The Sky at Night

Name: The Sky at Night S54E11 - Ghostly Travellers
Uploaded: 2010-11-08
Description: Comets are strange and exotic objects, the remnants from dead stars and the birth pangs of our solar system. Only a handful of these ghostly, celestial objects have been seen at close quarters. Sir Patrick Moore discusses NASA's EPOXI mission, which hopes to rendezvous with comet Hartley 2.