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Ghostly Travellers
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.
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Other episodes for this season
![Twinkle Twinkle](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![The Spirit of Mars](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Life](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![The Sun in Splendour](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Ring World](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Star Birth](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![The Universe from Atlantis](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Monster Star](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Events on Jupiter](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Light Echoes](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Ghostly Travellers](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![The Great Bear](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)