of Chicago Chronicle. 13 (6). November 11, 1993. Archived from the original on March 10, 2012. Retrieved August 30, 2013.

ucla.edu

eventsprotocol.ucla.edu

"THE UCLA MEDAL RECIPIENTS, 1979 – PRESENT (ALPHABETICAL)" (PDF). Eventsprotocol.ucla.edu. Archived (PDF) from the original on April 11, 2019. Retrieved March 1, 2019.

utexas.edu

lib.utexas.edu

"The U.S. National Security State and Scientists'Challenge to Nuclear Weapons during the Cold War. Paul Harold Rubinson 2008" (PDF). Archived from the original (PDF) on September 24, 2014.

variety.com

"Andrew Garfield, Daisy Edgar-Jones Playing Carl Sagan and Ann Druyan in Sebastián Lelio's 'Voyagers' for FilmNation Entertainment". Variety. May 5, 2023.

web.archive.org

Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). University Press of Mississippi. p. 14. ISBN 978-1-57806-736-7. Extract of page 14 Archived December 3, 2016, at the Wayback Machine
"Carl Sagan". Google Scholar. Archived from the original on December 23, 2019. Retrieved November 20, 2018.
"StarChild: Dr. Carl Sagan". StarChild. NASA. Archived from the original on February 7, 2012. Retrieved October 8, 2009.
The Seth MacFarlane Collection of the Carl Sagan and Ann Druyan Archive: A Finding Aid to the Collection in the Library of Congress (PDF). Manuscript Division, Library of Congress. 2013. Archived (PDF) from the original on March 8, 2016. Retrieved January 17, 2016.
Lowensohn, Josh (February 4, 2014). "Massive Carl Sagan archive posted by Library of Congress". The Verge. Archived from the original on January 12, 2020. Retrieved January 16, 2016.
Dicke, William (December 21, 1996). "Carl Sagan, an Astronomer Who Excelled at Popularizing Science, Is Dead at 62". The New York Times. Archived from the original on August 19, 2017. Retrieved August 31, 2013.
"Carl Sagan". Internet Accuracy Project. Grandville, Michigan. Archived from the original on March 8, 2012. Retrieved August 22, 2012.
"Carl Sagan". The New York Times. Archived from the original on July 14, 2021. Retrieved May 7, 2021.
Sagan, Carl (May 28, 1978). "Growing up with Science Fiction". The New York Times. p. SM7. ISSN 0362-4331. Archived from the original on December 11, 2018. Retrieved December 12, 2018.
Davidson, Keay (2000). "Sagan, Carl (1934–1996), space scientist, author, science popularizer, TV personality, and antinuclear weapons activist". American National Biography. Oxford University Press. doi:10.1093/anb/9780198606697.article.1302612. ISBN 978-0-19-860669-7. Archived from the original on May 14, 2021. Retrieved June 23, 2021.
"Ryerson Astronomical Society". Ryerson Astronomical Society (RAS). University of Chicago Department of Astronomy and Astrophysics. Archived from the original on September 19, 2012. Retrieved August 22, 2012.
Sic. See Spangenburg, Ray; Moser, Kit; Moser, Diane (2004). Carl Sagan: A Biography (illustrated ed.). Greenwood Publishing Group. p. 28. ISBN 978-0-313-32265-5. Archived from the original on December 6, 2021. Retrieved August 31, 2018 – via Google Books.
"Graduate Students Receive First Sagan Teaching Awards". University of Chicago Chronicle. 13 (6). November 11, 1993. Archived from the original on March 10, 2012. Retrieved August 30, 2013.
Ulivi, Paolo (April 6, 2004). Lunar Exploration: Human Pioneers and Robotic Surveyors. Springer Science & Business Media. ISBN 978-1-85233-746-9. Archived from the original on January 1, 2014. Retrieved April 15, 2016 – via Google Books.
Morrison, David (January–February 2007). "Carl Sagan's Life and Legacy as Scientist, Teacher, and Skeptic". Skeptical Inquirer. 31 (1): 29–38. ISSN 0194-6730. Archived from the original on February 1, 2016. Retrieved August 31, 2013.
