As a new space race develops between different nations and as private companies start to explore the possibilities of space tourism, how do we regulate and govern what happens in space? Is there a danger that the environment on earth and in space could damaged by these activities ? And what are the challenges and opportunities of space exploration? Jonny Dymond brings together an expert panel to answer questions posed by World Service listeners from all over the globe. The panel includes: former astronaut and commander of the International Space Station Chris Hadfield, Simonetta Di Pippo, Director of the United Nations Office for Outer Space (UNOOSA), Jane Poynter, US aerospace executive and founder of Space Perspective, a luxury space travel company and David Valentine, Associate Professor of Anthropology at the University of Minnesota. (Photo: The Ariane 5 rocket lifts off from the European Spaceport in Kourou, French Guiana. Credit: JODY AMIET/AFP via Getty Images)