Apollo program (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Apollo program" in English language version.

Last modified: 05:39:02, 4 September 2026 (UTC)

Ref.Un. Ref.Website

Global rank English rank

10084nasa.gov

12^th place

73^rd place

5043web.archive.org

1^st place

4038worldcat.org

4^th place

2221loc.gov

63^rd place

47^th place

1210ghostarchive.org

64^th place

28^th place

55archive.org

6^th place

54jfklibrary.org

4,935^th place

3,266^th place

44doi.org

2^nd place

44nytimes.com

7^th place

33astronautix.com

1,562^nd place

1,346^th place

33scribd.com

467^th place

428^th place

33usra.edu

1,836^th place

1,966^th place

32planetary.org

4,370^th place

4,136^th place

22si.edu

256^th place

197^th place

22en.wikisource.org

82^nd place

41^st place

22npr.org

114^th place

75^th place

22klabs.org

low place

22space.com

862^nd place

703^rd place

22adsabs.harvard.edu

14^th place

9^th place

21popsci.com

4,048^th place

2,846^th place

22nih.gov

5^th place

11wired.com

254^th place

178^th place

11jstor.org

23^rd place

15^th place

11spacedaily.com

8,383^rd place

7,001^st place

11measuringworth.com

3,470^th place

1,768^th place

11ucsb.edu

1,099^th place

630^th place

11archives.gov

319^th place

166^th place

11luizmonteiro.com

low place

11alternatewars.com

low place

11collectspace.com

7,708^th place

5,883^rd place

11time.com

84^th place

63^rd place

11snopes.com

1,669^th place

1,125^th place

11mit.edu

476^th place

340^th place

11hathitrust.org

296^th place

153^rd place

11nasaspaceflight.com

2,029^th place

1,519^th place

11jaxa.jp

3,149^th place

4,634^th place

11asu.edu

2,418^th place

1,574^th place

11economist.com

331^st place

272^nd place

11theguardian.com

16^th place

11^th place

11upi.com

377^th place

206^th place

11abc.net.au

120^th place

70^th place

11ew.com

59^th place

45^th place

11variety.com

21^st place

17^th place

11empireonline.com

496^th place

371^st place

11slate.com

409^th place

260^th place

abc.net.au (Global: 120^th place; English: 70^th place)

Goodsell, Luke (July 17, 2019). "Apollo 11 documentary is a time capsule for the fleeting optimism of mankind's first Moon landing". ABC. Retrieved September 5, 2019.

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

ui.adsabs.harvard.edu

Dreier, Casey (May 1, 2022). "An Improved Cost Analysis of the Apollo Program". Space Policy. 60 101476. Bibcode:2022SpPol..6001476D. doi:10.1016/j.spacepol.2022.101476. ISSN 0265-9646.
White, H. D.; Lokerson, D. C. (1971). "The Evolution of IMP Spacecraft Mosfet Data Systems". IEEE Transactions on Nuclear Science. 18 (1): 233–236. Bibcode:1971ITNS...18..233W. doi:10.1109/TNS.1971.4325871. ISSN 0018-9499.

alternatewars.com (Global: low place; English: low place)

Apollo Systems Description (PDF) (Technical Memorandum). Vol. II: Saturn Launch Vehicles. NASA. February 1, 1964. p. 3. NASA TM-X-881. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013.

archive.org (Global: 6^th place; English: 6^th place)

Sidey 1963, pp. 117–118 Sidey, Hugh (1963). John F. Kennedy, President (1st ed.). New York: Atheneum. LCCN 63007800. Retrieved August 1, 2013.
Sidey 1963, p. 114 Sidey, Hugh (1963). John F. Kennedy, President (1st ed.). New York: Atheneum. LCCN 63007800. Retrieved August 1, 2013.
Johnson 2002 Johnson, Stephen B. (2002). The Secret of Apollo: Systems Management in American and European Space Programs. New series in NASA history. Baltimore: Johns Hopkins University Press. ISBN 0-8018-6898-X. LCCN 2001005688. OCLC 48003131.
Letterman, John B. (2003). "Explosion on Apollo 13; April 1970: From the Earth to the Moon and Back". Survivors: True Tales of Endurance: 500 Years of the Greatest Eyewitness Accounts. New York: Simon & Schuster. p. 404. ISBN 0-7432-4547-4. Lovell writes, 'Naturally, I'm glad that view didn't prevail, and I'm thankful that by the time of Apollo 10, the first lunar mission carrying the LM, the LM as a lifeboat was again being discussed.'
Gray 1994 Gray, Mike (1994) [First published W. W. Norton & Company 1992]. Angle of Attack: Harrison Storms and the Race to the Moon. New York: Penguin Books. ISBN 0-14-023280-X. OCLC 30520885.

archives.gov (Global: 319^th place; English: 166^th place)

"Executive Orders Disposition Tables: Lyndon B. Johnson – 1963: Executive Order 11129". Office of the Federal Register. National Archives and Records Administration. Retrieved April 26, 2010.

astronautix.com (Global: 1,562^nd place; English: 1,346^th place)

Wade, Mark. "Apollo SA-11". Encyclopedia Astronautica. Archived from the original on June 17, 2012. Retrieved June 21, 2012.
"Apollo flight crew nomenclature changes". Astronautix. Archived from the original on February 1, 2010. Retrieved July 8, 2016.
"A1C". Astronautix. Archived from the original on August 20, 2016. Retrieved July 8, 2016.

asu.edu (Global: 2,418^th place; English: 1,574^th place)

lroc.sese.asu.edu

Robinson, Mark (July 27, 2012). "Question Answered!". LROC News System. Arizona State University. Archived from the original on October 24, 2012. Retrieved October 28, 2012.

collectspace.com (Global: 7,708^th place; English: 5,883^rd place)

Pearlman, Robert Z. (October 20, 2008). "First Apollo flight crew last to be honored". collectSPACE. Robert Pearlman. Retrieved June 12, 2014.

doi.org (Global: 2^nd place; English: 2^nd place)

Preble, Christopher A. (2003). ""Who Ever Believed in the 'Missile Gap'?": John F. Kennedy and the Politics of National Security". Presidential Studies Quarterly. 33 (4): 813. doi:10.1046/j.0360-4918.2003.00085.x. JSTOR 27552538.
Dreier, Casey (May 1, 2022). "An Improved Cost Analysis of the Apollo Program". Space Policy. 60 101476. Bibcode:2022SpPol..6001476D. doi:10.1016/j.spacepol.2022.101476. ISSN 0265-9646.
White, H. D.; Lokerson, D. C. (1971). "The Evolution of IMP Spacecraft Mosfet Data Systems". IEEE Transactions on Nuclear Science. 18 (1): 233–236. Bibcode:1971ITNS...18..233W. doi:10.1109/TNS.1971.4325871. ISSN 0018-9499.
Petsko, Gregory A (2011). "The blue marble". Genome Biology. 12 (4): 112. doi:10.1186/gb-2011-12-4-112. PMC 3218853. PMID 21554751.

economist.com (Global: 331^st place; English: 272^nd place)

Lexington, ed. (May 21, 2011). "Apollo plus 50". The Economist. London: The Economist Newspaper Limited. p. 36. Retrieved August 1, 2013.

empireonline.com (Global: 496^th place; English: 371^st place)

Travis, Ben (November 11, 2022). "Indiana Jones 5 Will Pit Indy Against Nazis Again, in 1969 – Exclusive". Empire. Retrieved December 24, 2022.

en.wikisource.org (Global: 82^nd place; English: 41^st place)

ew.com (Global: 59^th place; English: 45^th place)

