Space Shuttle (English Wikipedia)

Woodcock, Gordon R. (1986). Space stations and platforms. Orbit Book co. ISBN 978-0-89464-001-8. Retrieved April 17, 2012. The present limit on Shuttle landing payload is 14,400 kg (31,700 lb). This value applies to payloads intended for landing.

books.google.com (Global: 3^rd place; English: 3^rd place)

Sivolella, David (2017). The Space Shuttle Program: Technologies and Accomplishments. Hemel Hempstead: Springer Praxis Books. doi:10.1007/978-3-319-54946-0. ISBN 978-3-319-54944-6. Archived from the original on April 17, 2021. Retrieved October 17, 2020.
Chaikin, Andrew (2007). A Man on the Moon: The Voyages of the Apollo Astronauts. Penguin Group. ISBN 978-0-14-311235-8. Archived from the original on April 17, 2021. Retrieved October 17, 2020.

braeunig.us (Global: low place; English: low place)

"Inertial Upper Stage". Rocket and Space Technology. November 2017. Archived from the original on August 7, 2020. Retrieved June 21, 2020.

century-of-flight.net (Global: low place; English: low place)

"The Columbia Accident". Century of Flight. Archived from the original on September 26, 2007. Retrieved May 28, 2019.

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

"Joe Davies Heritage Airpark". City of Palmdale. Archived from the original on August 7, 2020. Retrieved June 18, 2020.

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

"NASA's Artemis I mission to launch using space shuttle-used parts". CollectSpace.com. Archived from the original on August 31, 2022. Retrieved March 15, 2025.

computerhistory.org (Global: 2,702^nd place; English: 1,789^th place)

The Computer History Museum (2006). "Pioneering the Laptop: Engineering the GRiD Compass". The Computer History Museum. Archived from the original on December 4, 2007. Retrieved October 25, 2007.

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

Sivolella, David (2017). The Space Shuttle Program: Technologies and Accomplishments. Hemel Hempstead: Springer Praxis Books. doi:10.1007/978-3-319-54946-0. ISBN 978-3-319-54944-6. Archived from the original on April 17, 2021. Retrieved October 17, 2020.

ieee.org (Global: 912^th place; English: 722^nd place)

spectrum.ieee.org

Bell, Trudy; Esch, Karl (January 28, 2016). "The Challenger Disaster: A Case of Subjective Engineering". IEEE Spectrum. IEEE. Archived from the original on May 29, 2019. Retrieved June 18, 2020.

latimes.com (Global: 32^nd place; English: 21^st place)

Campa, Andrew J. (October 17, 2024). "'This is where it all happened.' Downey's space shuttle prototype begins move to future home". Los Angeles Times. Retrieved January 19, 2025.

