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Former NASA astronaut and then-U.S. senator Mark Kelly challenged Elon Musk to climb into a rocket himself after Musk criticized the handling of astronauts Suni Williams and Butch Wilmore’s extended stay aboard the International Space Station.
The “cowardice” language comes from the headline framing of a Futurism report published February 24, 2025. Kelly’s actual remark mocked Musk’s lack of personal spaceflight experience; it was not a formal NASA accusation or an official finding that Musk was cowardly.
What Mark Kelly said to Elon Musk
Kelly wrote:
“Hey Elon Musk, when you finally get the nerve to climb into a rocket ship, come talk to the three of us.”
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The comment was a pointed reference to Musk’s role in the commercial space industry and his public criticism of astronauts and mission decisions. Kelly’s wording was sarcastic and confrontational, but it does not establish that he formally accused Musk of cowardice.
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Kelly was a former NASA astronaut, not an active NASA employee at the time. He was serving as a U.S. senator when the exchange was reported. There is no indication in the available coverage that NASA endorsed his remark or issued a statement describing Musk as a coward.
Why Musk was criticizing Williams and Wilmore’s return
The argument centered on NASA astronauts Suni Williams and Butch Wilmore, whose mission aboard the ISS lasted much longer than initially expected after problems affected Boeing’s Starliner spacecraft.
Musk claimed that the astronauts had been “left up there” for political reasons and that SpaceX could have returned them months earlier. He also said SpaceX had offered an earlier return directly to the Biden administration and that the offer had been rejected.
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Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Those statements should remain attributed to Musk. The available report does not independently establish that the astronauts were abandoned, that political motives caused the delay, or that a separate rescue mission had been formally offered and rejected.
Andreas Mogensen disputed Musk’s account
European Space Agency astronaut and former ISS commander Andreas Mogensen challenged Musk’s description of the situation. According to the reported exchange, Mogensen said the plan for Williams and Wilmore to return with the Crew-9 mission had been in place since the previous September.
That distinction matters. The plan involved using the Crew Dragon spacecraft already associated with the ISS mission—not SpaceX suddenly dispatching a separate rescue vehicle. Calling the astronauts “stranded” can therefore be misleading if it suggests they had no planned route home. A more precise description is that their ISS mission was unexpectedly extended while NASA addressed the Starliner-related problems and arranged their eventual return aboard Dragon.
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Mogensen’s account also disputed the idea that the later return plan was a newly improvised rescue. It was his account of the mission planning, rather than an independently verified finding in the available coverage.
Musk’s response to Mogensen
Musk responded by attacking Mogensen personally and using an ableist slur. He repeated his claim that SpaceX could have brought Williams and Wilmore home months earlier.
He also argued publicly that the International Space Station should be destroyed sooner than planned. That was Musk’s personal proposal, not evidence of an adopted NASA policy or an announced change to the station’s operational schedule.
The exchange quickly moved beyond a disagreement about spacecraft planning. It became a public dispute over who had the expertise to characterize a crewed mission, how much weight to give Musk’s claims about government decisions, and whether personal attacks were appropriate in discussions involving astronaut safety.
Scott Kelly was involved too—but he was not the person who challenged Musk
The two Kelly brothers are easy to confuse:
- Mark Kelly made the “get the nerve” remark directed at Musk.
- Scott Kelly, also a former NASA astronaut, defended Andreas Mogensen and described him as highly competent, trustworthy, and honest.
- Andreas Mogensen disputed Musk’s account of the return plan.
- Suni Williams and Butch Wilmore were the astronauts whose extended ISS mission triggered the argument.
Mark and Scott Kelly are identical twins, but they played different roles in this episode. Referring simply to “a NASA astronaut” can obscure both that distinction and Mark Kelly’s status as a former astronaut.
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What is verified—and what remains disputed?
The available account, published by Futurism, establishes the reported sequence: Musk criticized the handling of Williams and Wilmore’s return; Mogensen disputed that characterization; Musk responded with an insult and repeated his earlier-return claim; Scott Kelly defended Mogensen; and Mark Kelly challenged Musk to fly into space himself. The report is available here.
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However, the available coverage does not by itself provide a complete primary-source record of the original social-media posts, timestamps, official NASA documentation, or White House records concerning Musk’s alleged offer. The most careful wording is therefore:
- Musk claimed SpaceX could have returned the astronauts earlier.
- Mogensen disputed that claim and described the Crew-9 return plan as prearranged.
- Kelly’s post mocked Musk’s lack of personal spaceflight experience.
- The “cowardice” label was headline interpretation, not an official NASA judgment.
Why the exchange attracted attention
The dispute exposed a recurring tension in modern spaceflight: private aerospace executives can have major influence over missions while astronauts and former astronauts retain highly specialized operational experience. Public arguments between them can affect how audiences understand crew safety, spacecraft readiness, government decision-making, and the relationship between NASA and its commercial partners.
It is also important not to exaggerate the incident. The evidence describes a heated exchange involving public figures and former astronauts. It does not show that NASA and SpaceX had entered an official institutional rupture, that NASA had condemned Musk, or that every astronaut shared Kelly’s view.
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsThe referenced article was published on February 24, 2025. It should not be presented as a new August 2026 development.
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