Gleiberman, Owen (August 29, 2007). "Movie Review: In the Shadow of the Moon". Entertainment Weekly. Archived from the original on November 7, 2014. Retrieved September 5, 2019.

ghostarchive.org (Global: 64^th place; English: 28^th place)

Launius, Roger D. (July 1994). "President John F. Kennedy Memo for Vice President, 20 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 31825096. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013. Key Apollo Source Documents Archived November 8, 2020, at the Wayback Machine.
Launius, Roger D. (July 1994). "Lyndon B. Johnson, Vice President, Memo for the President, 'Evaluation of Space Program,' 28 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 31825096. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013. Key Apollo Source Documents Archived November 8, 2020, at the Wayback Machine.
"Apollo Program Summary Report" (PDF). Houston, TX: NASA. April 1975. pp. 3–66 to 4–12. JSC-09423. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013.
Townsend 1973, p. 14 Townsend, Neil A. (March 1973). Apollo Experience Report: Launch Escape Propulsion Subsystem (PDF). Washington, D.C.: NASA. NASA TN D-7083. Archived (PDF) from the original on October 9, 2022. Retrieved September 12, 2012.
Townsend 1973, p. 22 Townsend, Neil A. (March 1973). Apollo Experience Report: Launch Escape Propulsion Subsystem (PDF). Washington, D.C.: NASA. NASA TN D-7083. Archived (PDF) from the original on October 9, 2022. Retrieved September 12, 2012.
Apollo Systems Description (PDF) (Technical Memorandum). Vol. II: Saturn Launch Vehicles. NASA. February 1, 1964. p. 3. NASA TM-X-881. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013.
Lutz, Charles C.; Carson, Maurice A. (November 1975). "Apollo Experience Report – Development of the Extravehicular Mobility Unit" (PDF). NASA Technical Note. TN D-8093: 22–25. Archived (PDF) from the original on October 9, 2022. Retrieved May 18, 2016.
"Benefits from Apollo: Giant Leaps in Technology" (PDF). NASA. Archived (PDF) from the original on October 9, 2022.
Butler, P. M. (August 29, 1989). Interplanetary Monitoring Platform (PDF). NASA. pp. 1, 11, 134. Archived (PDF) from the original on October 9, 2022. Retrieved August 12, 2019.
Kenny, Glenn (February 27, 2019). "'Apollo 11' Review: The 1969 Moon Mission Still Has the Power to Thrill". The New York Times. Archived from the original on January 1, 2022. Retrieved February 28, 2019.

hathitrust.org (Global: 296^th place; English: 153^rd place)

catalog.hathitrust.org

1974 NASA authorization hearings, Ninety-third Congress, first session, on H.R. 4567 (superseded by H.R. 7528). Washington, D.C.: U.S. Govt. Print. Off. 1973.

jaxa.jp (Global: 3,149^th place; English: 4,634^th place)

"The 'halo' area around Apollo 15 landing site observed by Terrain Camera on SELENE(KAGUYA)" (Press release). Chōfu, Tokyo: Japan Aerospace Exploration Agency. May 20, 2008. Archived from the original on December 12, 2009. Retrieved November 19, 2009.

jfklibrary.org (Global: 4,935^th place; English: 3,266^th place)

Kennedy, John F. (April 20, 1961). "Memorandum for Vice President". The White House (Memorandum). Boston, MA: John F. Kennedy Presidential Library and Museum. Archived from the original on July 21, 2016. Retrieved August 1, 2013.
Johnson, Lyndon B. (April 28, 1961). "Memorandum for the President". Office of the Vice President (Memorandum). Boston, MA: John F. Kennedy Presidential Library and Museum. Archived from the original on July 1, 2016. Retrieved August 1, 2013.
Kennedy, John F. (May 25, 1961). Special Message to Congress on Urgent National Needs (Motion picture (excerpt)). Boston, MA: John F. Kennedy Presidential Library and Museum. Accession number: TNC:200; digital identifier: TNC-200-2. Retrieved August 1, 2013.
Kennedy, John F. (September 12, 1962). "Address at Rice University on the Nation's Space Effort". Boston, MA: John F. Kennedy Presidential Library and Museum. Archived from the original on May 6, 2010. Retrieved August 1, 2013.

jstor.org (Global: 23^rd place; English: 15^th place)

Preble, Christopher A. (2003). ""Who Ever Believed in the 'Missile Gap'?": John F. Kennedy and the Politics of National Security". Presidential Studies Quarterly. 33 (4): 813. doi:10.1046/j.0360-4918.2003.00085.x. JSTOR 27552538.

klabs.org (Global: low place; English: low place)

Townsend 1973, p. 14 Townsend, Neil A. (March 1973). Apollo Experience Report: Launch Escape Propulsion Subsystem (PDF). Washington, D.C.: NASA. NASA TN D-7083. Archived (PDF) from the original on October 9, 2022. Retrieved September 12, 2012.
Townsend 1973, p. 22 Townsend, Neil A. (March 1973). Apollo Experience Report: Launch Escape Propulsion Subsystem (PDF). Washington, D.C.: NASA. NASA TN D-7083. Archived (PDF) from the original on October 9, 2022. Retrieved September 12, 2012.

loc.gov (Global: 63^rd place; English: 47^th place)

lccn.loc.gov

Murray & Cox 1989, p. 55. Murray, Charles; Cox, Catherine Bly (1989). Apollo: The Race to the Moon. New York: Simon & Schuster. ISBN 0-671-61101-1. LCCN 89006333. OCLC 19589707.
Brooks, Grimwood & Swenson 1979, Ch. 1.7: "Feasility Studies". pp. 16–21. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Beschloss 1997 Beschloss, Michael R. (1997). "Kennedy and the Decision to Go to the Moon". In Launius, Roger D.; McCurdy, Howard E. (eds.). Spaceflight and the Myth of Presidential Leadership. Champaign, IL: University of Illinois Press. ISBN 0-252-06632-4. LCCN 96051213.
Sidey 1963, pp. 117–118 Sidey, Hugh (1963). John F. Kennedy, President (1st ed.). New York: Atheneum. LCCN 63007800. Retrieved August 1, 2013.
Beschloss 1997, p. 55 Beschloss, Michael R. (1997). "Kennedy and the Decision to Go to the Moon". In Launius, Roger D.; McCurdy, Howard E. (eds.). Spaceflight and the Myth of Presidential Leadership. Champaign, IL: University of Illinois Press. ISBN 0-252-06632-4. LCCN 96051213.
87th Congress 1961 Discussion of Soviet Man-in-space Shot (Hearing). Washington, D.C.: 87th Congress, first session. April 13, 1961. LCCN 61061306. OCLC 4052829.
Sidey 1963, p. 114 Sidey, Hugh (1963). John F. Kennedy, President (1st ed.). New York: Atheneum. LCCN 63007800. Retrieved August 1, 2013.
Murray & Cox 1989, pp. 16–17. Murray, Charles; Cox, Catherine Bly (1989). Apollo: The Race to the Moon. New York: Simon & Schuster. ISBN 0-671-61101-1. LCCN 89006333. OCLC 19589707.
Johnson 2002 Johnson, Stephen B. (2002). The Secret of Apollo: Systems Management in American and European Space Programs. New series in NASA history. Baltimore: Johns Hopkins University Press. ISBN 0-8018-6898-X. LCCN 2001005688. OCLC 48003131.
Brooks, Grimwood & Swenson 1979, Chapter 3.2: Early Reaction to LOR. pp. 61–67. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Brooks, Grimwood & Swenson 1979, Plans and Progress in Space Flight. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Benson, Charles D.; Faherty, William Barnaby (1978). "Delay after Delay after Delay". Moonport: A History of Apollo Launch Facilities and Operations. The NASA History Series. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 77029118. OCLC 3608505. NASA SP-4204. Archived from the original on January 23, 2008. Retrieved August 1, 2013.
Ertel et al. 1978, p. 119 Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.
Brooks, Grimwood & Swenson 1979, "The Slow Recovery" Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Ertel & al. 1978, Part 1(H) Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.
Ertel et al. 1978, p. 157 Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.
Low, George M. (1975). "Testing and Retesting To Get Ready For flight". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
Chaikin, Andrew (1994). A Man on the Moon: The Voyages of the Apollo Astronauts. New York: Viking. ISBN 978-0-670-81446-6. LCCN 93048680.
Conrad, Charles Jr.; Shepard, Alan B Jr. (1975). "Tan Dust On Surveyor". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
Papike et al. 1998, pp. 5-001–5-234 Papike, James J.; Ryder, Graham; Shearer, Charles K. (January 1998). "Planetary Materials: Lunar Samples". Reviews in Mineralogy and Geochemistry. 36 (1). Washington, D.C.: Mineralogical Society of America: 5.1 – 5.234. ISBN 0-939950-46-4. ISSN 0275-0279. LCCN 99474392.{{cite journal}}: CS1 maint: periodical has ISBN (link)
Brooks, Grimwood & Swenson 1979, pp. 181–182, 205–208. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.

