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December 13, 2011
- Orion Drop Test – Dec. 13, 2011
- NASA’s Fermi Shows That Tycho’s Star Shines in Gamma Rays
- NASA Astronaut Available Via Internet To Discuss Recruiting
- Bright Enceladus
- Orion Drop Test – Dec. 13, 2011
- Apollo 17 Extravehicular Activity
- Clouds over the Indian Ocean
- APOD: 2011 December 13 – In the Vicinity of the Cone Nebula