Asteroids and atmospheres — Wonders of the Solar System with Brian Cox — BBC

The Best of British Geekery — Part of BBC Worldwide’s Geek Week takeover. Professor Brian Cox reveals how something as flimsy as an envelope of gas - our atmosphere - can create some of the most wondrous sights in the solar system and provide protection from objects like Asteroids. The tiny planet Mercury was stripped naked of its early atmosphere and is fully exposed to the ferocity of space as we can see from it’s scarred surface. Subscribe to the BBC Worldwide channel: