The 320-foot New Glenn rocket was initially scheduled to launch early Monday with a prototype satellite aboard.

Jeff Bezos' rocket company Blue Origin moved the launch of its New Glenn rocket from Tuesday to Thursday, Jan. 16, further pushing back its inaugural attempt to reach orbit and compete with SpaceX in the satellite launch market.

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.