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Hot Topic Solar System Meteorites, Comets and Asteroids
 
How To Destroy an Asteroid
Topic: Meteorites, Comets and Asteroids
12/05/08
Summary: Researchers are carefully observing asteroids in order to determine their composition - and the best way to protect the Earth from any that might be headed our way in the future.

Marco Polo and Meteorites
Topic: Meteorites, Comets and Asteroids
12/01/08
Summary: In this podcast, Beda Hofmann explores the links between meteorites and astrobiology, and discusses Europe's proposed Marco Polo Mission to an asteroid.

The Solar System in a Grain of Dust
Topic: Meteorites, Comets and Asteroids
11/21/08
Summary: In 2004, NASA's Stardust mission returned to Earth with particles of the comet Wild 2. Now these particles are helping scientists understand how a giant cloud of gas and dust collapsed to form our solar system 4.5 billion years ago.

Molten Magnetic Meteorites
Topic: Meteorites, Comets and Asteroids
11/01/08
Summary: Meteorites that are among some of the oldest rocks known are providing clues about the conditions of the early solar system. The insight they are yielding is changing longstanding ideas about how planets form.

STONE-6, Microbes 0
Topic: Meteorites, Comets and Asteroids
09/30/08
Summary: Using an artificial meteorite, scientists have determined that organisms in meteorites wouldn't survive a fall to Earth. However, the study does show that meteorites could still retain biosignatures that would provide evidence for life on other worlds.

Earth's Platinum Standard
Topic: Meteorites, Comets and Asteroids
09/24/08
Summary: By comparing the composition of meteorites and planets like Earth and Mars, scientists are providing clues about planetary formation in the early solar system. The study also reveals how some of Earth's rarest metals may have come from space.

Solar Shift
Topic: Meteorites, Comets and Asteroids
09/09/08
Summary: Forty years ago, strange oxygen isotopes in a meteorite were found to be different than any known planetary rock – including those from Earth and Mars. Scientists are getting closer to solving the riddle, and providing new information about the early solar system in the process.

Cometary Missing Link
Topic: Meteorites, Comets and Asteroids
09/07/08
Summary: Scientists have identified an interesting solar system object whose orbit is backwards around the sun and which may help us understand the origin of certain comets. The finding also could yield clues about the early solar system.

Earth's Cosmic Dust
Topic: Meteorites, Comets and Asteroids
09/06/08
Summary: The origin of microscopic meteorites in cosmic dust has been revealed. A new study shows that some of the cosmic dust constantly falling to Earth originates from the asteroid belt between Jupiter and Mars.

Meteorite Fast Track
Topic: Meteorites, Comets and Asteroids
08/23/08
Summary: The majority of asteroids that pass near the Earth have a different composition than most of the meteorites that actually hit our planet. Astronomers now think they may have figured out why this is the case.

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