Back to Earth allows viewers to journey deeper into the ideas explored on the main show and ask questions of both Brian Cox and a panel of expert scientists. Guests include musician Tim Minchin.

Back to Earth allows viewers to journey deeper into the ideas explored on the main show and ask questions of both Brian Cox and a panel of expert scientists. Guests include Professor Fred Watson.

Back to Earth allows viewers to journey deeper into the ideas explored on the main show and ask questions of both Brian Cox and a panel of expert scientists. Guests include "Space Gandalf", Greg Quicke.