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

nasa.gov

Bray, Nancy (August 3, 2017). "Kennedy Space Center FAQ". NASA. Archived from the original on November 2, 2019. Retrieved July 13, 2022.
"Space Shuttle Era Facts" (PDF). NASA. Retrieved June 24, 2025.
Dunbar, Brian (March 5, 2006). "Solid Rocket Boosters". NASA. Archived from the original on April 6, 2013. Retrieved July 19, 2021.
"The Space Shuttle's First Flight: STS-1".
Smith, Yvette (June 1, 2020). "Demo-2: Launching Into History". NASA. Archived from the original on February 21, 2021. Retrieved February 18, 2021.
Allen, Bob (August 7, 2017). "Maxime A. Faget". NASA. Archived from the original on December 19, 2019. Retrieved April 24, 2019.
Mansfield, Cheryl L. (July 15, 2008). "Catching a Ride to Destiny". NASA. Archived from the original on June 9, 2009. Retrieved June 18, 2020.
"The NASA Railroad" (PDF). NASA. 2007. Archived (PDF) from the original on August 7, 2020. Retrieved June 18, 2020.
Diller, George (May 20, 1999). "Space Shuttle weather launch commit criteria and KSC end of mission weather landing criteria". Kennedy Space Center (KSC). KSC Release No. 39-99. NASA. Archived from the original on August 7, 2020. Retrieved May 1, 2020.
"NASA's Launch Blog – Mission STS-121". NASA. July 1, 2006. Archived from the original on May 24, 2017. Retrieved May 1, 2020.
Ryba, Jeanne (November 23, 2007). "Sound Suppression System". NASA. Archived from the original on June 29, 2011. Retrieved March 22, 2020.
Ryba, Jeanne (September 17, 2009). "Countdown 101". NASA. Archived from the original on January 26, 2020. Retrieved March 22, 2020.
Roy, Steve (November 2008). "Space Shuttle Solid Rocket Booster" (PDF). NASA. Archived (PDF) from the original on November 13, 2018. Retrieved March 22, 2020.
"Shuttle Crew Operations Manual" (PDF). NASA. Archived (PDF) from the original on December 16, 2017. Retrieved May 4, 2018.
Finch, Josh; Schierholz, Stephanie; Herring, Kyle; Lewis, Marie; Huot, Dan; Dean, Brandi (May 31, 2020). "NASA Astronauts Launch from America in Historic Test Flight of SpaceX Crew Dragon". Release 20-057. NASA. Archived from the original on August 20, 2020. Retrieved June 10, 2020.
"The Vision for Space Exploration" (PDF). NASA. February 2004. Archived (PDF) from the original on January 11, 2012. Retrieved July 6, 2020.
Harbaugh, Jennifer A. (February 3, 2022). "Fired Up: Engines and Motors Put Artemis Mission in Motion". NASA. Retrieved March 15, 2025.
"SLS (Space Launch System) Solid Rocket Booster". NASA. July 25, 2024. Retrieved March 15, 2025.

science.ksc.nasa.gov

Dumoulin, Jim (August 31, 2000). "Space Transportation System". NASA. Archived from the original on February 5, 2021. Retrieved June 21, 2020.
Dumoulin, Jim (August 31, 2000). "NASA Centers And Responsibilities". NASA. Archived from the original on June 21, 2020. Retrieved March 22, 2020.
"Crawler-Transporter". NASA. April 21, 2003. Archived from the original on June 1, 2020. Retrieved June 18, 2020.
Dumoulin, Jim (August 31, 2000). "Solid Rocket Boosters". NASA. Archived from the original on February 16, 2012. Retrieved March 22, 2020.
Rogers, William P.; Armstrong, Neil A.; Acheson, David C.; Covert, Eugene E.; Feynman, Richard P.; Hotz, Robert B.; Kutyna, Donald J.; Ride, Sally K; Rummel, Robert W.; Sutter, Joseph F.; Walker, Arthur B.C.; Wheelon, Albert D.; Yeager, Charles E. (June 6, 1986). "Report of the Presidential Commission on the Space Shuttle Challenger Accident" (PDF). NASA. Archived (PDF) from the original on July 13, 2021. Retrieved July 13, 2021.
Feynman, Richard (June 6, 1986). "Appendix F – Personal observations on the reliability of the Shuttle". Report of the Presidential Commission on the Space Shuttle Challenger Accident. NASA. Archived from the original on August 7, 2020. Retrieved June 18, 2020.

history.nasa.gov

Williamson, Ray (1999). "Developing the Space Shuttle" (PDF). Exploring the Unknown: Selected Documents in the History of the U.S. Civil Space Program, Volume IV: Accessing Space. Washington, D.C.: NASA. Archived (PDF) from the original on May 31, 2020. Retrieved April 23, 2019.
"NASA Columbia Master Timeline". NASA. March 10, 2003. Archived from the original on December 25, 2017. Retrieved May 28, 2019.
Bush, George W. (January 14, 2004). "President Bush Announces New Vision for Space Exploration Program". NASA. Archived from the original on October 18, 2004. Retrieved July 6, 2020.

ntrs.nasa.gov

Reed, R. Dale (January 1, 1997). Wingless Flight: The Lifting Body Story (PDF). NASA. ISBN 9780160493904. Archived (PDF) from the original on December 18, 2014. Retrieved April 25, 2019.
Klinar, W.J.; Kubiak, E.T.; Peters, W.H.; Saldana, R.L.; Smith, E.E.; Stegall, H.W. (August 1975). Space Shuttle Flight Control System. 6th IFAC World Congress. Boston/Cambridge, MA. Paper 6.2.

