For 25 years astronauts have been living and working on the International Space Station for several months at a time. The astronauts have been guinea pigs for what happens to the human body in microgravity: muscles and bones get weaker, DNA changes and the eyes can be damaged. Sky's Thomas Moore visits a lab in Newcastle where scientists simulate what it is like to walk on the moon. #skynews #space #science #astronaut Read more: https://news.sky.com/story/from-bone-damage-to-solar-radiation-inside-the-lab-trying-to-protect-the-astronauts-of-the-future-13484892 SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow us on TikTok: https://www.tiktok.com/@skynews For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB Sky News Daily podcast is available for free here: https://podfollow.com/skynewsdaily/ To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales