Video: Big Space Balloon by Jonny O'Callaghan, 12 April 2012 Find out how the Big Space Balloon will work in this video. Tweet 2,597 views comments To find out more about this fantastic British project, check out our article in issue 33 of How It Works, on sale now. More Like This... Space Top 5 Facts: Asteroids Five delicious fact nuggets to sate your ravenous hunger for knowledge. Space What exactly is a parsec? Time, space and angles are involved. Learn what a parsec is right now by reading on Space Amazing superstars Find out the hottest, oldest and farthest known stars in the universe now More From The Internet... What was inside a Celtic roundhouse? Anatomy of a pig What would happen if two black holes collided? What would happen if the Sun disappeared?