There seems to be a bromance in the private space race. On Monday, as SpaceX founder Elon Musk was making his last-minute preparations for a planned Tuesday launch of Falcon Heavy — the company's most powerful rocket — Jeff Bezos sent Musk a good luck tweet: Musk has described the feat he's attempting as a veritable space ballet. If the launch is a success, it'll send Musk's own 2008 Tesla Roadster into an elliptical orbit between Mars and the Sun.
