Today, Asteroid Toutatis makes its closest-ever approach to Earth - and at three miles long, it will be the biggest space rock to make such a close pass this century. Adam Hart-Davis and Dr Lucie Green investigate other Near Earth Objects, and discover why, in January earlier this year, the innocuous-sounding AL00667 asteroid put
Nasa scientists on code red as it came within a stone's throw (astronomically speaking) of collision with Earth. Series producer Patrick Titley : Executive producer Paul Bader
www.open2.net Adam Hart-Davis on a space invader: page 28