The Doctor's TARDIS lands at the Snowcap space tracking station in Antarctica in December 1986. A routine space mission starts going wrong. When the base personnel's suspicions are roused, the Doctor informs them that the space capsule is being affected by the gravitational pull of another planet — a tenth planet in the Solar system.
Doctor Who: Deep Breath
2014
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Doctor Who: The Snowmen
2012
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Doctor Who: The Day of the Doctor
2013
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The Time Shifters
1999
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Daleks' Invasion Earth: 2150 A.D.
1966
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Stargate: Continuum
2008
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Doctor Who: The Next Doctor
2008
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Blackadder: Back & Forth
1999
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Doctor Who
1996
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Space/Time
2025
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