Billionaire investor Isaacman has been voted in as the incoming leader of NASA, capping an atypical nomination process where Trump put his name forward, withdrew it, and then renominated him.
The 42-year-old, an aviation enthusiast who was the first non-professional astronaut to perform a spacewalk, is also the first agency head in a generation to come entirely from the private sector.
For numerous observers, the success of his leadership will be determined by one crucial test: if NASA can return humans to the Moon ahead of the Chinese space program.
The President has made clear a ambition for the United States to build a permanent lunar base, both to enable harvesting materials and to act as a staging point for missions to Mars.
On This week, the U.S. Senate approved his appointment with a decisive vote.
The President originally rescinded Isaacman's nomination in May, pointing to a "comprehensive examination of previous relationships".
At the time, the president was publicly feuding with the SpaceX CEO, one of his largest political donors, with whom the nominee has a working relationship.
Isaacman has stated he is now completely supportive of Trump's mission to mine the moon, placing him in disagreement with Elon Musk, who has said that focus on the moon is a distraction from the primary objective of travelling to Mars.
In the ongoing cosmic competition, countries are racing to utilize the lunar surface.
“Now is not the time for delay but a time for action because if we lose ground, if we stumble, we may be permanently behind, and the implications could shift the balance of power here on our planet,” he told the Senate committee recently.
The business leader sees fostering more private sector competition as crucial for meeting those targets, according to a recently disclosed document laying out his strategy for NASA.
In his testimony, he reaffirmed the blueprint, which he crafted when he was first nominated, but said it was a developing document.
His support for competition could also create a conflict with SpaceX. Last week, he commended the award of a lucrative deal to Blue Origin, which is one of the few rivals of SpaceX.
In the strategy paper, he recommended NASA should forge stronger ties with universities and academic institutions, positioning the agency as a "force multiplier for research".
He highlighted the planned deployment of the Roman Telescope as a cornerstone project.
"Should we be close to something extraordinary - like launching Roman - I will consider all avenues to make it happen, even funding it myself if that's what it requires to achieve the science," he stated.
According to analyses, his wealth is valued at approximately $1.2 billion, made mostly from his payment processing company and the sale of his business that trained pilots and managed a collection of military aircraft.
The top job at NASA will be his first job in public office, a contrast to the previous two appointees who served as head of the agency.
He will take over from Sean Duffy, who has served as temporary leader since July.
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