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| Building Life from Star-Stuff |
| Topic: Cosmic Evolution |
09/05/05 |
| If a planet or moon has only a slight rotational tilt, a tall mountain or crater rim can be forever bathed in sunlight. In 1994, NASA's Clementine mission found candidates for such "peaks of eternal light" on the moon's north and south poles. |
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| MRO Lifts Off Into Space |
| Topic: Mars |
08/12/05 |
| The Mars Reconnaissance Orbiter (MRO) launched this morning from Cape Canaveral, Florida. It will take seven months to reach Mars, arriving at the planet in March 2006. |
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| Proving the Case |
| Topic: Mars |
08/01/05 |
| On Earth, methane is mostly produced by life. The recent detection of methane on Mars therefore has led to much speculation about the possibility for life on the Red Planet. The strategies that may resolve this issue are revealed in the final part of this series on martian methane. |
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| Mystery Methane Maker |
| Topic: Mars |
07/27/05 |
| On Earth, methane is mostly produced by life. The recent detection of methane in the martian atmosphere therefore has given rise to much speculation about the possibility for life on the Red Planet. Part three of this four-part series investigates the most likely scenario for producing methane on Mars. |
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| Methane on Earth |
| Topic: Mars |
07/25/05 |
| On Earth, methane is mostly produced by life. The recent detection of methane in the martian atmosphere therefore has given rise to much speculation about the possibility for life on the Red Planet. In part two of this four-part series, the various ways nature produces methane are considered. |
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| Interplanetary Whodunit |
| Topic: Mars |
07/20/05 |
| On Earth, methane is mostly produced by life. The recent detection of methane in the martian atmosphere therefore has given rise to much speculation about the possibility for life on the Red Planet. Part one of this four-part series about methane and Mars provides an overview of the recent findings. |
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| Crash Course in Comet Construction |
| Topic: Meteorites, Comets and Asteroids |
07/04/05 |
| Comet Tempel 1 was hit hard by a NASA spacecraft earlier today. Deep Impact scientists provided more details about what the impact has taught us about the comet's structure. |
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| Impact! |
| Topic: Meteorites, Comets and Asteroids |
07/04/05 |
| The Deep Impact mission proceeded exactly as planned, with the impactor spacecraft smashing into the sunlit side of comet Tempel 1. |
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| The Pause before the Crash |
| Topic: Meteorites, Comets and Asteroids |
07/01/05 |
| The Deep Impact spacecraft is nearing the comet Tempel 1. On Sunday, July 3, a smaller spacecraft will separate from the mothership, ready to sacrifice its life for the benefit of cometary scientists everywhere. |
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| Titan and the Lakefront? |
| Topic: Titan |
06/28/05 |
| At a high southern latitude on Saturn's moon, Titan, a dark outline suggests what a terrestrial observer would consider the shorelines of a lake. Cassini Imaging Team Leader, Carolyn Porco, describes the excitement and surprise of their latest titanic discoveries. |
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