"Who's Out There? – Films – Drew Associates". Drew Associates. Archived from the original on March 14, 2024. Retrieved March 14, 2024.
"Happy (Belated) Birthday Carl!". University of California, Berkeley The Berkeley Science Review. November 11, 2013. Archived from the original on December 3, 2013. Retrieved December 1, 2013.
Sagan, Carl (1996). Demon-Haunted World: Science as a Candle in the Dark. Ballantine Books. p. 25. Archived from the original on October 3, 2022 – via Google Books.
Sagan, Carl; Head, Tom (2006). Conversations with Carl Sagan (illustrated ed.). Univ. Press of Mississippi. p. xxi. ISBN 978-1-57806-736-7. Extract of page xxi Archived December 23, 2019, at the Wayback Machine.
Sagan, Carl (January 5, 1995). "An Interview with Carl Sagan". Charlie Rose (Interview). PBS. Archived from the original on July 14, 2015. Retrieved August 30, 2013.
Pierrehumbert, Raymond T. (2010). Principles of Planetary Climate. Cambridge University Press. p. 202. ISBN 978-1-139-49506-6. Archived from the original on July 30, 2019. Retrieved March 20, 2016 – via Google Books. Extract of page 202 Archived December 19, 2019, at the Wayback Machine.
Much of Sagan's research in the field of planetary science is outlined by William Poundstone. Poundstone's biography of Sagan includes an 8-page list of Sagan's scientific articles published from 1957 to 1998. Detailed information about Sagan's scientific work comes from the primary research articles. Example: Sagan, C.; Thompson, W. R.; Khare, B. N. (1992). "Titan: A Laboratory for Prebiological Organic Chemistry". Accounts of Chemical Research. 25 (7): 286–292. doi:10.1021/ar00019a003. PMID 11537156. There is commentary on this research article about Titan at David J. Darling's The Encyclopedia of Science Archived March 10, 2005, at the Wayback Machine.
Chaisson, Eric; McMillan, Stephen (1997). Astronomy Today (illustrated ed.). Prentice Hall. p. 266. ISBN 978-0-13-712382-7. Archived from the original on March 15, 2021. Retrieved June 20, 2020 – via Google Books.
Carl Sagan testifying to Congress, December 10, 1985, C-SPAN, https://www.c-span.org/video/?125856-1/greenhouse-effect Archived December 25, 2021, at the Wayback Machine
"Sagan, Carl Edward". Columbia Encyclopedia (Sixth ed.). New York: Columbia University Press. May 2001. Archived from the original on October 11, 2007. Retrieved August 30, 2013.
No Writer Attributed (August 21, 1963). "Sagan Synthesizes ATP in Laboratory". The Harvard Crimson. Archived from the original on December 22, 2015. Retrieved September 12, 2015.
"Carl Sagan". Pasadena, CA: The Planetary Society. Archived from the original on February 21, 2015. Retrieved August 30, 2013.
Benford, Gregory (1997). "A Tribute to Carl Sagan: Popular & Pilloried". Skeptic. 13 (1). Archived from the original on April 16, 2011. Retrieved February 18, 2011.
Shermer, Michael (November 2, 2003). "Candle in the Dark". The Works of Michael Shermer. Michael Shermer. Archived from the original on September 27, 2009. Retrieved March 10, 2013. Article originally published in November 2003 issue of Scientific American.
Impey, Chris (January–February 2000). "Carl Sagan, Carl Sagan: Biographies Echo an Extraordinary Life". American Scientist (Book review). 88 (1). ISSN 0003-0996. Archived from the original on May 16, 2013. Retrieved March 10, 2013.
"Carl Sagan". EMuseum. Minnesota State University, Mankato. Archived from the original on May 28, 2010. Retrieved August 30, 2013.
Vergano, Dan (March 16, 2014). "Who Was Carl Sagan?". National Geographic Daily News. Washington, D.C.: National Geographic Society. Archived from the original on May 13, 2014. Retrieved May 13, 2014.