luizmonteiro.com (Global: low place; English: low place)

"1976 Standard Atmosphere Properties". luizmonteiro.com (Complete International Standard Atmosphere calculator (1976 model)). Luizmonteiro, LLC. Retrieved August 1, 2013.

measuringworth.com (Global: 3,470^th place; English: 1,768^th place)

Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.

mit.edu (Global: 476^th place; English: 340^th place)

ocw.mit.edu

"MEMORANDUM FOR THE PRESIDENT" by Caspar Weinberger (via George Shultz), Aug 12, 1971, Page32(of 39)

nasa.gov (Global: 12^th place; English: 73^rd place)

history.nasa.gov

Swenson, Loyd S. Jr.; Grimwood, James M.; Alexander, Charles C. (1989) [Originally published 1966]. "Chapter 12.3: Space Task Group Gets a New Home and Name". This New Ocean: A History of Project Mercury. The NASA History Series. Washington, D.C.: NASA. OCLC 569889. NASA SP-4201. Archived from the original on July 13, 2009. Retrieved August 1, 2013.
Orloff, Richard W. (September 2004). Apollo by the Numbers: A Statistical Reference. Launch Vehicle/Spacecraft Key Facts – 2nd table. Washington DC: NASA History Division. ISBN 016-050631-X. Retrieved August 8, 2018.
Hansen 1999, p. 32 Hansen, James R. (1999). Enchanted Rendezvous: John C. Houbolt and the Genesis of the Lunar-Orbit Rendezvous Concept (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 69343822. Retrieved May 3, 2012.
Hansen 1999, pp. 35–39 Hansen, James R. (1999). Enchanted Rendezvous: John C. Houbolt and the Genesis of the Lunar-Orbit Rendezvous Concept (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 69343822. Retrieved May 3, 2012.
"2: The Lunar Landing Decision and Its Aftermath". Managing NASA in the Apollo Era. history.nasa.gov (Report). Retrieved February 12, 2023.
Hansen 1999, p. 42 Hansen, James R. (1999). Enchanted Rendezvous: John C. Houbolt and the Genesis of the Lunar-Orbit Rendezvous Concept (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 69343822. Retrieved May 3, 2012.
"Apollo Program Summary Report" (PDF). Houston, TX: NASA. April 1975. pp. 3–66 to 4–12. JSC-09423. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013.
"Aerospace Alphabet: ABMA, ARPA, MSFC". history.nasa.gov. Retrieved February 12, 2023.
"Missions, Modes, and Manufacturing". history.nasa.gov. Retrieved February 12, 2023.
"Apollo 11 30th Anniversary: Manned Apollo Missions". NASA History Office. 1999. Archived from the original on February 20, 2011. Retrieved March 3, 2011.
Dawson & Bowles 2004, p. 85. See footnote 61. Dawson, Virginia P.; Bowles, Mark D. (2004). Taming Liquid Hydrogen: The Centaur Upper Stage Rocket 1958–2002 (PDF). The NASA History Series. Washington D.C.: NASA. OCLC 51518552. NASA SP-2400-4320. Retrieved September 12, 2012.
"Influences on Booster Determination" (PDF). NASA HQ. pp. 44–46. Retrieved November 11, 2022.
"Origin of NASA's Names: Manned Spaceflight". Retrieved July 19, 2016.
"Launch Vehicle". history.nasa.gov. Retrieved February 12, 2023.
"Apollo 1: The Fire". history.nasa.gov. January 27, 1967. Retrieved February 12, 2023.
NASA never volunteered the tiger team findings to the US Congress in the course of its regular oversight, but its existence was publicly disclosed as "the Phillips report" in the course of the Senate investigation into the Apollo 204 fire. "The Phillips Report". NASA History Office. October 22, 2004. Archived from the original on April 15, 2010. Retrieved April 14, 2010.
"Extravehicular Activity". Retrieved June 11, 2016.
Conrad, Charles Jr.; Shepard, Alan B Jr. (1975). "Tan Dust On Surveyor". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
"Extravehicular Activity". history.nasa.gov. Retrieved February 12, 2023.
Compton, W. D.; Benson, C. D. (January 1983). "A Science Program for Manned Spaceflight". Retrieved June 11, 2016.
Compton, W. D.; Benson, C. D. (January 1983). "What Goes Up ..." Retrieved June 11, 2016.
"Legacy". history.nasa.gov. Retrieved February 12, 2023.
"Apollo 11 30th Anniversary: Introduction". NASA History Office. 1999. Retrieved April 26, 2013.

hq.nasa.gov

Brooks, Grimwood & Swenson 1979, Ch. 1.7: "Feasility Studies". pp. 16–21. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Launius, Roger D. (July 1994). "President John F. Kennedy Memo for Vice President, 20 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 31825096. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013. Key Apollo Source Documents Archived November 8, 2020, at the Wayback Machine.
Launius, Roger D. (July 1994). "Lyndon B. Johnson, Vice President, Memo for the President, 'Evaluation of Space Program,' 28 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 31825096. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013. Key Apollo Source Documents Archived November 8, 2020, at the Wayback Machine.
"Soyuz – Development of the Space Station; Apollo – Voyage to the Moon". Retrieved June 12, 2016.
Swenson, Loyd S. Jr.; Grimwood, James M.; Alexander, Charles C. (1989) [Originally published 1966]. "Chapter 12.3: Space Task Group Gets a New Home and Name". This New Ocean: A History of Project Mercury. The NASA History Series. Washington, D.C.: NASA. OCLC 569889. NASA SP-4201. Archived from the original on July 13, 2009. Retrieved August 1, 2013.
The building was renamed "Vehicle Assembly Building" on February 3, 1965. "VAB Nears Completion". NASA History Program Office. NASA. Archived from the original on April 28, 2015. Retrieved February 12, 2023. The new name, it was felt, would more readily encompass future as well as current programs and would not be tied to the Saturn booster.
Brooks, Grimwood & Swenson 1979, Chapter 3.2: Early Reaction to LOR. pp. 61–67. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
McDivitt, James A. (March 1970). Apollo 12 Mission Report (PDF). Houston, Texas: NASA Manned Spacecraft Center. p. 5–4.
McDivitt, James A. (April 1971). "7.0 Command and Service Module Performance". Apollo 14 Mission Report. Houston, Texas: NASA Manned Spacecraft Center. Retrieved May 19, 2016.
Brooks, Grimwood & Swenson 1979, Plans and Progress in Space Flight. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Lutz, Charles C.; Carson, Maurice A. (November 1975). "Apollo Experience Report – Development of the Extravehicular Mobility Unit" (PDF). NASA Technical Note. TN D-8093: 22–25. Archived (PDF) from the original on October 9, 2022. Retrieved May 18, 2016.
Benson, Charles D.; Faherty, William Barnaby (1978). "Delay after Delay after Delay". Moonport: A History of Apollo Launch Facilities and Operations. The NASA History Series. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 77029118. OCLC 3608505. NASA SP-4204. Archived from the original on January 23, 2008. Retrieved August 1, 2013.
Seamans, Robert C. Jr. (April 5, 1967). "Description of Test Sequence and Objectives". Report of Apollo 204 Review Board. NASA History Office. Retrieved October 7, 2007.
Seamans, Robert C. Jr. (April 5, 1967). "Findings, Determinations And Recommendations". Report of Apollo 204 Review Board. NASA History Office. Archived from the original on November 5, 2015. Retrieved October 7, 2007.
Brooks, Grimwood & Swenson 1979, "The Slow Recovery" Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Low, George M. (1975). "Testing and Retesting To Get Ready For flight". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
Jones, Eric. "That may have been a small one for Neil..." Apollo 12 Lunar Surface Journal. NASA. Retrieved February 5, 2018.
Conrad, Charles Jr.; Shepard, Alan B Jr. (1975). "Tan Dust On Surveyor". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
"Where No Man Has Gone Before, Ch12-4". www.hq.nasa.gov. Archived from the original on February 12, 2023. Retrieved February 12, 2023.
"Where No Man Has Gone Before, Ch11-7". www.hq.nasa.gov. Archived from the original on February 12, 2023. Retrieved February 12, 2023.
"Where No Man Has Gone Before, Ch12-2". www.hq.nasa.gov. Archived from the original on February 12, 2023. Retrieved February 12, 2023.
Brooks, Grimwood & Swenson 1979, pp. 181–182, 205–208. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.

nasa.gov

"NASA Adds Mission to Artemis Lunar Program, Updates Architecture". NASA. February 27, 2026. Retrieved April 27, 2026.
Kelsey, Charles E. (July 14, 1969). "1969 Apollo 11 News Release" (PDF) (Press release). Cleveland, OH: Lewis Research Center. 69-36. Archived (PDF) from the original on February 6, 2025. Retrieved April 8, 2025.
Allen, Bob (ed.). "NASA Langley Research Center's Contributions to the Apollo Program". Langley Research Center. NASA. Archived from the original on December 10, 2004. Retrieved August 1, 2013.
"Dr. Kurt H. Debus". Kennedy Biographies. NASA. February 1987. Retrieved October 7, 2008.
"Apollo by the Numbers" (PDF). nasa.gov. p. 276. Retrieved February 12, 2023.
"Apollo 13's Booster Impact". NASA. Retrieved June 16, 2016.
"Mission Objective". July 8, 2015. Retrieved July 8, 2016.
"Mission Objective". July 8, 2009. Retrieved July 8, 2016.
"Apollo 11 Mission Overview". NASA. April 17, 2015. Retrieved July 8, 2016.
"Apollo 14". NASA. July 8, 2009. Retrieved June 11, 2016.
"Apollo 15". NASA. July 8, 2009. Retrieved June 9, 2016.
"Apollo 16". NASA. July 8, 2009. Retrieved June 9, 2016.
"Apollo 17". NASA. July 30, 2015. Retrieved June 9, 2016.
Grinter, Kay (September 28, 2011). "Apollo 18' Myths Debunked, NASA-style". NASA. Retrieved June 10, 2016.
"Apollo 13". US: NASA. July 9, 2009. Retrieved November 7, 2019.
Kristen Erickson (July 16, 2009). Amiko Kauderer (ed.). "Rock Solid: JSC's Lunar Sample Lab Turns 30". 40th Anniversary of Apollo Program. NASA. Retrieved June 29, 2012.
"Apollo-Soyuz: An Orbital Partnership Begins". NASA. July 10, 2015. Retrieved July 19, 2016.
Hautaluoma, Grey; Freeberg, Andy (July 17, 2009). Garner, Robert (ed.). "LRO Sees Apollo Landing Sites". NASA. Archived from the original on November 16, 2009. Retrieved November 19, 2009.
Townsend, Jason (ed.). "Apollo Landing Sites Revisited". NASA. Archived from the original on November 13, 2009. Retrieved November 19, 2009.
"Benefits from Apollo: Giant Leaps in Technology" (PDF). NASA. Archived (PDF) from the original on October 9, 2022.
"Apollo 8: Christmas at the Moon". NASA. February 19, 2015. Retrieved July 20, 2016.

nssdc.gsfc.nasa.gov

"Apollo 12 Lunar Module / ALSEP". NASA Space Science Data Coordinate Archive. Retrieved June 15, 2016.
Williams, David R. "Apollo: Where are they now?". National Space Science Data Center. NASA. Retrieved December 2, 2011.
"Apollo 9". NASA Space Science Data Coordinated Archive. Retrieved July 8, 2016.
Williams, David (December 11, 2003). "Apollo 18 through 20 – The Cancelled Missions". NASA Space Science Data Coordinated Archive. Retrieved June 11, 2016.
"Apollo 14 Command and Service Module (CSM)". NASA Space Science Data Coordinated Archive. Retrieved June 11, 2016.

jsc.nasa.gov

Dethloff, Henry C. (1993). "Chapter 3: Houston – Texas – U.S.A.". Suddenly Tomorrow Came ... A History of the Johnson Space Center. National Aeronautics and Space Administration. ISBN 978-1502753588.
"Astronaut Bio: Deke Slayton 6/93". NASA. June 1993. Archived from the original on September 29, 2006. Retrieved August 1, 2013.
"Astronaut Bio: Harrison Schmitt". NASA. December 1994. Archived from the original on March 17, 2011. Retrieved September 12, 2012.

history.msfc.nasa.gov

"Historical Facts". MSFC History Office. Archived from the original on June 3, 2016. Retrieved June 7, 2016.
Wright, Mike. "Three Saturn Vs on Display Teach Lessons in Space History". Marshall Space Flight Center History Office. Archived from the original on November 15, 2005. Retrieved July 19, 2016.

ntrs.nasa.gov

Bilstein, Roger E. (January 1996). Stages to Saturn. National Aeronautics and Space Administration, NASA History Office. p. 443. ISBN 978-0-16-048909-9. SP-4206. Retrieved February 12, 2023.
Butler, P. M. (August 29, 1989). Interplanetary Monitoring Platform (PDF). NASA. pp. 1, 11, 134. Archived (PDF) from the original on October 9, 2022. Retrieved August 12, 2019.

science.ksc.nasa.gov

Dumoulin, Jim (June 29, 2001). "Apollo-13 (29)". Historical Archive for Manned Missions. NASA. Archived from the original on August 19, 2011. Retrieved September 12, 2012.
Butts, Glenn; Linton, Kent (April 28, 2009). "The Joint Confidence Level Paradox: A History of Denial" (PDF). 2009 NASA Cost Symposium. Cost Analysis Division. pp. 25–26. Archived from the original (PDF) on October 26, 2011. Retrieved December 15, 2021.

