Stargazing

Dara O Briain and Professor Brian Cox reveal the latest weather reports from space, including baffling hexagonal clouds and Saturn's gigantic storms.

While Dara O Briain finds out how it feels to be weightless on the "vomit comet," Professor Brian Cox describes how scientists tackle the problems of interstellar travel.

Professor Brian Cox reveals how the Gaia space probe is mapping a billion stars, while Dara O Briain has his sights set on a weekend break on a distant planet.