"Cosmos". Academy of Television Arts & Sciences. Archived from the original on March 25, 2014. Retrieved September 4, 2013.
Golden, Frederic (October 20, 1980). "The Cosmic Explainer". Time. Archived from the original on September 1, 2013. Retrieved August 30, 2013.
Frazier, Kendrick, ed. (July–August 2005). "Carl Sagan Takes Questions: More From His 'Wonder and Skepticism' CSICOP 1994 Keynote". Skeptical Inquirer. 29 (4). Archived from the original on December 21, 2016. Retrieved March 25, 2010.
24fpsfan (December 22, 2012). Carl Sagan (Cosmos) Parody by Johnny Carson (1980). Archived from the original on October 23, 2016. Retrieved November 4, 2016 – via YouTube.
Safire, William (April 17, 1994). "Footprints on the Infobahn". The New York Times. Archived from the original on November 13, 2013. Retrieved August 31, 2013.
Michon, Gerard. "Sizing up the Universe – Stars, Sand and Nucleons – Numericana". numericana.com. Archived from the original on April 11, 2020. Retrieved April 1, 2018.
"Star survey reaches 70 sextillion: And that's only the stars we can actually see". Sydney, Australia: CNN Science. July 23, 2003. Archived from the original on August 5, 2003. Retrieved October 27, 2014.
"STAR COUNT: ANU ASTRONOMER MAKES BEST YET". Sydney, Australia: Australian National University Media Releases. July 17, 2003. Archived from the original on March 9, 2011. Retrieved October 27, 2015.
"Number of Stars in the Universe Could Be 300 Sextillion, Triple The Amount Scientists Previously Thought: Study". HuffPost. December 1, 2010. Archived from the original on December 4, 2010. Retrieved September 3, 2016.
"Christmas Lectures 1977: The Planets : Ri Channel". Ri Channel. London: Royal Institution of Great Britain. Archived from the original on February 20, 2012. Retrieved February 7, 2012.
Turco, R. P.; Toon, O. B.; Ackerman, T. P.; Pollack, J. B.; Sagan, C. (January 12, 1990). "Climate and smoke: an appraisal of nuclear winter". Science. 247 (4939): 166–176. Bibcode:1990Sci...247..166T. CiteSeerX 10.1.1.584.8478. doi:10.1126/science.11538069. PMID 11538069. JSTOR Archived September 17, 2018, at the Wayback Machine link to full text article. Carl Sagan discussed his involvement in the political nuclear winter debates and his erroneous global cooling prediction for the Gulf War fires in his book The Demon-Haunted World.
"The U.S. National Security State and Scientists'Challenge to Nuclear Weapons during the Cold War. Paul Harold Rubinson 2008" (PDF). Archived from the original (PDF) on September 24, 2014.
"Meet Carl Sagan". The Science Channel. Discovery Communications. Archived from the original on May 18, 2007. Retrieved August 31, 2013.
"Pale Blue Dot Revisited". NASA. February 12, 2020. Archived from the original on February 12, 2020. Retrieved February 12, 2020.
Sagan, Carl. Recorded lecture at Cornell in 1994 Archived November 9, 2017, at the Wayback Machine, from Pale Blue Dot: A Vision of the Human Future in Space, Ballantine Books (reprint) (1997) p. 88.
"Baltimore Sun – We are currently unavailable in your region". January 23, 1991. Archived from the original on October 6, 2014. Retrieved October 3, 2014.
Wilmington morning Star Archived June 5, 2022, at the Wayback Machine. January 21, 1991.
Hirschmann, Kris. "The Kuwaiti Oil Fires". Facts on File. Archived from the original on January 2, 2014.
Sagan, Carl; Ostro, Steven J. (Summer 1994). "Long-Range Consequences of Interplanetary Collisions" (PDF). Issues in Science and Technology. 10 (4): 67–72. Bibcode:1994IST....10...67S. ISSN 0748-5492. Archived from the original (PDF) on December 3, 2013. Retrieved August 31, 2013.
