马斯克刚走，他也被撤换了

Group 1 - The White House confirmed that President Trump plans to withdraw the nomination of Jared Isaacman as the head of NASA, citing the need for the next NASA administrator to align with Trump's "America First" agenda [1][3] - Trump's decision to withdraw Isaacman's nomination came after he learned of Isaacman's past donations to prominent Democrats, which surprised him as he was not informed about this prior [3][4] - Isaacman, the founder and CEO of payment processing company Shift4 Payments, was initially nominated by Trump in December 2024, following lobbying from Elon Musk, who highlighted Isaacman's experience in the space sector through SpaceX [3][4] Group 2 - During a Senate hearing in April regarding Isaacman's nomination, there were no significant obstacles, although questions were raised about his close ties to Musk and the implications for NASA's goals, particularly the Artemis program aimed at returning astronauts to the Moon [4] - The day before the White House confirmed the withdrawal of Isaacman's nomination, Trump held a press conference to bid farewell to Musk, who previously led the Office of Efficiency in the government [4]