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Solar System
Meteorites, Comets and Asteroids
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Cosmic Collisions
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| Topic: Meteorites, Comets and Asteroids |
07/03/08 |
| Summary: Researchers have been using a vast database to show that asteroids are shaped by small impacts over time. |
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We Are Meteorites
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| Topic: Meteorites, Comets and Asteroids |
06/20/08 |
| Summary: Molecules important for the origin of life have been positively identified in a meteorite. Scientists have confirmed that raw materials for the first molecules of DNA and RNA have been discovered in the Murchison meteorite. |
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Finding New Material in Old Comets
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| Topic: Meteorites, Comets and Asteroids |
06/18/08 |
| Summary: Researchers have found a new mineral, named Brownleeite, in material that likely came from a comet. The mineral was discovered in interstellar dust grains captured at high altitude in the Earth's atmosphere. |
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Amino Acids: In Hot Water
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| Topic: Meteorites, Comets and Asteroids |
06/02/08 |
| Summary: Meteorites shower the Earth with amino acids. A new project is exploring how long amino acids could survive on asteroids, meteorites, and the early Earth. The results could help scientists pinpoint how and where life on our planet began. |
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Asteroid Top Spin
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| Topic: Meteorites, Comets and Asteroids |
06/01/08 |
| Summary: An amateur astronomer has made an observation that will boost our knowledge of near Earth asteroids. Now the fastest known, naturally rotating object in our solar system has been identified. |
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Knocking Back Rocks
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| Topic: Meteorites, Comets and Asteroids |
05/30/08 |
| Summary: Iowa State University has now established the Asteroid Deflection Research Center (ADRC). The ADRC will gather researchers from around the world to develop technologies that will protect the Earth from devastating impacts. |
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Life Falling Back to Earth
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| Topic: Meteorites, Comets and Asteroids |
05/15/08 |
| Summary: New research shows that organisms living inside rocks ejected from planets by asteroid impacts may be able to survive their trip into orbit – and back. |
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Asteroid BB Gun
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| Topic: Meteorites, Comets and Asteroids |
05/10/08 |
| Summary: Researchers confirm that asteroid impacts can strike with enough force to liquefy carbon deep in the Earth's crust and eject it skyward to form beads that then blanket the planet. The finding is helping scientists interpret how past impacts effected life on Earth. |
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Solar System Bounce
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| Topic: Meteorites, Comets and Asteroids |
05/07/08 |
| Summary: A new computer model may demonstrate how comets from the outer solar system are sent into the inner solar system where they can impact with planets. The model could also explain why the Earth might have experienced cycles of high impact activity throughout its history. |
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Osmium Tracks Earth Impacts
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| Topic: Meteorites, Comets and Asteroids |
04/16/08 |
| Summary: Scientists have developed a new way of determining the size and frequency of meteorites that have collided with Earth in the past. Their work has provided new information about the impact that may have caused the demise of the dinosaurs. |
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