"Chapter 18. The Marsh of Camarina – Pale Blue Dot: A Vision of the Human Future in Space". e-reading.club. Archived from the original on September 24, 2015. Retrieved September 1, 2015.
Morrison, David (October 3, 2007). "Taking a Hit: Asteroid Impacts & Evolution". Astronomical Society of the Pacific (Podcast). Astronomical Society of the Pacific. Archived from the original on August 18, 2014. Retrieved August 31, 2013.
Gault, Matthew (November 28, 2013). "When Earth Dreamed of Nuking the Moon". medium.com. War is Boring. Archived from the original on December 3, 2013. Retrieved November 28, 2013.
Palmer, Rob (March 31, 2020). "Exploring 'Possible Worlds' With Ann Druyan". Skepticalinquirer.org. CFI. Archived from the original on April 1, 2020. Retrieved April 17, 2020.
Rensberger, Boyce (May 29, 1977). "Carl Sagan: Obliged to Explain". The New York Times. Archived from the original on March 23, 2019. Retrieved March 23, 2019.
Druyan, Ann (November 2000). "A New Sense of the Sacred Carl Sagan's 'Cosmic Connection'". The Humanist. 60 (6). Archived from the original on October 3, 2022. Retrieved December 20, 2023.
How to Reduce the Risk of Nuclear Warfare: Carl Sagan on Space Exploration (1986). Archived from the original on July 11, 2015 – via YouTube.
Morris, Julian (2000). Rethinking Risk and the Precautionary Principle. Butterworth-Heinemann. p. 116. ISBN 978-0-08-051623-3. Archived from the original on December 20, 2019 – via Google Books..
Women On War Archived October 6, 2014, at the Wayback Machine, Daniela Gioseffi.
Brewster, Melanie E. (2014). Atheists in America (reprinted ed.). Columbia University Press. p. 102. ISBN 978-0-231-53700-1. Archived from the original on December 23, 2019. Retrieved February 28, 2016 – via Google Books..
Dear Uncle Ezra, archived from the original on June 6, 2013, retrieved August 16, 2016
Fahy, Declan (March 6, 2015). The New Celebrity Scientists: Out of the Lab and into the Limelight. Rowman & Littlefield. p. 4. ISBN 978-1-4422-3343-0. Archived from the original on October 3, 2022. Retrieved June 21, 2022 – via Google Books.
Linzmayer, Owen; Chaffin, Bryan (November 15, 2004). "This Week in Apple History: November 14–20: McIntosh, IIe Killed, Butt-Head Astronomer". The Mac Observer. The Mac Observer, Inc. Archived from the original on February 19, 2012. Retrieved July 23, 2012.
"Sasha Sagan on Making Jewish Rituals Meaningful for Secular Jews". Kveller. October 23, 2019. Archived from the original on November 6, 2019. Retrieved November 6, 2019.
"Carl Sagan". The Nebula Awards. Archived from the original on May 17, 2021. Retrieved May 17, 2021.
"Photo of Asimov and Sagan". Archived from the original on March 5, 2016. Retrieved November 4, 2016.
Treharne, Trevor (2012). How to Prove God Does Not Exist: The Complete Guide to Validating Atheism. Universal-Publishers. p. 200. ISBN 978-1-61233-118-8. Archived from the original on March 15, 2021. Retrieved May 10, 2020 – via Google Books.
Head 2006, p. 70 Archived September 21, 2014, at the Wayback Machine Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Sagan, Carl (1990). "Guest Comment: Preserving and cherishing the Earth—An appeal for joint commitment in science and religion". American Journal of Physics. 58 (7). American Association of Physics Teachers (AAPT): 615–617. Bibcode:1990AmJPh..58..615S. doi:10.1119/1.16418. ISSN 0002-9505. Archived from the original on January 26, 2021. Retrieved April 23, 2022.
Druyan, Ann (November–December 2003). "Ann Druyan Talks About Science, Religion, Wonder, Awe ... and Carl Sagan". Skeptical Inquirer. 27 (6). ISSN 0194-6730. Archived from the original on August 10, 2010. Retrieved July 27, 2010.
