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Hot Topic
Solar System
Meteorites, Comets and Asteroids
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Exocomets May Be as Common as Exoplanets
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| Topic: Meteorites, Comets and Asteroids |
01/09/13 |
| Astronomers have reported the discovery of six possible comets around distant stars. The study suggests that 'exocomets' could be as common as planets in other stellar systems. |
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Vesta Impacts Delivered Carbon
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| Topic: Meteorites, Comets and Asteroids |
01/06/13 |
| NASA's Dawn spacecraft captured images of two enormous craters in the southern hemisphere of Vesta. Studies now show that the impacts not only altered Vesta's shape, but also its surface composition. |
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Astrobiology Top 10: Dawn Reveals Secrets of Vesta's History
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| Topic: Meteorites, Comets and Asteroids |
12/25/12 |
| As 2012 draws to a close, Astrobiology Magazine highlights the year's top stories. At number 9, NASA reported that the Dawn spacecraft had revealed the varied surface composition, sharp temperature changes, and clues about the internal structure of the asteroid Vesta. (Originally published on 04/28/12) |
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Partly Cloudy with a Chance of Meteorites
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| Topic: Meteorites, Comets and Asteroids |
12/21/12 |
| A new tool is helping improve the odds of identifying meteorite falls on Earth. Using weather radars, scientists have helped identify three confirmed meteorites in the United States alone in the past eight months. |
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Bearing the Brunt of a Meteorite Impact
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| Topic: Meteorites, Comets and Asteroids |
12/13/12 |
| High-speed video is helping scientists understand how meteorites transfer the energy of impact to sand and dirt grains. |
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What's Creating Gullies on Vesta?
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| Topic: Meteorites, Comets and Asteroids |
12/11/12 |
| Scientists have spotted gullies that sculpt the walls of geologically young craters on the giant asteroid Vesta. |
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Analyzing Asteroid Dust From Space
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| Topic: Meteorites, Comets and Asteroids |
12/03/12 |
| Scientists are now studying small particles of the asteroid Itokawa that were returned to Earth by the Hayabusa spacecraft. The samples from space are providing new insight into the earliest stages of our solar system's formation and evolution. |
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Meteorites Reveal Warm Water Existed on Mars
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| Topic: Meteorites, Comets and Asteroids |
11/17/12 |
| Scientists have discovered that water temperatures on ancient Mars were within a range that microorganisms on Earth can live in. The research is based on detailed studies of Mars meteorites coupled with computer modeling. |
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