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Asteroid belt could reveal hidden planets

Astronomers have discovered a giant asteroid belt circling the bright star Vega, a find that may ultimately reveal an entire solar system of planets, scientists say.Full story

'Just-right' asteroid belts for alien life

Asteroid belts similar to the one between Mars and Jupiter appear to be rare beyond our solar system, implying that complex alien life may be rare as well, a new study reports. Full story

Battered asteroid Lutetia a rare relic of Earth's birth

The oddball asteroid Lutetia is a rocky remnant of the material that formed Earth, Venus and Mercury about 4.5 billion years ago, a new study suggests. Full story

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Comet or Asteroid? Big Space Rock Has Identity Crisis

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