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.

The company, started by the Amazon founder Jeff Bezos, reset its countdown clock repeatedly over a period of just over two hours before eventually postponing the test flight to another day.

Blue Origin, the rocket company founded by Jeff Bezos in 2000, waved off an attempt to launch its first orbital rocket. Blue Origin said engineers worked to troubleshoot an issue with the rocket but could not resolve the problem in time.