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Outer Limits
The outer limits of the solar system are a dark, cold and mysterious place, which only the Voyager spacecraft have visited. Sir Patrick Moore discusses the ice giants Uranus and Neptune, while Chris Lintott has an early Christmas treat - a lost episode of The Sky at Night from 1963 which has been returned to the BBC, in which Arthur C Clarke talks about his vision of bases on the moon and speculates when man will be on Mars.
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Other episodes for this season
![Volcanoes of the Solar System](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Orion the Hunter](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![700 Not Out](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Double Star Party](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Storm Chasing](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Cygnus the Swan](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![The Stars Indoors](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Dawn at Vesta](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Final Frontier](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Pegasus and Andromeda](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Curious about Mars](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)
![Outer Limits](https://image.tmdb.org/t/p/w300/LW2mv9LyXFAuIX7S86I7wtaoQE.jpg)