The 757th episode of Doctor Who (the 59th since the series’ revival) airs on BBC1. This is the first part of the final story of David Tennant’s era, with an unusually grim storyline for its Christmas Day airdate. Bernard Cribbins, John Simm (Life On Mars) and Timothy Dalton guest star.

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The 23rd episode of Joss Whedon’s futuristic “spy-fi” series Dollhouse airs on Fox, starring Eliza Dushku. Summer Glau (Firefly, Terminator: The Sarah Connor Chronicles) guest stars.
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British toymaker Character Options releases the
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Space Shuttle Endeavour lifts off on the 130th shuttle flight, a 14-day mission to the International Space Station. The Endeavour crew and station astronauts install another module, the Tranquility node, allowing for further expansion of the station in the future; this module also includes the cupola “control tower” that has become visually synonymous with the ISS. Aboard Endeavour for her 24th flight are Commander George Zamka, Pilot Terry Virts, and mission specialists Nicholas Patrick, Stephen Robinson, Robert Behnken and Kathryn Hire.
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NOAA’s GOES-15 Geostationary Operational Environmental Satellite is launched from Cape Canaveral into geosynchronous orbit to monitor weather patterns over the United States. In accordance with NOAA’s policy of having standby weather satellites already in orbit before their predecessors are decommissioned, GOES-15 is held in reserve until late 2011, when it will become the primary GOES-WEST satellite. It remains in orbit on active weather-watching duty.
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NASA’s Spirit Mars rover makes its last contact with ground controllers on Earth. With the Martian winter fast approaching, and the rover’s wheels leaving it stuck in an unfavorable position to keep its solar panels angled toward the sun, Spirit gradually loses power until it shuts off, its mission having lasted nearly seven and a half years – almost 30 times its original design and mission lifespan of 90 days. Spirit’s ground controllers are reassigned to either Opportunity (which is still mobile and operating) or the upcoming Mars Science Laboratory Curiosity rover mission.
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