www-pao.ksc.nasa.gov

Grinter, Kay (August 28, 2000). "Sound Suppression Water System". NASA. Archived from the original on March 13, 2014. Retrieved April 9, 2020.
"From Landing to Launch Orbiter Processing" (PDF). NASA. 2002. Archived from the original (PDF) on July 21, 2011. Retrieved June 30, 2011.

hq.nasa.gov

Launius, Roger D. (1969). "Space Task Group Report, 1969". NASA. Archived from the original on January 14, 2016. Retrieved March 22, 2020.

science.nasa.gov

Dooling, Dave (March 15, 1999). "Spacelab joined diverse scientists and disciplines on 28 Shuttle missions". NASA. Archived from the original on December 24, 2018. Retrieved April 23, 2020.

lsda.jsc.nasa.gov

Chowdhury, Abul (October 10, 2018). "Crew Transport Vehicle". NASA. Archived from the original on August 7, 2020. Retrieved June 18, 2020.

spaceflight.nasa.gov

"Columbia Accident Investigation Board" (PDF). NASA. August 2003. Archived from the original (PDF) on November 9, 2004. Retrieved June 18, 2020.

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

Bergin, Chris (February 19, 2007). "NASA solves YERO problem for Shuttle". NASASpaceflight.com. Archived from the original on April 18, 2008. Retrieved December 22, 2007.

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

Flatow, Ira; Hamlin, Teri; Canga, Mike (March 4, 2011). "Earlier Space Shuttle Flights Riskier Than Estimated". Talk of the Nation. NPR. Archived from the original on August 8, 2020. Retrieved June 18, 2020.

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

Chang, Kenneth (May 30, 2020). "SpaceX Lifts NASA Astronauts to Orbit, Launching New Era of Spaceflight". The New York Times. Archived from the original on August 10, 2020. Retrieved July 5, 2020.

pbs.org (Global: 260^th place; English: 176^th place)

"Lost LA season 7, episode 1: Space Shuttle". PBS. January 7, 2025. Retrieved January 19, 2025.

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

Lindroos, Marcus (June 15, 2001). "Introduction to Future Launch Vehicle Plans [1963–2001]". Pmview.com. Archived from the original on July 17, 2019. Retrieved April 25, 2019.

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

Malik, Tarik (July 21, 2011). "NASA's Space Shuttle By the Numbers: 30 Years of a Spaceflight Icon". Space.com. Archived from the original on October 16, 2015. Retrieved June 18, 2014.
Wall, Mike (June 28, 2011). "How the Space Shuttle Was Born". Space.com. Archived from the original on March 30, 2023. Retrieved March 30, 2023.
Howell, Elizabeth (October 9, 2012). "Enterprise: The Test Shuttle". Space.com. Archived from the original on August 6, 2020. Retrieved April 24, 2019.

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

Lethbridge, Cliff. "SPACE SHUTTLE". Spaceline.org. Archived from the original on March 31, 2023. Retrieved March 31, 2023.
"Space Shuttle Astronaut Qualifications | Spaceline". Archived from the original on March 24, 2023. Retrieved April 1, 2023.

storage.googleapis.com (Global: 4,648^th place; English: 2,969^th place)

patentimages.storage.googleapis.com

United States 3,702,688, Maxime A. Faget, "Space Shuttle Vehicle and System", published November 14, 1972 Archived April 24, 2019, at the Wayback Machine

thoughtco.com (Global: 2,170^th place; English: 1,937^th place)

Oblack, Rachelle (March 5, 2018). "The Anvil Rule: How NASA Keeps Its Shuttles Safe form Thunderstorms". Thoughtco.com. Archived from the original on June 8, 2020. Retrieved September 17, 2018.

typepad.com (Global: 1,805^th place; English: 1,102^nd place)

aviationweek.typepad.com

Griffin, Michael D. (March 14, 2007). "Human Space Exploration: The Next 50 Years". Aviation Week. Archived from the original on August 7, 2020. Retrieved June 15, 2020.

