The Sky at Night
Season 49 Episode 8 - Fallout From Deep Impact
On 4 July NASA hopes to send an impactor into the comet 9P/Tempel-1. Patrick Moore talks to the world's leading comet experts about the fallout from this destructive act. Chris Lintott reports from Palomar Observatory in California, where astronomers will be eagerly watching the comet to see what happens when Deep Impact hits its mark.