kscpartnerships.ksc.nasa.gov

Craig, Kay (ed.). "KSC Technical Capabilities: O&C Altitude Chambers". Center Planning and Development Office. NASA. Archived from the original on March 28, 2012. Retrieved July 29, 2011.

er.jsc.nasa.gov

"Apollo 10". NASA JSC. Retrieved July 8, 2016.

curator.jsc.nasa.gov

"NASA Lunar Sample Laboatory Facility". NASA Curation Lunar. NASA. September 1, 2016. Retrieved February 15, 2017. A total of 382 kilograms of lunar material, comprising 2200 individual specimens returned from the Moon ...

spinoff.nasa.gov

"Search". NASA Spinoff. National Aeronautics and Space Administration. Retrieved April 24, 2024.

nasaspaceflight.com (Global: 2,029^th place; English: 1,519^th place)

forum.nasaspaceflight.com

"Manned Venus Flyby". NASA. February 1, 1967. Retrieved July 19, 2016.

nih.gov (Global: 5^th place; English: 5^th place)

ncbi.nlm.nih.gov

Petsko, Gregory A (2011). "The blue marble". Genome Biology. 12 (4): 112. doi:10.1186/gb-2011-12-4-112. PMC 3218853. PMID 21554751.

pubmed.ncbi.nlm.nih.gov

Petsko, Gregory A (2011). "The blue marble". Genome Biology. 12 (4): 112. doi:10.1186/gb-2011-12-4-112. PMC 3218853. PMID 21554751.

npr.org (Global: 114^th place; English: 75^th place)

Davies, Dave (June 12, 2019). "'One Giant Leap' Explores The Herculean Effort Behind The 1969 Moon Landing". NPR. US. Retrieved July 5, 2023.
Greenfieldboyce, Nell (July 16, 2009). "Houston, We Erased The Apollo 11 Tapes". NPR. Washington, D.C.: National Public Radio, Inc. Retrieved August 1, 2013.

nytimes.com (Global: 7^th place; English: 7^th place)

Narvaez, Alfonso A. (February 1, 1990). "Samuel C. Phillips, Who Directed Apollo Lunar Landing, Dies at 68". The New York Times. Retrieved April 14, 2010.
Leary, Warren E. (March 27, 2002). "T. J. Kelly, 72, Dies; Father of Lunar Module". The New York Times. Retrieved August 1, 2013.
"The Human Moon". The New York Times. November 16, 2009. Archived from the original on December 31, 2012. Retrieved November 19, 2009.
Kenny, Glenn (February 27, 2019). "'Apollo 11' Review: The 1969 Moon Mission Still Has the Power to Thrill". The New York Times. Archived from the original on January 1, 2022. Retrieved February 28, 2019.

planetary.org (Global: 4,370^th place; English: 4,136^th place)

"How much did the Apollo program cost?". The Planetary Society. Archived from the original on April 1, 2025. Retrieved March 25, 2024.
Callahan, Jason. "How Richard Nixon Changed NASA". planetary.org. The Planetary Society. Retrieved June 20, 2019.

popsci.com (Global: 4,048^th place; English: 2,846^th place)

Teitel, Amy Shira (December 4, 2013) [2013]. "How Donn Eisele Became "Whatshisname," the Command Module Pilot of Apollo 7". Popular Science.

scribd.com (Global: 467^th place; English: 428^th place)

"Saturn IB Design Features". Saturn IB News Reference (PDF). NASA; Chrysler Corporation; McDonnell Douglas Astronautics Company; International Business Machines Corporation; Rocketdyne. December 1965. OCLC 22102803. Retrieved August 1, 2013.
Postlaunch Report for Mission AS-201 (Apollo Spacecraft 009) (PDF). Houston, TX: NASA. May 6, 1966. MSC-A-R-66-4. Retrieved August 1, 2013.
Postlaunch Report for Mission AS-202 (Apollo Spacecraft 011) (PDF). Houston, TX: NASA. October 12, 1966. MSC-A-R-66-5. Retrieved August 1, 2013.

si.edu (Global: 256^th place; English: 197^th place)

airandspace.si.edu

"Apollo 11 Moon Landing Stories". National Air and Space Museum. February 25, 2021. Retrieved March 10, 2026.
"Apollo Guidance Computer and the First Silicon Chips". National Air and Space Museum. Smithsonian Institution. October 14, 2015. Retrieved September 1, 2019.

slate.com (Global: 409^th place; English: 260^th place)

Plait, Phil (October 29, 2015). "You Have 60 Seconds to Get to the Moon and Back. Go". Slate Magazine. Retrieved May 5, 2026.

snopes.com (Global: 1,669^th place; English: 1,125^th place)

Mikkelson, Barbara; Mikkelson, David P. (October 2006). "One Small Misstep: Neil Armstrong's First Words on the Moon". Snopes.com. Urban Legends Reference Pages. Retrieved September 19, 2009.

space.com (Global: 862^nd place; English: 703^rd place)

Howell, Elizabeth (April 23, 2013). "Harrison Schmitt: Geologist on the Moon". Space.com. Retrieved June 10, 2016.
O'Rangers, Eleanor A. (January 26, 2005). "NASA Spin-offs: Bringing Space Down to Earth". Space.com. Retrieved April 23, 2024.

spacedaily.com (Global: 8,383^rd place; English: 7,001^st place)

Sietzen, Frank (October 2, 1997). "Soviets Planned to Accept JFK's Joint Lunar Mission Offer". SpaceDaily. SpaceCast News Service. Archived from the original on March 15, 2026. Retrieved April 19, 2026.

theguardian.com (Global: 16^th place; English: 11^th place)

Jones, Sam (May 25, 2009). "The moon shoot: film of Apollo mission on show again after 35 years in the can". The Guardian. Retrieved September 5, 2019.

time.com (Global: 84^th place; English: 63^rd place)

"Poised for the Leap". Time. New York. December 6, 1968. Archived from the original on July 13, 2015. Retrieved December 15, 2011.

ucsb.edu (Global: 1,099^th place; English: 630^th place)

presidency.ucsb.edu

Nixon, Richard M. (February 19, 1973). "50—Statement About Signing a Bill Designating the Manned Spacecraft Center in Houston, Texas, as the Lyndon B. Johnson Space Center". The American Presidency Project. University of California, Santa Barbara. Retrieved July 9, 2011.

upi.com (Global: 377^th place; English: 206^th place)

Hastings, Julianne (August 13, 1984). "TV World;NEWLN:Race to moon reviewed with NASA film on PBS". UPI. Retrieved May 2, 2023.

usra.edu (Global: 1,836^th place; English: 1,966^th place)

lpi.usra.edu

Ertel et al. 1978, p. 119 Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.
Ertel & al. 1978, Part 1(H) Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.
Ertel et al. 1978, p. 157 Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.

variety.com (Global: 21^st place; English: 17^th place)

Rubin, Rebecca (February 13, 2019). "'Apollo 11' Documentary Gets Exclusive Imax Release". Variety. Retrieved July 20, 2019.

web.archive.org (Global: 1^st place; English: 1^st place)

