Observer5 小时
These Space Companies Compete for Lucrative NASA Contracts—They Also Support Each Other
Firefly Aerospace and Intuitive Machines belong to a group of more than a dozen private companies vying to land lucrative ...
Boeing Starliner astronauts finally head home, nine months later
Astronauts Butch Wilmore and Suni Williams are finally returning from the International Space Station. But how did the ...