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

Bray, Nancy (August 3, 2017). "Kennedy Space Center FAQ". NASA. Archived from the original on November 2, 2019. Retrieved July 13, 2022.
"Inertial Upper Stage". Rocket and Space Technology. November 2017. Archived from the original on August 7, 2020. Retrieved June 21, 2020.
Dunbar, Brian (March 5, 2006). "Solid Rocket Boosters". NASA. Archived from the original on April 6, 2013. Retrieved July 19, 2021.
Kyle, Ed. "STS Data Sheet". spacelaunchreport.com. Archived from the original on August 7, 2020. Retrieved May 4, 2018.
Williamson, Ray (1999). "Developing the Space Shuttle" (PDF). Exploring the Unknown: Selected Documents in the History of the U.S. Civil Space Program, Volume IV: Accessing Space. Washington, D.C.: NASA. Archived (PDF) from the original on May 31, 2020. Retrieved April 23, 2019.
Launius, Roger D. (1969). "Space Task Group Report, 1969". NASA. Archived from the original on January 14, 2016. Retrieved March 22, 2020.
Malik, Tarik (July 21, 2011). "NASA's Space Shuttle By the Numbers: 30 Years of a Spaceflight Icon". Space.com. Archived from the original on October 16, 2015. Retrieved June 18, 2014.
Smith, Yvette (June 1, 2020). "Demo-2: Launching Into History". NASA. Archived from the original on February 21, 2021. Retrieved February 18, 2021.
Wall, Mike (June 28, 2011). "How the Space Shuttle Was Born". Space.com. Archived from the original on March 30, 2023. Retrieved March 30, 2023.
Reed, R. Dale (January 1, 1997). Wingless Flight: The Lifting Body Story (PDF). NASA. ISBN 9780160493904. Archived (PDF) from the original on December 18, 2014. Retrieved April 25, 2019.
Lindroos, Marcus (June 15, 2001). "Introduction to Future Launch Vehicle Plans [1963–2001]". Pmview.com. Archived from the original on July 17, 2019. Retrieved April 25, 2019.
Allen, Bob (August 7, 2017). "Maxime A. Faget". NASA. Archived from the original on December 19, 2019. Retrieved April 24, 2019.
United States 3,702,688, Maxime A. Faget, "Space Shuttle Vehicle and System", published November 14, 1972 Archived April 24, 2019, at the Wayback Machine
Lethbridge, Cliff. "SPACE SHUTTLE". Spaceline.org. Archived from the original on March 31, 2023. Retrieved March 31, 2023.
Howell, Elizabeth (October 9, 2012). "Enterprise: The Test Shuttle". Space.com. Archived from the original on August 6, 2020. Retrieved April 24, 2019.
Dumoulin, Jim (August 31, 2000). "Space Transportation System". NASA. Archived from the original on February 5, 2021. Retrieved June 21, 2020.
Sivolella, David (2017). The Space Shuttle Program: Technologies and Accomplishments. Hemel Hempstead: Springer Praxis Books. doi:10.1007/978-3-319-54946-0. ISBN 978-3-319-54944-6. Archived from the original on April 17, 2021. Retrieved October 17, 2020.
Dumoulin, Jim (August 31, 2000). "NASA Centers And Responsibilities". NASA. Archived from the original on June 21, 2020. Retrieved March 22, 2020.
"Space Shuttle Astronaut Qualifications | Spaceline". Archived from the original on March 24, 2023. Retrieved April 1, 2023.
Bergin, Chris (February 19, 2007). "NASA solves YERO problem for Shuttle". NASASpaceflight.com. Archived from the original on April 18, 2008. Retrieved December 22, 2007.
The Computer History Museum (2006). "Pioneering the Laptop: Engineering the GRiD Compass". The Computer History Museum. Archived from the original on December 4, 2007. Retrieved October 25, 2007.
Dooling, Dave (March 15, 1999). "Spacelab joined diverse scientists and disciplines on 28 Shuttle missions". NASA. Archived from the original on December 24, 2018. Retrieved April 23, 2020.
"Crawler-Transporter". NASA. April 21, 2003. Archived from the original on June 1, 2020. Retrieved June 18, 2020.
"Joe Davies Heritage Airpark". City of Palmdale. Archived from the original on August 7, 2020. Retrieved June 18, 2020.
Chowdhury, Abul (October 10, 2018). "Crew Transport Vehicle". NASA. Archived from the original on August 7, 2020. Retrieved June 18, 2020.
Mansfield, Cheryl L. (July 15, 2008). "Catching a Ride to Destiny". NASA. Archived from the original on June 9, 2009. Retrieved June 18, 2020.
"The NASA Railroad" (PDF). NASA. 2007. Archived (PDF) from the original on August 7, 2020. Retrieved June 18, 2020.
Diller, George (May 20, 1999). "Space Shuttle weather launch commit criteria and KSC end of mission weather landing criteria". Kennedy Space Center (KSC). KSC Release No. 39-99. NASA. Archived from the original on August 7, 2020. Retrieved May 1, 2020.
