Photo by PATRICK T. FALLON/AFP via Getty Images

President-Elect Donald Trump has nominated billionaire Jared Isaacman to head up NASA, he announced on Wednesday. Isaacman funded and partook in the Polaris Dawn mission, in which he and SpaceX engineer Sarah Gillis performed the first commercial spacewalk.

Isaacman is set to replace former Florida Senator Bill Nelson as NASA Administrator, who President Joe Biden tapped to lead the agency when voted into office. Aside from Polaris Dawn, Isaacman also funded Inspiration 4, a mission that took him and three other non-professional astronauts to space atop SpaceX’s Falcon 9 rocket in 2021.

Most of Isaacman’s fortune comes from Shift4, the payment-processing business he founded when he was 16. He still serves as CEO of the company, which recently acquired the Canadian gift card platform Givex and struck a payments deal with Elon Musk’s Starlink in 2021.

“With the support of President Trump, I can promise you this: We will never again lose our ability to journey to the stars and never settle for second place,” Isaacman wrote on X. “Americans will walk on the Moon and Mars and in doing so, we will make life better here on Earth.”

Isaacman joins the other group of unconventional nominees Trump has chosen to head up various government agencies and advisory committees, including the new “Department of Government Efficiency“ led by Musk and Vivek Ramaswamy.