Russian astronaut Vasily Tsibliyev hadn’t had a good night’s sleep for 12 days. He was being kept awake on purpose, as part of a study about sleeping on board the space station Mir. On the 13th day, June 25, 1997, he was assigned to guide a cargo ship ...

Sleep deficiency is pervasive among astronauts before and during space flight, and the reported incidence of sleep-promoting medication use is 20 times greater than the proportion of Americans estimated to use hypnotic drugs at any time in a given year ...

It's hard being in space. You're isolated from friends and loved ones, your mitochondria get damaged, you get dumber, and you might just get stranded for months at a time (and get under $1,500 for it). Oh, and according to a study just published, your ...

Scientists around the world are sounding the alarm over an ambitious plan to install thousands of mirrors and myriad satellites in space, claiming that it will impact sleep and various ecosystems on a global level.

Use BBC.com or the new BBC App to listen to BBC podcasts, Radio 4 and the World Service outside the UK. Four astronauts have travelled further from Earth than anyone ever before. It's part of the Artemis II mission - which saw humans go to the Moon for the first time in over 50 years.

The Artemis II astronauts didn't just make history this week; they're also taking part in health studies that will give scientists more data about all of us here on Earth. Michael George reports.