"How much did the Apollo program cost?". The Planetary Society. Archived from the original on April 1, 2025. Retrieved March 25, 2024.
Kelsey, Charles E. (July 14, 1969). "1969 Apollo 11 News Release" (PDF) (Press release). Cleveland, OH: Lewis Research Center. 69-36. Archived (PDF) from the original on February 6, 2025. Retrieved April 8, 2025.
Portree, David S. F. (September 2, 2013). "Project Olympus (1962)". Wired. Archived from the original on March 23, 2025. Retrieved October 12, 2023.
Brooks, Grimwood & Swenson 1979, Ch. 1.7: "Feasility Studies". pp. 16–21. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Kennedy, John F. (April 20, 1961). "Memorandum for Vice President". The White House (Memorandum). Boston, MA: John F. Kennedy Presidential Library and Museum. Archived from the original on July 21, 2016. Retrieved August 1, 2013.
Launius, Roger D. (July 1994). "President John F. Kennedy Memo for Vice President, 20 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 31825096. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013. Key Apollo Source Documents Archived November 8, 2020, at the Wayback Machine.
Johnson, Lyndon B. (April 28, 1961). "Memorandum for the President". Office of the Vice President (Memorandum). Boston, MA: John F. Kennedy Presidential Library and Museum. Archived from the original on July 1, 2016. Retrieved August 1, 2013.
Launius, Roger D. (July 1994). "Lyndon B. Johnson, Vice President, Memo for the President, 'Evaluation of Space Program,' 28 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 31825096. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013. Key Apollo Source Documents Archived November 8, 2020, at the Wayback Machine.
Sietzen, Frank (October 2, 1997). "Soviets Planned to Accept JFK's Joint Lunar Mission Offer". SpaceDaily. SpaceCast News Service. Archived from the original on March 15, 2026. Retrieved April 19, 2026.
Allen, Bob (ed.). "NASA Langley Research Center's Contributions to the Apollo Program". Langley Research Center. NASA. Archived from the original on December 10, 2004. Retrieved August 1, 2013.
"Historical Facts". MSFC History Office. Archived from the original on June 3, 2016. Retrieved June 7, 2016.
Swenson, Loyd S. Jr.; Grimwood, James M.; Alexander, Charles C. (1989) [Originally published 1966]. "Chapter 12.3: Space Task Group Gets a New Home and Name". This New Ocean: A History of Project Mercury. The NASA History Series. Washington, D.C.: NASA. OCLC 569889. NASA SP-4201. Archived from the original on July 13, 2009. Retrieved August 1, 2013.
Kennedy, John F. (September 12, 1962). "Address at Rice University on the Nation's Space Effort". Boston, MA: John F. Kennedy Presidential Library and Museum. Archived from the original on May 6, 2010. Retrieved August 1, 2013.
The building was renamed "Vehicle Assembly Building" on February 3, 1965. "VAB Nears Completion". NASA History Program Office. NASA. Archived from the original on April 28, 2015. Retrieved February 12, 2023. The new name, it was felt, would more readily encompass future as well as current programs and would not be tied to the Saturn booster.
Craig, Kay (ed.). "KSC Technical Capabilities: O&C Altitude Chambers". Center Planning and Development Office. NASA. Archived from the original on March 28, 2012. Retrieved July 29, 2011.
Brooks, Grimwood & Swenson 1979, Chapter 3.2: Early Reaction to LOR. pp. 61–67. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Dumoulin, Jim (June 29, 2001). "Apollo-13 (29)". Historical Archive for Manned Missions. NASA. Archived from the original on August 19, 2011. Retrieved September 12, 2012.
"Apollo 11 30th Anniversary: Manned Apollo Missions". NASA History Office. 1999. Archived from the original on February 20, 2011. Retrieved March 3, 2011.
Wade, Mark. "Apollo SA-11". Encyclopedia Astronautica. Archived from the original on June 17, 2012. Retrieved June 21, 2012.
"Astronaut Bio: Deke Slayton 6/93". NASA. June 1993. Archived from the original on September 29, 2006. Retrieved August 1, 2013.
"Astronaut Bio: Harrison Schmitt". NASA. December 1994. Archived from the original on March 17, 2011. Retrieved September 12, 2012.
"Apollo flight crew nomenclature changes". Astronautix. Archived from the original on February 1, 2010. Retrieved July 8, 2016.
"A1C". Astronautix. Archived from the original on August 20, 2016. Retrieved July 8, 2016.
Brooks, Grimwood & Swenson 1979, Plans and Progress in Space Flight. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Benson, Charles D.; Faherty, William Barnaby (1978). "Delay after Delay after Delay". Moonport: A History of Apollo Launch Facilities and Operations. The NASA History Series. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 77029118. OCLC 3608505. NASA SP-4204. Archived from the original on January 23, 2008. Retrieved August 1, 2013.
NASA never volunteered the tiger team findings to the US Congress in the course of its regular oversight, but its existence was publicly disclosed as "the Phillips report" in the course of the Senate investigation into the Apollo 204 fire. "The Phillips Report". NASA History Office. October 22, 2004. Archived from the original on April 15, 2010. Retrieved April 14, 2010.
Seamans, Robert C. Jr. (April 5, 1967). "Findings, Determinations And Recommendations". Report of Apollo 204 Review Board. NASA History Office. Archived from the original on November 5, 2015. Retrieved October 7, 2007.
Brooks, Grimwood & Swenson 1979, "The Slow Recovery" Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Low, George M. (1975). "Testing and Retesting To Get Ready For flight". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
"Poised for the Leap". Time. New York. December 6, 1968. Archived from the original on July 13, 2015. Retrieved December 15, 2011.
Conrad, Charles Jr.; Shepard, Alan B Jr. (1975). "Tan Dust On Surveyor". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
"Where No Man Has Gone Before, Ch12-4". www.hq.nasa.gov. Archived from the original on February 12, 2023. Retrieved February 12, 2023.
"Where No Man Has Gone Before, Ch11-7". www.hq.nasa.gov. Archived from the original on February 12, 2023. Retrieved February 12, 2023.
"Where No Man Has Gone Before, Ch12-2". www.hq.nasa.gov. Archived from the original on February 12, 2023. Retrieved February 12, 2023.
Wright, Mike. "Three Saturn Vs on Display Teach Lessons in Space History". Marshall Space Flight Center History Office. Archived from the original on November 15, 2005. Retrieved July 19, 2016.
Butts, Glenn; Linton, Kent (April 28, 2009). "The Joint Confidence Level Paradox: A History of Denial" (PDF). 2009 NASA Cost Symposium. Cost Analysis Division. pp. 25–26. Archived from the original (PDF) on October 26, 2011. Retrieved December 15, 2021.
"The 'halo' area around Apollo 15 landing site observed by Terrain Camera on SELENE(KAGUYA)" (Press release). Chōfu, Tokyo: Japan Aerospace Exploration Agency. May 20, 2008. Archived from the original on December 12, 2009. Retrieved November 19, 2009.
Hautaluoma, Grey; Freeberg, Andy (July 17, 2009). Garner, Robert (ed.). "LRO Sees Apollo Landing Sites". NASA. Archived from the original on November 16, 2009. Retrieved November 19, 2009.
Townsend, Jason (ed.). "Apollo Landing Sites Revisited". NASA. Archived from the original on November 13, 2009. Retrieved November 19, 2009.
Robinson, Mark (July 27, 2012). "Question Answered!". LROC News System. Arizona State University. Archived from the original on October 24, 2012. Retrieved October 28, 2012.
"The Human Moon". The New York Times. November 16, 2009. Archived from the original on December 31, 2012. Retrieved November 19, 2009.
Brooks, Grimwood & Swenson 1979, pp. 181–182, 205–208. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Gleiberman, Owen (August 29, 2007). "Movie Review: In the Shadow of the Moon". Entertainment Weekly. Archived from the original on November 7, 2014. Retrieved September 5, 2019.

wired.com (Global: 254^th place; English: 178^th place)

Portree, David S. F. (September 2, 2013). "Project Olympus (1962)". Wired. Archived from the original on March 23, 2025. Retrieved October 12, 2023.

