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Jared Taylor Isaacman (born February 11, 1983) is an American entrepreneur, pilot, philanthropist, and commercial astronaut. He was nominated by President Donald Trump in January 2025 to serve as the next administrator of NASA. [3]
[1] [2] In late 2016, he grew dissatisfied with photography as his main means of employment, and continued to pursue his "Everyday Astronaut" internet persona on Instagram and Twitter. [2] In 2017, he created a YouTube channel covering spaceflight education, and that became his primary occupation. [ 2 ]
Richard Allen Garriott (born 4 July 1961) is a British-born American video game developer, entrepreneur and private astronaut.. Garriott, who is the son of NASA astronaut Owen Garriott, was originally a game designer and programmer, and is now involved in a number of aspects of computer-game development.
Leland Devon Melvin (born February 15, 1964) is an American engineer and a retired NASA astronaut.He served on board the Space Shuttle Atlantis as a mission specialist on STS-122, and as mission specialist 1 on STS-129.
The following table lists the top 30 most-retweeted posts on X/Twitter, the account that posted or tweeted it, the total number of retweets or reposts rounded down to the nearest hundred thousand, and the date it was originally posted. Posts that have an identical number of reposts are listed in date order with the most recent post ranked highest.
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All four received commercial astronaut training by SpaceX. The training included lessons in orbital mechanics, operating in a microgravity environment, stress testing, emergency-preparedness training and mission simulations. [20] [22]
Jonathan Yong Kim (born 5 February 1984) is an American U.S. Navy lieutenant commander, former SEAL, flight surgeon, Naval aviator, physician, and NASA astronaut.. Born in Los Angeles, Kim enlisted in the U.S. Navy in the early 2000s before earning a Silver Star, Bronze Star with V device, and his commission.