Bezos’ space company Blue Origin started at about the same time as Musk’s SpaceX but since then Musk’s firm has launched more than 400 of its Falcon 9 rockets into orbit and is testing out its giant Starship rocket which it hopes will send astronauts to the Moon and one day possibly on to Mars.

Blue Origin scrubbed a planned launch of its New Shepard rocket Tuesday due to persistent cloud cover at the west Texas launch site. In a post on social media, the company said an additional issue with the rocket’s avionics was discovered during the 90-minute-plus launch hold.