Sierra Space successfully finished its third module test for the Blue Origin-led Orbital Reef private space complex for NASA, on the long road to replace the International Space Station.

We test for 200 hours, pull it out, see what the output degradation is, put it back for another 200 hours and, in some cases, we continue until the output of the module drops below a certain level ...

During the burst test, the teams inflate the module until it fails. Gif: Sierra Space You can’t fly an inflatable module to space without bursting a few on Earth. Sierra Space watched its giant ...

NASA's Apollo 5 mission launched on Jan. 22, 1968 and marked the first test flight of the Lunar Module that would eventually carry astronauts to the moon. See photos from the historic mission here!