What is the biggest obstacle to human's colonising another world? Locating a habitable planet? Travelling immense distances? Selecting who we send? No, the answer is space itself.
Christophe Galfard ventures to the high Arctic to witness for himself the beauty and power of radiation coming from space.
The Dangers Of Space Radiation
Stephen Hawking's
The Search For A New Earth
1 x 90 min, Brook Lapping for BBC