Ghostly Travellers

Nov 08, 2010 on BBC FOUR at 10:00 PM


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 ... (more)hopes to rendezvous with comet Hartley 2.

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Light Echoes
Season 2010 Episode 10

Oct 05, 2010

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The Great Bear
Season 2010 Episode 12

Dec 07, 2010