In the 1990s, NASA designed an experimental space plane meant to be a cost-effective alternative to expensive rockets. Called the X-33, it was based on a concept called SSTO —…
Category: Science
Four civilians on a daring SpaceX mission are attempting the first commercial spacewalk
A four-person crew of civilians on board SpaceX’s Polaris Dawn mission are preparing to unlock the hatch of their capsule and make history as the first group of non-government astronauts to conduct…