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Hot Topic
Solar System
Meteorites, Comets and Asteroids
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Crash Course in Comet Construction
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| 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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Impactor Away
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| Topic: Meteorites, Comets and Asteroids |
07/03/05 |
| One hundred and seventy-one days into its 172-day journey to comet Tempel 1, NASA's Deep Impact spacecraft successfully released its impactor. The separation of flyby spacecraft and the washing-machine-sized, copper-fortified impactor was one in a series of important mission milestones. |
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The Pause before the Crash
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| 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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Rip Van Satellite
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| Topic: Meteorites, Comets and Asteroids |
06/28/05 |
| A dormant satellite awakens from its hibernation to witness the July Fourth collision between a comet and another probe, the Deep Impact mission. |
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Comet Snaps Out of Its Coma...Again
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| Topic: Meteorites, Comets and Asteroids |
06/28/05 |
| NASA's Deep Impact spacecraft has observed a massive, short-lived outburst of ice or other particles from comet Tempel 1 that temporarily expanded the size and reflectivity of the cloud of dust and gas (coma) that surrounds the comet nucleus. |
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Catering a Cometary Crater
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| Topic: Meteorites, Comets and Asteroids |
06/27/05 |
| In a dress rehearsal for the rendezvous between NASA's Deep Impact spacecraft and comet 9P/Tempel 1, the Hubble Space Telescope captured dramatic images of a new jet of dust streaming from the icy comet. |
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Seeing Into A Comet
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| Topic: Meteorites, Comets and Asteroids |
06/21/05 |
| For the first time, scientists have processed images from NASA's Deep Impact spacecraft and clearly seen the solid body, or nucleus, of the comet through the vast cloud of dust and gas that surrounds it. The new images provide important information about the mission's target: the "heart" of comet Tempel 1. |
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Making a Meteor
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| Topic: Meteorites, Comets and Asteroids |
06/18/05 |
| NASA's Deep Impact mission is about to smash into comet 9P/Tempel 1 to excavate a crater and probe the comet's internal structure. It's possible, however, that the comet will break into fragments, creating a cloud of meteoroids. That, say astronomers, may not be unnatural. |
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July Fourth: Crashing the Party
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| Topic: Meteorites, Comets and Asteroids |
06/13/05 |
| Having a comet run into your spacecraft sounds like a catastrophe, but Deep Impact mission scientists are hoping for just such an event. They have sent their spacecraft out on a collision course with comet Tempel 1. |
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Blasting Cap On A Comet
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| Topic: Meteorites, Comets and Asteroids |
06/03/05 |
| On July 4, NASA's Deep Impact spacecraft will attempt an extraordinarily daring encounter with the far-flung comet Tempel 1, which is hurtling through space at tens of thousands of miles per hour. As if that is not challenging enough, the comet's size, shape and other characteristics are not entirely known. |
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