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Hot Topic Solar System Meteorites, Comets and Asteroids
Comet Shows Evidence of Space Weathering
Topic: Meteorites, Comets and Asteroids
Dust grains from Comet Wild 2 are helping scientists reappraise the traditional picture of comets. Understanding the composition of comets can help astrobiologists determine their potential role in the origins of life on Earth.

Deflecting Asteroids with Lasers
Topic: Meteorites, Comets and Asteroids
Engineers are developing an innovative technique based on solar-powered lasers that could radically change asteroid deflection technology. Such technology could help prevent impact disasters in the future.

Asteroid 2011 AG5: A Reality Check
Topic: Meteorites, Comets and Asteroids
Asteroid 2011 AG5 was discovered in January 2011, and as scientists define its orbit, they expect that it will not pose a problem for the Earth in the foreseeable future.

Impact May Have Caused Global Cooling
Topic: Meteorites, Comets and Asteroids
A team of international scientists has uncovered evidence that a large impact occurred on Earth around 13,000 years ago. The impact may have corresponded with an unusually cold period in Earth's history known as the Younger Dryas.

Project NEOShield
Topic: Meteorites, Comets and Asteroids
Over the next three years, the NEOShield project will investigate how to prevent dangerous impacts with asteroids and comets that could hit Earth in the future. The study also could lead to a better understanding of the composition, structure and surface texture of these space objects.

To Land on a Comet
Topic: Meteorites, Comets and Asteroids
In 2014, the European Rosetta spacecraft will enter orbit around a comet and land a probe on its surface. Rosetta will have a front-row seat as the comet swings closer to the Sun and is affected by the fierce solar heat.

Vesta is Cold and Dark Enough for Ice
Topic: Meteorites, Comets and Asteroids
Half of the giant asteroid Vesta is expected to be so cold and to receive so little sunlight that water ice could survive.

Mars Meteorites Fall in Morocco
Topic: Meteorites, Comets and Asteroids
In July 2011, a rare martian meteorite fell to Earth - the first in about 50 years. The meteorite could hold clues to the history of the martian environment and the potential for life on the red planet.

Catching a Comet's Death on Camera
Topic: Meteorites, Comets and Asteroids
Last summer, scientists observed a comet as it flew into the Sun. The comet's scorching end provided a new way to estimate the size and mass of these objects.

Meteorites from Vesta
Topic: Meteorites, Comets and Asteroids
Data from the Dawn spacecraft could help astrobiologists understand how pieces of the asteroid Vesta ended up on planet Earth.

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