WASHINGTON, DC - DECEMBER 03: U.S. Sen. Ed Markey (D-MA) questions Jared Isaacman, U.S. President Donald Trump's nominee to be National Aeronautics and Space Administration (NASA) Administrator, during a confirmation hearing in the Russell Senate Office Building on Capitol Hill on December 3, 2025 in Washington, DC. Isaacman, a billionaire entrepreneur and close associate of SpaceX CEO Elon Musk, faces a rare second confirmation hearing before the Senate Commerce, Science and Transportation Committee. (Photo by Anna Moneymaker/Getty Images)