Astronaut Chris Hadfield: Nothing sacred about space, it's just an extension of humanity

International treaties ban the placement of nuclear weapons in space, but there's no ban on conventional weapons. Could that lead to another arms race? WATCH THE FULL SHOW ON SUNDAY RT LIVE http://rt.com/on-air Subscribe to RT! http://www.youtube.com/subscription_center?add_user=RussiaToday Like us on Facebook http://www.facebook.com/RTnews Follow us on Twitter http://twitter.com/RT_com Fol ...