Rawson, Hugh (2008). "Sagan's Standard". The Unwritten Laws of Life. CSBC Ltd. Archived from the original on January 12, 2012. Retrieved September 1, 2013.
Truzzi, Marcello (1978). "On the Extraordinary: An Attempt at Clarification" (PDF). Zetetic Scholar. 1 (1): 11. Archived (PDF) from the original on April 11, 2019. Retrieved May 9, 2011.
Truzzi, Marcello (1998). Binkowski, Edward (ed.). "On Some Unfair Practices towards Claims of the Paranormal". Oxymoron: Annual Thematic Anthology of the Arts and Sciences. 2: The Fringe. ISSN 1090-2236. OCLC 35240974. Archived from the original on October 20, 2013. Retrieved September 1, 2013.
Flournoy, Théodore (1983) [Originally published 1899; Geneva: Édition Atar]. Des Indes à la Planète Mars: Étude sur un cas de Somnambulisme avec Glossolalie [From India to the Planet Mars: A Study of a Case of Somnambulism with Glossolalia] (in French). Introduction by Hélène Boursinhac; translation by Daniel B. Vermilye (Reprint ed.). Geneva: Éditions Slatkine. pp. 344–345. ISBN 978-2-05-100499-2. OCLC 11558608. Archived from the original on December 26, 2019. Retrieved February 24, 2018 – via Google Books.
Sagan, Carl. "Mr. X". Marijuana-Uses.com. Archived from the original on January 20, 2012. Retrieved August 7, 2009.
Whitehouse, David (October 15, 1999). "Carl Sagan: A life in the cosmos". BBC News. Archived from the original on July 25, 2014. Retrieved August 30, 2013.
Davidson, Keay (August 22, 1999). "Billions and Billions of '60s Flashbacks". The San Francisco Examiner. Archived from the original on June 13, 2010. Retrieved May 2, 2007.
Larsen, Dana (November 1, 1999). "Carl Sagan: toking astronomer". Cannabis Culture. Vancouver, B.C. Archived from the original on September 27, 2011. Retrieved May 2, 2007.
"Foundation Board of Directors". NORML.org. Washington, D.C.: NORML and the NORML Foundation. August 13, 2010. Archived from the original on January 4, 2011. Retrieved September 2, 2013.
"Ann Druyan". NORML.org. Washington, D.C.: NORML and the NORML Foundation. Archived from the original on December 13, 2007. Retrieved July 20, 2011.
Sagan, Carl (2000) [Originally published 1973]. "'Hello, Central Casting? Send Me Twenty Extraterrestrials'". Carl Sagan's Cosmic Connection: An Extraterrestrial Perspective. Produced by Jerome Agel; new contributions by Freeman Dyson, Ann Druyan, and David Morrison (2nd ed.). Cambridge; New York: Cambridge University Press. p. 183. ISBN 978-0-521-78303-3. LCCN 00020378. OCLC 460747781. Archived from the original on January 4, 2017. Retrieved February 28, 2016 – via Google Books.
Quarles, Norma (December 20, 1996). "Carl Sagan dies at 62". CNN. Archived from the original on March 11, 2010. Retrieved December 5, 2011. Sagan was a noted astronomer whose lifelong passion was searching for intelligent life in the cosmos.
"APS Fellow Archive". APS. Archived from the original on October 7, 2020. Retrieved October 5, 2020.
"From the AHA archives: Carl Sagan's 1981 Humanist of the year speech". americanhumanist.org. Archived from the original on December 26, 2014. Retrieved December 25, 2014.
"American Philosophical Society Member History". Philadelphia, PA: American Philosophical Society. Archived from the original on November 13, 2013. Retrieved September 3, 2013.
"John F. Kennedy Astronautics Award". Springfield, VA: American Astronautical Society. Archived from the original on September 19, 2013. Retrieved September 3, 2013.
"The John W. Campbell Memorial Award". Lawrence, KS: Center for the Study of Science Fiction. Archived from the original on December 29, 2012. Retrieved September 3, 2013.
"Carl Sagan – 1975". The Joseph Priestley Award. Dickinson University. Archived from the original on November 13, 2017. Retrieved February 1, 2017.
