SpaceX CEO Elon Musk tweeted on Friday that he had never seen the SpaceX Facebook page and planned to delete it. He's the latest tech entrepreneur to discuss Facebook in the wake of the Cambridge Analytica scandal. The data breach has cut tens of billions of dollars off of Facebook's market value. The Tesla and SpaceX Facebook pages vanished, minutes after Elon Musk — the CEO of both companies — said he'd never seen the SpaceX Facebook profile and planned to delete it.