If there's one thing everybody knows about space, it's that there's no gravity once you leave the Earth's atmosphere. We all ...

Professor Brian Cox experiences what a world without gravity would be like! He 'falls' from 15,000 metres on-board a Zero-G flight - a special aircraft, nicknamed the ‘vomit comet’, to ...

With no gravity to constantly fight against, an astronauts legs, back, and neck muscles will weaken from disuse in as little as a week. While this may not pose an immediate problem during ...