SpaceX's science fiction dreams come with an astronomical bill

SpaceX's AI bill is nearly as large as its rockets. SERGIO FLORES/AFP via Getty Images Elon Musk's cosmic ambitions come with an astronomical bill, and it's making Wall Street nervous. SpaceX shares fell as much as 11% in after-hours trading, despite the company delivering a revenue beat. SpaceX spent nearly $16 billion on AI infrastructure in the past three months, well above expectations. As an abandoned SpaceX rocket crashes into the moon, Elon Musk's science-fiction ambitions are on their…