Elon Musk reposted a photo taken of him and Jeff Bezos at dinner together over twenty years ago. "Wow, a lot has happened in 21 years!" he wrote while reacting to the picture.

Blue Origin's New Glenn finally roared into orbit in the early hours of Thursday, with SpaceX's Starship rocket set to launch hours later.

Elon Musk took to X to share GIFs from the movie "Step Brothers," comparing himself and fellow billionaire Jeff Bezos to the film's two main characters after Bezos's space company, Blue Origin, successfully launched its first rocket into orbit.