Chaikin, Andrew (2007). A Man on the Moon: The Voyages of the Apollo Astronauts. Penguin Group. ISBN 978-0-14-311235-8. Archived from the original on April 17, 2021. Retrieved October 17, 2020.
Oblack, Rachelle (March 5, 2018). "The Anvil Rule: How NASA Keeps Its Shuttles Safe form Thunderstorms". Thoughtco.com. Archived from the original on June 8, 2020. Retrieved September 17, 2018.
"NASA's Launch Blog – Mission STS-121". NASA. July 1, 2006. Archived from the original on May 24, 2017. Retrieved May 1, 2020.
Ryba, Jeanne (November 23, 2007). "Sound Suppression System". NASA. Archived from the original on June 29, 2011. Retrieved March 22, 2020.
Grinter, Kay (August 28, 2000). "Sound Suppression Water System". NASA. Archived from the original on March 13, 2014. Retrieved April 9, 2020.
Ryba, Jeanne (September 17, 2009). "Countdown 101". NASA. Archived from the original on January 26, 2020. Retrieved March 22, 2020.
Roy, Steve (November 2008). "Space Shuttle Solid Rocket Booster" (PDF). NASA. Archived (PDF) from the original on November 13, 2018. Retrieved March 22, 2020.
Dumoulin, Jim (August 31, 2000). "Solid Rocket Boosters". NASA. Archived from the original on February 16, 2012. Retrieved March 22, 2020.
"Shuttle Crew Operations Manual" (PDF). NASA. Archived (PDF) from the original on December 16, 2017. Retrieved May 4, 2018.
Space Shuttle Reentry In-depth, July 25, 2020, archived from the original on January 18, 2023, retrieved October 24, 2022
"From Landing to Launch Orbiter Processing" (PDF). NASA. 2002. Archived from the original (PDF) on July 21, 2011. Retrieved June 30, 2011.
Finch, Josh; Schierholz, Stephanie; Herring, Kyle; Lewis, Marie; Huot, Dan; Dean, Brandi (May 31, 2020). "NASA Astronauts Launch from America in Historic Test Flight of SpaceX Crew Dragon". Release 20-057. NASA. Archived from the original on August 20, 2020. Retrieved June 10, 2020.
Rogers, William P.; Armstrong, Neil A.; Acheson, David C.; Covert, Eugene E.; Feynman, Richard P.; Hotz, Robert B.; Kutyna, Donald J.; Ride, Sally K; Rummel, Robert W.; Sutter, Joseph F.; Walker, Arthur B.C.; Wheelon, Albert D.; Yeager, Charles E. (June 6, 1986). "Report of the Presidential Commission on the Space Shuttle Challenger Accident" (PDF). NASA. Archived (PDF) from the original on July 13, 2021. Retrieved July 13, 2021.
"The Columbia Accident". Century of Flight. Archived from the original on September 26, 2007. Retrieved May 28, 2019.
"NASA Columbia Master Timeline". NASA. March 10, 2003. Archived from the original on December 25, 2017. Retrieved May 28, 2019.
Griffin, Michael D. (March 14, 2007). "Human Space Exploration: The Next 50 Years". Aviation Week. Archived from the original on August 7, 2020. Retrieved June 15, 2020.
Klesius, Mike (March 31, 2010). "Spaceflight Safety: Shuttle vs. Soyuz vs. Falcon 9". Air & Space. Archived from the original on August 7, 2020. Retrieved June 15, 2020.
Bell, Trudy; Esch, Karl (January 28, 2016). "The Challenger Disaster: A Case of Subjective Engineering". IEEE Spectrum. IEEE. Archived from the original on May 29, 2019. Retrieved June 18, 2020.
Feynman, Richard (June 6, 1986). "Appendix F – Personal observations on the reliability of the Shuttle". Report of the Presidential Commission on the Space Shuttle Challenger Accident. NASA. Archived from the original on August 7, 2020. Retrieved June 18, 2020.
Flatow, Ira; Hamlin, Teri; Canga, Mike (March 4, 2011). "Earlier Space Shuttle Flights Riskier Than Estimated". Talk of the Nation. NPR. Archived from the original on August 8, 2020. Retrieved June 18, 2020.
"Columbia Accident Investigation Board" (PDF). NASA. August 2003. Archived from the original (PDF) on November 9, 2004. Retrieved June 18, 2020.
"The Vision for Space Exploration" (PDF). NASA. February 2004. Archived (PDF) from the original on January 11, 2012. Retrieved July 6, 2020.
Bush, George W. (January 14, 2004). "President Bush Announces New Vision for Space Exploration Program". NASA. Archived from the original on October 18, 2004. Retrieved July 6, 2020.
Chang, Kenneth (May 30, 2020). "SpaceX Lifts NASA Astronauts to Orbit, Launching New Era of Spaceflight". The New York Times. Archived from the original on August 10, 2020. Retrieved July 5, 2020.
"NASA's Artemis I mission to launch using space shuttle-used parts". CollectSpace.com. Archived from the original on August 31, 2022. Retrieved March 15, 2025.

