Patrick Moore talks to the world's leading comet experts about the fallout from NASA's impactor probe, Deep Impact, to the comet 9P/Tempel-1. Chris Lintott reports from the Palomar Observatory. Show more
Discover 11,128,835 listings and 280,258 playable programmes from the BBC
Patrick Moore talks to the world's leading comet experts about the fallout from NASA's impactor probe, Deep Impact, to the comet 9P/Tempel-1. Chris Lintott reports from the Palomar Observatory. Show more