"Golden Plate Awardees of the American Academy of Achievement". achievement.org. American Academy of Achievement. Archived from the original on December 15, 2016. Retrieved May 21, 2020.
"Chapter 4 : The Space Age Begins" (PDF). History.nasa.gov. Archived (PDF) from the original on June 26, 2020. Retrieved March 1, 2019.
"Public Welfare Medal". Washington, D.C.: National Academy of Sciences. Archived from the original on August 9, 2013. Retrieved February 18, 2011.
"THE UCLA MEDAL RECIPIENTS, 1979 – PRESENT (ALPHABETICAL)" (PDF). Eventsprotocol.ucla.edu. Archived (PDF) from the original on April 11, 2019. Retrieved March 1, 2019.
"X-Prize Group Founder to Speak at Induction". El Paso Times. El Paso, Texas. October 17, 2004. p. 59. Archived from the original on December 23, 2019. Retrieved March 27, 2019 – via Newspapers.com.
"Greatest American". IMDb. Archived from the original on September 22, 2020. Retrieved September 2, 2019.
Mascarenhas, Rohan (May 3, 2009). "2009 New Jersey Hall of Fame inductees welcomed at NJPAC". The Star-Ledger. Newark, NJ. Archived from the original on November 5, 2013. Retrieved September 3, 2013.
"CSICOP becomes CSI after thirty years". Committee for Skeptical Inquiry. November 20, 2006. Archived from the original on August 15, 2009.
"The Pantheon of Skeptics". CSI. Committee for Skeptical Inquiry. Archived from the original on January 31, 2017. Retrieved April 30, 2017.
"Cidadãos Estrangeiros Agraciados com Ordens Portuguesas". Página Oficial das Ordens Honoríficas Portuguesas. Archived from the original on February 8, 2012. Retrieved March 20, 2019.
"Honorary Degrees". Whittier College. Archived from the original on September 10, 2018. Retrieved January 28, 2020.
"Fiction Book Review: Contact by Carl Sagan, Author Simon & Schuster $18.45 (0p)". Publishers Weekly. October 1985. ISBN 978-0-671-43400-7. Archived from the original on November 6, 2019. Retrieved November 6, 2019.
"Sagan Planet Walk". sciencenter.org. Ithaca, NY: Sciencenter. Archived from the original on February 5, 2013. Retrieved March 10, 2013.
"Sagan Award for Public Understanding of Science". Council of Scientific Society Presidents. Archived from the original on July 26, 2007. Retrieved May 2, 2007.
"The 2007 IIG Awards". IIG. Los Angeles: Independent Investigations Group. August 18, 2007. Archived from the original on July 18, 2011. Retrieved July 1, 2011.
"Two and a Half Questions with Benn Jordan". Headphone Commute. December 12, 2008. Archived from the original on December 11, 2019. Retrieved December 11, 2019.
"Pale Blue Dot, by Benn Jordan". Benn Jordan. Archived from the original on December 11, 2019. Retrieved December 11, 2019.
D'Orazio, Dante (November 30, 2014). "Wonderful short film imagines the day when we conquer the solar system". The Verge. Archived from the original on December 3, 2014. Retrieved February 19, 2016.
David, Leonard (December 1, 2014). "Epic Short Film 'Wanderers' Envisions Humanity's Future in Space". Space.com. Archived from the original on February 11, 2016. Retrieved February 21, 2016.
"Latest News – Nightwish – The Official Website". nightwish.com. Archived from the original on November 19, 2017. Retrieved February 9, 2015.
"WARNER BROS. HEADS TO THE COSMOS WITH CARL SAGAN BIOPIC" Archived August 18, 2015, at the Wayback Machine, Tracking Board, August 17, 2015
Frazier, Kendrick (January–February 2020). "It's the Carl Sagan & Ann Druyan Theater: A Gala Event in Los Angeles". Skeptical Inquirer. 44: 5. Archived from the original on March 2, 2020. Retrieved March 2, 2020.
"Future of Life Award". Future of Life Institute. Archived from the original on August 14, 2022. Retrieved August 23, 2022.

whittier.edu

"Honorary Degrees". Whittier College. Archived from the original on September 10, 2018. Retrieved January 28, 2020.

worldcat.org

search.worldcat.org

Davidson 1999, The book is dedicated to Pollack. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, pp. 363–364, 374–375. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Davidson 1999. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 12. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 2. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 9. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Spangenburg & Moser 2004, pp. 2–5. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Davidson 1999, p. 14. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 15. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 18. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl (May 28, 1978). "Growing up with Science Fiction". The New York Times. p. SM7. ISSN 0362-4331. Archived from the original on December 11, 2018. Retrieved December 12, 2018.
Davidson 1999, p. 23. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 24. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 25. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Poundstone 1999, p. 15. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, p. 14. Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Sagan, Carl (1960). Physical Studies of the Planets (PhD thesis). University of Chicago. p. ii. OCLC 20678107. ProQuest 301918122. A thesis in four parts submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Astronomy, University of Chicago, June, 1960
Head 2006, p. xxi. Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Spangenburg & Moser 2004, p. 28. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Morrison, David (January–February 2007). "Carl Sagan's Life and Legacy as Scientist, Teacher, and Skeptic". Skeptical Inquirer. 31 (1): 29–38. ISSN 0194-6730. Archived from the original on February 1, 2016. Retrieved August 31, 2013.
Reiffel, Leonard (May 4, 2000). "Sagan breached security by revealing US work on a lunar bomb project". Nature. 405 (13): Correspondence. doi:10.1038/35011148. ISSN 0028-0836. PMID 10811192.
Davidson 1999, p. 138. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 204. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 213. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl (1985) [Originally published 1980]. Cosmos (1st Ballantine Books ed.). New York: Ballantine Books. ISBN 978-0-345-33135-9. LCCN 80005286. OCLC 12814276.
Impey, Chris (January–February 2000). "Carl Sagan, Carl Sagan: Biographies Echo an Extraordinary Life". American Scientist (Book review). 88 (1). ISSN 0003-0996. Archived from the original on May 16, 2013. Retrieved March 10, 2013.
Sagan & Druyan 1997, pp. 3–4. ——; Druyan, Ann (1997). Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium (1st ed.). New York: Random House. ISBN 978-0-679-41160-4. LCCN 96052730. OCLC 36066119.
Shapiro, Fred R., ed. (2006). The Yale Book of Quotations. Foreword by Joseph Epstein. New Haven, CT: Yale University Press. p. 660. ISBN 978-0-300-10798-2. LCCN 2006012317. OCLC 66527213.
Sagan 1995, p. 257. —— (1995). The Demon-Haunted World: Science as a Candle in the Dark (1st ed.). New York: Random House. ISBN 978-0-394-53512-8. LCCN 95034076. OCLC 779687822. (Note: errata slip inserted.)
Head 2006, p. 86–87. Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Sagan, Carl; Ostro, Steven J. (Summer 1994). "Long-Range Consequences of Interplanetary Collisions" (PDF). Issues in Science and Technology. 10 (4): 67–72. Bibcode:1994IST....10...67S. ISSN 0748-5492. Archived from the original (PDF) on December 3, 2013. Retrieved August 31, 2013.
Davidson 1999, p. 202. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 227. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 341. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 203. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Davidson 1999, p. 297. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Spangenburg & Moser 2004, p. 106. Spangenburg, Ray; Moser, Kit (2004). Carl Sagan: A Biography. Westport, CT: Greenwood Publishing Group. ISBN 978-0-313-32265-5. LCCN 2004015176. OCLC 55846272.
Poundstone 1999, p. 364 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Poundstone 1999, pp. 374–375 Poundstone, William (1999). Carl Sagan: A Life in the Cosmos. New York: Henry Holt and Company. ISBN 978-0-8050-5766-9. LCCN 99014615. OCLC 40979822.
Asimov, Isaac (1981) [Originally published 1980; Garden City, NY: Doubleday]. In Joy Still Felt: The Autobiography of Isaac Asimov, 1954–1978. New York: Avon. pp. 217, 302. ISBN 978-0-380-53025-0. LCCN 79003685. OCLC 7880716.
Sagan, Carl (1980) [Originally published 1979]. Broca's Brain: Reflections on the Romance of Science (Reprint ed.). New York: Ballantine Books. p. 330. ISBN 978-0-345-33689-7. LCCN 78021810. OCLC 428008204.
Head 2006, p. 70 Archived September 21, 2014, at the Wayback Machine Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Sagan, Carl (1990). "Guest Comment: Preserving and cherishing the Earth—An appeal for joint commitment in science and religion". American Journal of Physics. 58 (7). American Association of Physics Teachers (AAPT): 615–617. Bibcode:1990AmJPh..58..615S. doi:10.1119/1.16418. ISSN 0002-9505. Archived from the original on January 26, 2021. Retrieved April 23, 2022.
Head, Tom (1997). "Conversations with Carl". Skeptic. 13 (1): 32–38. Excerpted in Head 2006 Head, Tom, ed. (2006). Conversations with Carl Sagan (1st ed.). Jackson, MS: University Press of Mississippi. ISBN 978-1-57806-736-7. LCCN 2005048747. OCLC 60375648.
Sagan, Carl (1997) [Originally published 1995]. The Demon-Haunted World: Science as a Candle in the Dark (1st Ballantine Books ed.). New York: Ballantine Books. p. 278. ISBN 978-0-345-40946-1. LCCN 95034076. OCLC 36504316.
Druyan, Ann (November–December 2003). "Ann Druyan Talks About Science, Religion, Wonder, Awe ... and Carl Sagan". Skeptical Inquirer. 27 (6). ISSN 0194-6730. Archived from the original on August 10, 2010. Retrieved July 27, 2010.
Truzzi, Marcello (1998). Binkowski, Edward (ed.). "On Some Unfair Practices towards Claims of the Paranormal". Oxymoron: Annual Thematic Anthology of the Arts and Sciences. 2: The Fringe. ISSN 1090-2236. OCLC 35240974. Archived from the original on October 20, 2013. Retrieved September 1, 2013.
Flournoy, Théodore (1983) [Originally published 1899; Geneva: Édition Atar]. Des Indes à la Planète Mars: Étude sur un cas de Somnambulisme avec Glossolalie [From India to the Planet Mars: A Study of a Case of Somnambulism with Glossolalia] (in French). Introduction by Hélène Boursinhac; translation by Daniel B. Vermilye (Reprint ed.). Geneva: Éditions Slatkine. pp. 344–345. ISBN 978-2-05-100499-2. OCLC 11558608. Archived from the original on December 26, 2019. Retrieved February 24, 2018 – via Google Books.
Grinspoon, Lester (1994) [2nd ed. published 1977; Cambridge, MA: Harvard University Press]. Marihuana Reconsidered. New introduction by author (2nd (reprint) ed.). Oakland, CA: Quick American Archives. ISBN 978-0-932551-13-9. LCCN 77076767. OCLC 32410025.
Davidson 1999, pp. 51–52. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Westrum, Ron (2000). "Limited Access: Six Natural Scientists and the UFO Phenomenon". In Jacobs, David M. (ed.). UFOs and Abductions: Challenging the Borders of Knowledge. Lawrence, KS: University Press of Kansas. pp. 31–55. ISBN 978-0-7006-1032-7. LCCN 00028970. OCLC 43615835.
Appelle, Stuart (2000). "Ufology and Academia: The UFO Phenomenon as a Scholarly Discipline". In Jacobs, David M. (ed.). UFOs and Abductions: Challenging the Borders of Knowledge. Lawrence, KS: University Press of Kansas. pp. 7–30. ISBN 978-0-7006-1032-7. LCCN 00028970. OCLC 43615835.
Sagan 1995, pp. 81–96, 99–104 —— (1995). The Demon-Haunted World: Science as a Candle in the Dark (1st ed.). New York: Random House. ISBN 978-0-394-53512-8. LCCN 95034076. OCLC 779687822. (Note: errata slip inserted.)
Davidson 1999, p. 168. Davidson, Keay (1999). Carl Sagan: A Life. New York: John Wiley & Sons. ISBN 978-0-471-25286-3. LCCN 99036206. OCLC 41580617.
Sagan, Carl (2000) [Originally published 1973]. "'Hello, Central Casting? Send Me Twenty Extraterrestrials'". Carl Sagan's Cosmic Connection: An Extraterrestrial Perspective. Produced by Jerome Agel; new contributions by Freeman Dyson, Ann Druyan, and David Morrison (2nd ed.). Cambridge; New York: Cambridge University Press. p. 183. ISBN 978-0-521-78303-3. LCCN 00020378. OCLC 460747781. Archived from the original on January 4, 2017. Retrieved February 28, 2016 – via Google Books.

youtube.com

Sagan, Carl (January 5, 1995). "An Interview with Carl Sagan". Charlie Rose (Interview). PBS. Archived from the original on July 14, 2015. Retrieved August 30, 2013.
24fpsfan (December 22, 2012). Carl Sagan (Cosmos) Parody by Johnny Carson (1980). Archived from the original on October 23, 2016. Retrieved November 4, 2016 – via YouTube.
Sagan, Carl. Recorded lecture at Cornell in 1994 Archived November 9, 2017, at the Wayback Machine, from Pale Blue Dot: A Vision of the Human Future in Space, Ballantine Books (reprint) (1997) p. 88.
How to Reduce the Risk of Nuclear Warfare: Carl Sagan on Space Exploration (1986). Archived from the original on July 11, 2015 – via YouTube.
"Ted Turner Asks Carl Sagan If He Is a Socialist". March 14, 2016. Archived from the original on November 24, 2021 – via YouTube.
Boswell, John (November 9, 2009). A Glorious Dawn (7-in (17.5 cm) gramophone record). Nashville, TN: Third Man Records. Archived from the original on November 24, 2021. Retrieved September 3, 2013.