Outer space is an extremely hostile environment. Scientists have had to come up with some unusual solutions for astronauts to survive there and remain healthy. The challenges increase with the length of time spent in space.
After his second mission to the International Space Station, Alexander Gerst has returned home. He sent some thoughts about the state of the world before he left the station above the planet.
Astro Alex, back on terra firma after nearly six months in space, stressed the importance of protecting our planet for future generations. And as for re-entry, wind and weather feel great after so long in zero gravity.
NASA rescinded an invitation to Dmitry Rogozin after US senators spoke out against his visit. Rogozin normally wouldn't have been allowed to enter the US in the first place due to sanctions against him.
A Soyuz rocket carrying three astronauts is headed for the International Space Station. It is the first liftoff from the Baikonur Cosmodrome in Kazakhstan since a mission failed in October.
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