It's official: Elon Musk is combining SpaceX and xAI as he overhauls his sprawling business empire. Musk told workers in a Monday memo that SpaceX has acquired xAI, his AI company, sources familiar with the matter confirmed to Business Insider. The CEO wrote that the deal would create "the most ambitious, vertically-integrated innovation engine on (and off) Earth, with AI, rockets, space-based internet, direct-to-mobile device communications and the world's foremost real-time information and