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Hot Topic
Solar System
Meteorites, Comets and Asteroids
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Workshop Findings on Asteroid 2011 AG5
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| Topic: Meteorites, Comets and Asteroids |
06/18/12 |
| Scientists anticipate that the asteroid 2011 AG5 will fly safely past and not impact the Earth in 2040. |
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New Evidence Links Cosmic Impact to Mass Extinction
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| Topic: Meteorites, Comets and Asteroids |
06/13/12 |
| Melt-glass material in a thin layer of sedimentary rock, which dates back nearly 13,000 years, may suggest that an impact was linked to the extinction of North America's megafauna. |
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Sunlight Has Changed the Path of Asteroid 1999 RQ36
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| Topic: Meteorites, Comets and Asteroids |
05/28/12 |
| Scientists with the OSIRIS-REx mission have measure the orbit of the asteroid 1999 RQ36 with such accuracy that they were able to determine the drift it experiences after absorbing sunlight and re-emitting the energy as heat. |
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Pinpointing Potentially Hazardous Asteroids
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| Topic: Meteorites, Comets and Asteroids |
05/19/12 |
| New observations are helping scientists assess the number of potentially hazardous asteroids in our solar system. These asteroids include those big enough to make it through the Earth's atmosphere and cause damage on regional or greater scales. |
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Rare Meteorite Spurs Hunt for Fragments
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| Topic: Meteorites, Comets and Asteroids |
05/16/12 |
| A fragment recovered from the "Sutter's Mill Meteorite," which fell to Earth on April 22, has been generously donated to NASA. Now, research on the meteorite fragment could bring answers to unsolved mysteries about our solar system and the origins of molecules necessary for life. |
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Beautiful Vesta
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| Topic: Meteorites, Comets and Asteroids |
05/14/12 |
| Six papers on results of the Dawn spacecraft's exploration of the protoplanet Vesta were published on May 11, detailing a plethora of new discoveries. |
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Meteor Explodes Over California
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| Topic: Meteorites, Comets and Asteroids |
04/29/12 |
| On April 22, 2012, a fireball over the skies of central/northern California was accompanied by a loud explosion. The source was a meteoroid about the size of a minivan. |
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Dawn Reveals Secrets of Vesta's History
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| Topic: Meteorites, Comets and Asteroids |
04/28/12 |
| NASA's Dawn spacecraft has revealed the varied surface composition, sharp temperature changes, and clues about the internal structure of the asteroid Vesta. |
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