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Hot Topic Solar System Meteorites, Comets and Asteroids
Abundant Ammonia in Ancient Asteroid
Topic: Meteorites, Comets and Asteroids
Summary: 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.

Meteorite Tells of How Planets Are Born in a Swirl of Dust
Topic: Meteorites, Comets and Asteroids
Summary: 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.

19 Asteroids Bagged in One Night
Topic: Meteorites, Comets and Asteroids
Summary: 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.

How Kleopatra Got its Moons
Topic: Meteorites, Comets and Asteroids
Summary: 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.

Man-Made Comet Crater
Topic: Meteorites, Comets and Asteroids
Summary: 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.

Two-timing spacecraft has date with another comet
Topic: Meteorites, Comets and Asteroids
Summary: 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.

WISE Comet and Asteroid Count
Topic: Meteorites, Comets and Asteroids
Summary: 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.

Meteorites Speak of Water and Methane on Mars
Topic: Meteorites, Comets and Asteroids
Summary: Scientists have discovered new evidence that water once flowed near the surface of Mars by examining rare martian meteorites. The information could help astrobiologists understand whether or not Mars was once habitable for life as we know it.

Shining Light on Asteroid Deflection
Topic: Meteorites, Comets and Asteroids
Summary: If an asteroid was heading toward Earth, would it better to destroy it or alter its trajectory? One team of scientists is studying how to divert asteroids by heating their surfaces. The research could be important in the coming decades as the asteroid Apophis approaches our planet.

Meteorites May Answer Life's Chirality Question
Topic: Meteorites, Comets and Asteroids
Summary: New research shows that a wide range of asteroids were capable of creating the kind of amino acids used by life on Earth. The findings support theories that meteorites may have played a role in setting the preference for 'left-handed' amino acids early in life's origin on Earth.

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