worldcat.org (Global: 4^th place; English: 4^th place)

search.worldcat.org

Murray & Cox 1989, p. 55. Murray, Charles; Cox, Catherine Bly (1989). Apollo: The Race to the Moon. New York: Simon & Schuster. ISBN 0-671-61101-1. LCCN 89006333. OCLC 19589707.
Brooks, Grimwood & Swenson 1979, Ch. 1.7: "Feasility Studies". pp. 16–21. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
87th Congress 1961 Discussion of Soviet Man-in-space Shot (Hearing). Washington, D.C.: 87th Congress, first session. April 13, 1961. LCCN 61061306. OCLC 4052829.
Launius, Roger D. (July 1994). "President John F. Kennedy Memo for Vice President, 20 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 31825096. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013. Key Apollo Source Documents Archived November 8, 2020, at the Wayback Machine.
Launius, Roger D. (July 1994). "Lyndon B. Johnson, Vice President, Memo for the President, 'Evaluation of Space Program,' 28 April 1961" (PDF). Apollo: A Retrospective Analysis (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 31825096. Archived (PDF) from the original on October 9, 2022. Retrieved August 1, 2013. Key Apollo Source Documents Archived November 8, 2020, at the Wayback Machine.
Murray & Cox 1989, pp. 16–17. Murray, Charles; Cox, Catherine Bly (1989). Apollo: The Race to the Moon. New York: Simon & Schuster. ISBN 0-671-61101-1. LCCN 89006333. OCLC 19589707.
Swenson, Loyd S. Jr.; Grimwood, James M.; Alexander, Charles C. (1989) [Originally published 1966]. "Chapter 12.3: Space Task Group Gets a New Home and Name". This New Ocean: A History of Project Mercury. The NASA History Series. Washington, D.C.: NASA. OCLC 569889. NASA SP-4201. Archived from the original on July 13, 2009. Retrieved August 1, 2013.
Johnson 2002 Johnson, Stephen B. (2002). The Secret of Apollo: Systems Management in American and European Space Programs. New series in NASA history. Baltimore: Johns Hopkins University Press. ISBN 0-8018-6898-X. LCCN 2001005688. OCLC 48003131.
Brooks, Grimwood & Swenson 1979, Chapter 3.2: Early Reaction to LOR. pp. 61–67. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Hansen 1999, p. 32 Hansen, James R. (1999). Enchanted Rendezvous: John C. Houbolt and the Genesis of the Lunar-Orbit Rendezvous Concept (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 69343822. Retrieved May 3, 2012.
Hansen 1999, pp. 35–39 Hansen, James R. (1999). Enchanted Rendezvous: John C. Houbolt and the Genesis of the Lunar-Orbit Rendezvous Concept (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 69343822. Retrieved May 3, 2012.
Hansen 1999, p. 42 Hansen, James R. (1999). Enchanted Rendezvous: John C. Houbolt and the Genesis of the Lunar-Orbit Rendezvous Concept (PDF). Monographs in Aerospace History. Washington, D.C.: NASA. OCLC 69343822. Retrieved May 3, 2012.
Wilford 1969, p. 167 Wilford, John Noble (1969). We Reach the Moon: The New York Times Story of Man's Greatest Adventure. New York: Bantam Paperbacks. OCLC 29123.
Dawson & Bowles 2004, p. 85. See footnote 61. Dawson, Virginia P.; Bowles, Mark D. (2004). Taming Liquid Hydrogen: The Centaur Upper Stage Rocket 1958–2002 (PDF). The NASA History Series. Washington D.C.: NASA. OCLC 51518552. NASA SP-2400-4320. Retrieved September 12, 2012.
"Saturn IB Design Features". Saturn IB News Reference (PDF). NASA; Chrysler Corporation; McDonnell Douglas Astronautics Company; International Business Machines Corporation; Rocketdyne. December 1965. OCLC 22102803. Retrieved August 1, 2013.
Brooks, Grimwood & Swenson 1979, Plans and Progress in Space Flight. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Benson, Charles D.; Faherty, William Barnaby (1978). "Delay after Delay after Delay". Moonport: A History of Apollo Launch Facilities and Operations. The NASA History Series. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 77029118. OCLC 3608505. NASA SP-4204. Archived from the original on January 23, 2008. Retrieved August 1, 2013.
Gray 1994 Gray, Mike (1994) [First published W. W. Norton & Company 1992]. Angle of Attack: Harrison Storms and the Race to the Moon. New York: Penguin Books. ISBN 0-14-023280-X. OCLC 30520885.
Ertel et al. 1978, p. 119 Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.
Brooks, Grimwood & Swenson 1979, "The Slow Recovery" Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
Ertel & al. 1978, Part 1(H) Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.
Ertel et al. 1978, p. 157 Ertel, Ivan D.; Newkirk, Roland W.; et al. (1978). The Apollo Spacecraft: A Chronology (PDF). Vol. IV. Foreword by Kenneth S. Kleinknecht. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 69060008. OCLC 23818. NASA SP-4009. Retrieved August 1, 2013.
Low, George M. (1975). "Testing and Retesting To Get Ready For flight". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
Conrad, Charles Jr.; Shepard, Alan B Jr. (1975). "Tan Dust On Surveyor". In Cortright, Edgar M (ed.). Apollo Expeditions to the Moon. Washington, D.C.: Scientific and Technical Information Office, NASA. LCCN 75600071. OCLC 1623434. NASA SP-350. Archived from the original on February 19, 2008. Retrieved August 1, 2013.
Papike et al. 1998, pp. 5-001–5-234 Papike, James J.; Ryder, Graham; Shearer, Charles K. (January 1998). "Planetary Materials: Lunar Samples". Reviews in Mineralogy and Geochemistry. 36 (1). Washington, D.C.: Mineralogical Society of America: 5.1 – 5.234. ISBN 0-939950-46-4. ISSN 0275-0279. LCCN 99474392.{{cite journal}}: CS1 maint: periodical has ISBN (link)
Harland 2008, pp. 132–133. Harland, David M. (2008). Exploring the Moon: the Apollo Expeditions. Springer-Praxis books in space exploration. Chichester, England: Springer. ISBN 9780387746388. OCLC 495296214.
Harland 2008, p. 171. Harland, David M. (2008). Exploring the Moon: the Apollo Expeditions. Springer-Praxis books in space exploration. Chichester, England: Springer. ISBN 9780387746388. OCLC 495296214.
Harland 2008, pp. 49–50. Harland, David M. (2008). Exploring the Moon: the Apollo Expeditions. Springer-Praxis books in space exploration. Chichester, England: Springer. ISBN 9780387746388. OCLC 495296214.
Harland 2008, pp. 323–327. Harland, David M. (2008). Exploring the Moon: the Apollo Expeditions. Springer-Praxis books in space exploration. Chichester, England: Springer. ISBN 9780387746388. OCLC 495296214.
Harland 2008, pp. 330–332. Harland, David M. (2008). Exploring the Moon: the Apollo Expeditions. Springer-Praxis books in space exploration. Chichester, England: Springer. ISBN 9780387746388. OCLC 495296214.
Burrows 1999, p. 431 Burrows, William E. (1999). This New Ocean: The Story of the First Space Age. New York: Modern Library. ISBN 0-375-75485-7. OCLC 42136309.
Dreier, Casey (May 1, 2022). "An Improved Cost Analysis of the Apollo Program". Space Policy. 60 101476. Bibcode:2022SpPol..6001476D. doi:10.1016/j.spacepol.2022.101476. ISSN 0265-9646.
Skolnikoff, Eugene B.; Hoagland, John H. (1968). The World-wide Spread of Space Technology. 69-5. Cambridge, MA: MIT Center for Space Research. OCLC 14154430.
Mindell 2008, pp. 125–131. Mindell, David A. (2008). Digital Apollo: Human and Machine in Spaceflight. Cambridge, Massachusetts: The MIT Press. ISBN 978-0-262-13497-2. OCLC 733307011.
Brooks, Grimwood & Swenson 1979, pp. 181–182, 205–208. Brooks, Courtney G.; Grimwood, James M.; Swenson, Loyd S. Jr. (1979). Chariots for Apollo: A History of Manned Lunar Spacecraft. The NASA History Series. Foreword by Samuel C. Phillips. Washington, D.C.: Scientific and Technical Information Branch, NASA. ISBN 978-0-486-46756-6. LCCN 79001042. OCLC 4664449. NASA SP-4205. Archived from the original on October 20, 2015. Retrieved August 1, 2013.
White, H. D.; Lokerson, D. C. (1971). "The Evolution of IMP Spacecraft Mosfet Data Systems". IEEE Transactions on Nuclear Science. 18 (1): 233–236. Bibcode:1971ITNS...18..233W. doi:10.1109/TNS.1971.4325871. ISSN 0018-9499.
Chaikin 1994, p. 120 Chaikin, Andrew (1994). A Man on the Moon. New York: Penguin Books. ISBN 0-14-027201-1. OCLC 38918860. Chaikin interviewed all the surviving astronauts and others who worked with the program.
Burrows 1999, p. 429 Burrows, William E. (1999). This New Ocean: The Story of the First Space Age. New York: Modern Library. ISBN 0-375-75485-7. OCLC 42136309.

