LKS 20220621 BSX_7338.NEF; (FILES) In this file photo taken on April 11, 2022, Elon Musk, founder of SpaceX, speaks during the Satellite 2020 at the Washington Convention Center in Washington, DC. - Elon Musk's SpaceX has fired several employees behind a letter critical of the outspoken billionaire's public behavior, the aerospace firm said in a message to staff confirmed by AFP on Friday. - LEHTIKUVA / AFP Brendan Smialowski