The human body was not built for spaceflight, with its microgravity conditions, exposure to high-energy radiation and other ...

Elon Musk and astronaut Andreas Mogensen exchanged barbs after Musk suggested that two NASA astronauts were abandoned on the ...

The International Space Station "has served its purpose" and should be deorbited "as soon as possible," SpaceX chief and ...

"It has served its purpose. There is very little incremental utility. Let's go to Mars."Start the day smarter. Get all the ...