Billionaire investor Isaacman has been formally approved as the new administrator of NASA, concluding an extraordinary selection saga where the President put his name forward, withdrew it, and then submitted his name once more.
Isaacman, an aviation enthusiast who became the first private citizen to undertake a extravehicular activity, is also the first agency head in many years to come directly from outside public service.
For a significant portion of the space community, the success of his leadership will be judged on one pivotal challenge: if NASA can land people to the Moon ahead of China.
The administration has made clear a goal for the United States to build a sustained presence on the moon, both to enable resource extraction and to serve as a staging point for travel to Mars.
On Wednesday, the Senate cleared Isaacman's nomination with a bipartisan vote.
The President originally rescinded the nomination in May, citing a "deep dive of past connections".
At the point, the president was publicly feuding with the SpaceX CEO, one of his largest political donors, with whom the nominee has a working relationship.
Isaacman says he is now aligned with Trump's mission to harvest the moon, creating a divergence from Musk, who has said that focus on the moon is a detour from the goal of travelling to Mars.
In the present cosmic competition, countries are competing to exploit the moon's resources.
âThis is not the time for hesitation but a time for progress because if we lose ground, if we err, we may be permanently behind, and the implications could change the balance of power here on Earth,â he told US Senators during his hearing.
The private sector veteran sees fostering more industry players as crucial for achieving those objectives, according to a recently leaked paper laying out his plan for NASA.
In his confirmation hearing, he stood by the plan, which he drafted when he was initially selected, but said it was a work in progress.
His support for multiple providers could also lead to tension with Musk. Recently, he commended the granting of a lucrative deal to Jeff Bezos's company, which is one of the main challengers of SpaceX.
In the document, he suggested the agency should increasingly partner with research institutes, positioning the agency as a "catalyst for science".
He pointed to the planned 2027 launch of the Roman Space Telescope as a prime illustration.
"Should we be approaching something groundbreaking - like launching Roman - I will explore every option to see it launched, even funding it myself if that's what it takes to achieve the discoveries," he stated.
According to analyses, his fortune is pegged at approximately $1.2 billion, primarily derived from his financial services firm and the divestment of his firm that trained pilots and operated a collection of military aircraft.
The top job at NASA will be his first job in public office, a departure from the previous two appointees appointed as head of the agency.
He will take over from the former transportation secretary, who has acted as acting administrator since the summer.
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