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Hot Topic
Solar System
Meteorites, Comets and Asteroids
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What's Hitting Earth?
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| Topic: Meteorites, Comets and Asteroids |
03/14/11 |
| NASA is deploying a network of cameras across the USA to determine the origin of the 100 tons of meteoroids that enter the Earth's atmosphere every day. The answer could help astrobiologists understand the potential role of meteorids in delivering materials to the Earth that were essential for the origin of life. |
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Vesta Target Practice
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| Topic: Meteorites, Comets and Asteroids |
03/13/11 |
| In preparation for entering orbit around the second most massive body in the asteroid belt, NASA's Dawn mission has been practicing mapping Vesta's surface. |
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Alert to the Approach of Asteroid Apophis
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| Topic: Meteorites, Comets and Asteroids |
03/11/11 |
| Astronomers have taken the first new images in over three years of the potentially dangerous near-Earth asteroid Apophis. The images will help astrobiologists determine the risk of the asteroid colliding with Earth in the future. |
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Abundant Ammonia in Ancient Asteroid
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| Topic: Meteorites, Comets and Asteroids |
03/04/11 |
| Scientists have discovered large amounts of ammonia in samples of a primitive meteorite. Ammonia in meteorites could have provided the early Earth with a sustained source of reduced nitrogen, which is essential for the chemistry of life. This study provides further evidence that meteorites may have been linked to life's origin on Earth. |
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Meteorite Tells of How Planets Are Born in a Swirl of Dust
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| Topic: Meteorites, Comets and Asteroids |
03/03/11 |
| A micro-probe analysis of the core and outer layers of a meteorite has yielded new information about how the meteorite formed. The study provides the first evidence that dust particles experienced wildly varying environments during the time when planets were forming in our solar system. |
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19 Asteroids Bagged in One Night
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| Topic: Meteorites, Comets and Asteroids |
02/27/11 |
| The Pan-STARRS PS1 telescope has discovered 19 near-Earth asteroids in one night. Cataloging near-Earth asteroids is important in determining the potential for future impact events on Earth. |
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How Kleopatra Got its Moons
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| Topic: Meteorites, Comets and Asteroids |
02/26/11 |
| New research shows how the asteroid Kleopatra spawned two moons sometime in the past 100 million years. The detailed study also provides new information about Kleopatra's composition, and could help astrobiologists understand the potential role of asteroids in the origin of life on Earth. |
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Man-Made Comet Crater
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| Topic: Meteorites, Comets and Asteroids |
02/17/11 |
| NASA has released new images from the Stardust spacecraft's encounter with the comet Tempel 1. One set of images shows a new crater that was formed by the impact of the 2005 Deep Impact mission. |
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Two-timing spacecraft has date with another comet
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| Topic: Meteorites, Comets and Asteroids |
02/14/11 |
| NASA's Stardust spacecraft is hurtling toward a Valentine's Day encounter with a second comet. Stardust flew within 150 miles of comet Wild 2 in 2004, and now has its 'heart' set on comet Tempel 1. |
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WISE Comet and Asteroid Count
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| Topic: Meteorites, Comets and Asteroids |
02/07/11 |
| NASA´s NEOWISE mission has completed its survey of small bodies, asteroids and comets, in our solar system. The data will help astrobiologists understand the nature of these space objects and whether or not the Earth is at risk of future impacts. |
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