youtube.com (Global: 13^th place; English: 14^th place)

Space Shuttle Reentry In-depth, July 25, 2020, archived from the original on January 18, 2023, retrieved October 24, 2022

Space Shuttle (English Wikipedia)

airspacemag.com (Global: 5,518th place; English: 3,487th place)

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

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century-of-flight.net (Global: low place; English: low place)

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

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

computerhistory.org (Global: 2,702nd place; English: 1,789th place)

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

ieee.org (Global: 912th place; English: 722nd place)

spectrum.ieee.org

latimes.com (Global: 32nd place; English: 21st place)

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

nasa.gov

science.ksc.nasa.gov

history.nasa.gov

ntrs.nasa.gov

www-pao.ksc.nasa.gov

hq.nasa.gov

science.nasa.gov

lsda.jsc.nasa.gov

spaceflight.nasa.gov

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

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

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

pbs.org (Global: 260th place; English: 176th place)

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

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

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

storage.googleapis.com (Global: 4,648th place; English: 2,969th place)

patentimages.storage.googleapis.com

thoughtco.com (Global: 2,170th place; English: 1,937th place)

typepad.com (Global: 1,805th place; English: 1,102nd place)

aviationweek.typepad.com

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

youtube.com (Global: 13th place; English: 14th place)

airspacemag.com (Global: 5,518^th place; English: 3,487^th place)

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

books.google.com (Global: 3^rd place; English: 3^rd place)

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

computerhistory.org (Global: 2,702^nd place; English: 1,789^th place)

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

ieee.org (Global: 912^th place; English: 722^nd place)

latimes.com (Global: 32^nd place; English: 21^st place)

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

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

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

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

pbs.org (Global: 260^th place; English: 176^th place)

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

storage.googleapis.com (Global: 4,648^th place; English: 2,969^th place)

thoughtco.com (Global: 2,170^th place; English: 1,937^th place)

typepad.com (Global: 1,805^th place; English: 1,102^nd place)

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

youtube.com (Global: 13^th place; English: 14^th place)