Jeff Bezos' Blue Origin launched its massive new rocket on its first test flight Thursday, sending up a prototype satellite to orbit thousands of miles above Earth.

Blue Origin successfully launched the rocket after an attempt earlier in the week was scrubbed. The flight is a crucial test of the company’s ability to compete with Elon Musk’s SpaceX.

Jeff Bezos' Blue Origin rocket is about to make a second launch attempt from Florida The reusable rocket had initially been due to set off earlier this week, but was postponed due to a "vehicle subsystem issue" The rocket, New Glenn, is named after John Glenn, the first American to orbit Earth