President Donald Trump on Saturday rescinded his nomination of tech billionaire Jared Isaacman to lead NASA, citing a “thorough review of prior associations.”

Jonathan McDowell, an astrophysicist at the Harvard & Smithsonian Center for Astrophysics, said missing out on Isaacman was "bad news for the agency."

President Trump has pulled his nomination of Jared Isaacman, a billionaire commercial astronaut with close ties to Elon Musk, as NASA administrator.

President Trump on Saturday abruptly yanked his nomination of billionaire Jared Isaacman — an ally of Elon Musk who founded a company that has the world’s largest private air force — to helm NASA days before his expected Senate confirmation vote.