Administrator, NASA Content. “Sputnik 1.” NASA, NASA, 5 Nov. 2015,
https://tinyurl.com/image-feature-924.
“Artemis.” NASA, NASA,
https://www.nasa.gov/specials/artemis/.
Blinde, Loren. “NASA Launches Entrepreneurs Challenge.” Intelligence Community News, 14 July 2021,
https://intelligencecommunitynews.com/nasa-launches-entrepreneurs-challenge/.
Charles, Amy, and Victor Dos Santos. “The Most Beautiful Photos Taken on the Apollo 11 Mission.” BBC Future,
BBC, 16 July 2019,
https://www.bbc.com/future/article/20190715-the-most-beautiful-photos-taken-on-the-apollo-11-mission.
“The Decision to Go to the Moon: President John F. Kennedy's May 25, 1961 Speech before Congress.” NASA, NASA,
https://history.nasa.gov/moondec.html.
Dodson, Gerelle. “Starliner Launches to Space Station on Uncrewed Flight Test for NASA.” NASA, NASA, 19 May 2022,
https://www.nasa.gov/press-release/starliner-launches-to-space-station-on-uncrewed-flight-test-for-nasa.
Dunbar, Brian. “First Contracted Spacex Resupply Mission Launches with NASA Cargo to Space Station.” NASA, NASA, 7 Apr. 2015,
https://www.nasa.gov/home/hqnews/2012/oct/HQ_12-355_SpaceX_CRS-1_Launch.html.
Dunbar, Brian. “The Apollo-Soyuz Mission.” NASA, NASA, 16 Apr. 2015,
https://www.nasa.gov/mission_pages/apollo-soyuz/astp_mission.html.
Harwood, William. “Blue Origin Launches Six Passengers on Supersonic Flight to the Edge of Space.” CBS News, CBS Interactive, 4 Aug. 2022,
https://www.cbsnews.com/news/blue-origin-launches-six-passengers-on-supersonic-flight-to-the-edge-of-space/.
“History of Cape Canaveral Chapter 3.” Spaceline,
https://www.spaceline.org/history-cape-canaveral/history-cape-canaveral-chapter-3/.
Loff, Sarah. “Space Shuttle Era.” NASA, NASA, 10 Mar. 2015,
https://tinyurl.com/shuttle-flyout.
“Our Spaceflight Heritage: Explorer 1 and the Birth of the U.S. Space Program.” SpaceFlight Insider, 10 Oct. 2016,
https://www.spaceflightinsider.com/space-flight-history/our-spaceflight-heritage-explorer-1-and-the-birth-of-the-u-s-space-program/.
“Ranger 7 - Moon Missions - NASA Jet Propulsion Laboratory.” NASA, NASA,
https://www.jpl.nasa.gov/missions/ranger-7.
Rincon, Paul. “Yuri Gagarin: The Journey That Shook the World.” BBC News, BBC, 10 Apr. 2011,
https://www.bbc.com/news/science-environment-12380744.
Rothman, Lily. “Apollo 1 Disaster at 50: Why the NASA Tragedy Was so Shocking.” Time, Time, 27 Jan. 2017,
https://time.com/4651553/apollo-1-tragedy-50-years-history/.
Skibba, Ramin. “China Is Now a Major Space Power.” Wired, Conde Nast, 4 Nov. 2022,
https://www.wired.com/story/china-is-now-a-major-space-power-tiangong-space-station/.
“Space Exploration Timeline.” 2011-2020 - Space Exploration Timeline on Sea and Sky,
http://www.seasky.org/space-exploration/space-timeline-2011-2020.html.
“Sputnik, 1957.” U.S. Department of State, U.S. Department of State,
https://history.state.gov/milestones/1953-1960/sputnik.
“Webb Home.” WebbTelescope.org,
https://webbtelescope.org/.