The Sky at Night — Episode 4: Herschel in the Red

You are watching the episode Herschel in the Red Patrick Moore discusses what Herschel, Europe's biggest and most expensive space satellite, will do once it begins its infrared exploration of the universe.

Dr Chris Lintott gets a rare chance to see the Herschel mirror, which at 3.5 metres will be the biggest astronomical mirror ever to be sent into space.