The White House has withdrawn Jared Isaacman as its nominee for Nasa administrator, abruptly yanking a close ally ofElon Muskfrom consideration to lead the space agency.
Donald Trump said he would announce a new candidate soon. “After a thorough review of prior associations, I am hereby withdrawing the nomination of Jared Isaacman to head Nasa,” the US president posted online. “I will soon announce a new Nominee who will be mission aligned, and put America first in space.”
Isaacman, a billionaire private astronaut who had been Musk’s pick to leadNasa, was due next week for a much-delayed confirmation vote before the US Senate. His removal from consideration caught many in the space industry by surprise.
Trump and the White House did not explain what led to the decision.
Isaacman, whose removal was earlier reported by Semafor, said he was “incredibly grateful” to Trump “and all those who supported me throughout this journey”.
“I have gained a much deeper appreciation for the complexities of government and the weight our political leaders carry,” he posted. “It may not always be obvious through the discourse and turbulence, but there are many competent, dedicated people who love this country and care deeply about the mission.”
Isaacman’s removal comes just days after Musk’s officialdeparture from the White House, where the SpaceX CEO’s role as a “special government employee” leading the so-called department of government efficiency (Doge) created turbulence for the administration and frustrated some of Trump’s aides.
Musk, according to a person familiar with his reaction, was disappointed by Isaacman’s removal.
“It is rare to find someone so competent and good-hearted,” Musk wrote of Isaacman on X, responding to the news of the White House’s decision.
Musk did not immediately respond to a request for comment.
It was unclear whom the administration might tap to replace Isaacman.
One name being floated is the retired US air force Lt Gen Steven Kwast, an early advocate for the creation of the US space force and a Trump supporter, according to three people familiar with the discussions.
Isaacman, the former CEO of the payment processor company Shift4, had broad space industry support but drew concerns from lawmakers over his ties to Musk and SpaceX, where he spent hundreds of millions of dollars as an early private spaceflight customer.
The former nominee had donated to Democrats in prior elections. In his confirmation hearing in April, he sought to balance Nasa’s existing moon-aligned space exploration strategy with pressure to shift the agency’s focus on Mars, saying the US can plan for travel to both destinations.
As a potential leader of Nasa’s 18,000 employees, Isaacman faced a daunting task of implementing that decision to prioritize Mars, given that Nasa has spent years and billions of dollars trying to return its astronauts to the moon.
On Friday, the space agency released new details of the Trump administration’s 2026 budget plan that proposed killing dozens of space science programs and laying off thousands of employees, a controversial overhaul that space advocates and lawmakers described as devastating for the agency.
The Montana Republican Tim Sheehy, a member of the Senate Commerce, Science and Transportation committee, posted that Isaacman had been “a strong choice by President Trump to lead Nasa”.
“I was proud to introduce Jared at his hearing and strongly oppose efforts to derail his nomination,” Sheehy said.
Some scientists saw the nominee change as further destabilizing to Nasa as it faces dramatic budget cuts without a confirmed leader in place to navigate political turbulence between Congress, the White House and the space agency’s workforce.
“So not having [Isaacman] as boss of Nasa is bad news for the agency,” Harvard-Smithsonian astronomer Jonathan McDowell posted.
“Maybe a good thing for Jared himself though, since being Nasa head right now is a bit of a Kobayashi Maru scenario,” McDowell added, referring to an exercise in the science fiction franchise Star Trek where cadets are placed in a no-win scenario.
With Reuters