Elon Musk is the most prominent user on his own social media site, X. He posts frequently almost every day on the site, which was formerly called Twitter. On March 18, so far Musk has posted or reposted 19 times, with the majority of his posts being about the Space Dragon docking at the International Space Station.

Elon Musk says SpaceX will go to Mars at the end of 2026 with Tesla's Optimus, a humanoid robot. If all goes well, humans could be headed to the red planet in 2029, Musk says.