Apollo program (English Wikipedia)

abc.net.au (Global: 120th place; English: 70th place)

adsabs.harvard.edu (Global: 14th place; English: 9th place)

ui.adsabs.harvard.edu

alternatewars.com (Global: low place; English: low place)

archive.org (Global: 6th place; English: 6th place)

archives.gov (Global: 319th place; English: 166th place)

astronautix.com (Global: 1,562nd place; English: 1,346th place)

asu.edu (Global: 2,418th place; English: 1,574th place)

lroc.sese.asu.edu

collectspace.com (Global: 7,708th place; English: 5,883rd place)

doi.org (Global: 2nd place; English: 2nd place)

economist.com (Global: 331st place; English: 272nd place)

empireonline.com (Global: 496th place; English: 371st place)

en.wikisource.org (Global: 82nd place; English: 41st place)

ew.com (Global: 59th place; English: 45th place)

ghostarchive.org (Global: 64th place; English: 28th place)

hathitrust.org (Global: 296th place; English: 153rd place)

catalog.hathitrust.org

jaxa.jp (Global: 3,149th place; English: 4,634th place)

jfklibrary.org (Global: 4,935th place; English: 3,266th place)

jstor.org (Global: 23rd place; English: 15th place)

klabs.org (Global: low place; English: low place)

loc.gov (Global: 63rd place; English: 47th place)

lccn.loc.gov

luizmonteiro.com (Global: low place; English: low place)

measuringworth.com (Global: 3,470th place; English: 1,768th place)

mit.edu (Global: 476th place; English: 340th place)

ocw.mit.edu

nasa.gov (Global: 12th place; English: 73rd place)

history.nasa.gov

hq.nasa.gov

nasa.gov

nssdc.gsfc.nasa.gov

jsc.nasa.gov

history.msfc.nasa.gov

ntrs.nasa.gov

science.ksc.nasa.gov

kscpartnerships.ksc.nasa.gov

er.jsc.nasa.gov

curator.jsc.nasa.gov

spinoff.nasa.gov

nasaspaceflight.com (Global: 2,029th place; English: 1,519th place)

forum.nasaspaceflight.com

nih.gov (Global: 5th place; English: 5th place)

ncbi.nlm.nih.gov

pubmed.ncbi.nlm.nih.gov

npr.org (Global: 114th place; English: 75th place)

nytimes.com (Global: 7th place; English: 7th place)

planetary.org (Global: 4,370th place; English: 4,136th place)

popsci.com (Global: 4,048th place; English: 2,846th place)

scribd.com (Global: 467th place; English: 428th place)

si.edu (Global: 256th place; English: 197th place)

airandspace.si.edu

slate.com (Global: 409th place; English: 260th place)

snopes.com (Global: 1,669th place; English: 1,125th place)

space.com (Global: 862nd place; English: 703rd place)

spacedaily.com (Global: 8,383rd place; English: 7,001st place)

theguardian.com (Global: 16th place; English: 11th place)

time.com (Global: 84th place; English: 63rd place)

ucsb.edu (Global: 1,099th place; English: 630th place)

presidency.ucsb.edu

upi.com (Global: 377th place; English: 206th place)

usra.edu (Global: 1,836th place; English: 1,966th place)

lpi.usra.edu

variety.com (Global: 21st place; English: 17th place)

web.archive.org (Global: 1st place; English: 1st place)

wired.com (Global: 254th place; English: 178th place)

worldcat.org (Global: 4th place; English: 4th place)

search.worldcat.org

abc.net.au (Global: 120^th place; English: 70^th place)

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

archive.org (Global: 6^th place; English: 6^th place)

archives.gov (Global: 319^th place; English: 166^th place)

astronautix.com (Global: 1,562^nd place; English: 1,346^th place)

asu.edu (Global: 2,418^th place; English: 1,574^th place)

collectspace.com (Global: 7,708^th place; English: 5,883^rd place)

doi.org (Global: 2^nd place; English: 2^nd place)

economist.com (Global: 331^st place; English: 272^nd place)

empireonline.com (Global: 496^th place; English: 371^st place)

en.wikisource.org (Global: 82^nd place; English: 41^st place)

ew.com (Global: 59^th place; English: 45^th place)

ghostarchive.org (Global: 64^th place; English: 28^th place)

hathitrust.org (Global: 296^th place; English: 153^rd place)

jaxa.jp (Global: 3,149^th place; English: 4,634^th place)

jfklibrary.org (Global: 4,935^th place; English: 3,266^th place)

jstor.org (Global: 23^rd place; English: 15^th place)

loc.gov (Global: 63^rd place; English: 47^th place)

measuringworth.com (Global: 3,470^th place; English: 1,768^th place)

mit.edu (Global: 476^th place; English: 340^th place)

nasa.gov (Global: 12^th place; English: 73^rd place)

nasaspaceflight.com (Global: 2,029^th place; English: 1,519^th place)

nih.gov (Global: 5^th place; English: 5^th place)

npr.org (Global: 114^th place; English: 75^th place)

nytimes.com (Global: 7^th place; English: 7^th place)

planetary.org (Global: 4,370^th place; English: 4,136^th place)

popsci.com (Global: 4,048^th place; English: 2,846^th place)

scribd.com (Global: 467^th place; English: 428^th place)

si.edu (Global: 256^th place; English: 197^th place)

slate.com (Global: 409^th place; English: 260^th place)

snopes.com (Global: 1,669^th place; English: 1,125^th place)

space.com (Global: 862^nd place; English: 703^rd place)

spacedaily.com (Global: 8,383^rd place; English: 7,001^st place)

theguardian.com (Global: 16^th place; English: 11^th place)

time.com (Global: 84^th place; English: 63^rd place)

ucsb.edu (Global: 1,099^th place; English: 630^th place)

upi.com (Global: 377^th place; English: 206^th place)

usra.edu (Global: 1,836^th place; English: 1,966^th place)

variety.com (Global: 21^st place; English: 17^th place)

web.archive.org (Global: 1^st place; English: 1^st place)

wired.com (Global: 254^th place; English: 178^th place)

worldcat.org (Global: 4^th place; English: 4^th place)