Meteorites,Comets and Asteroids

  • Astronomers have discovered the first known 'Trojan' asteroid that shares an orbit with Earth.
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  • Astronomers have discovered the first known 'Trojan' asteroid that shares an orbit with Earth.
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  • NASA's Dawn spacecraft entered into orbit around the asteroid Vesta on Friday, July 15. The spacecraft is expected to confirm that it performed as planned during a scheduled communications pass that starts today at 23:30 Pacific Time.
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  • As the Dawn spacecraft closes in on the asteroid Vesta, researchers are looking for an 'asteroid moon.'
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  • Astronomers have discovered a new comet that could be visible to the naked eye in early 2013.
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  • Using a technique called gravitational microlensing, astronomers have detected a rocky planet that orbits its host star at a distance further out than most other extrasolar planets detected thus far. The discovery highlights how the microlensing technique could help in the hunt for Earth-like planets.
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  • Data from NASA's EPOXI mission has been used to detail the 'hyperactive' nature of comet Hartley 2. EPOXI witnessed carbon dioxide jets and water vapor, providing new information about the composition of comets and their potential role in life's origins on Earth.
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  • The CoRoT satellite has discovered ten new exoplanets that exhibit a wide variety of masses, densities and orbital parameters. The findings highlight the broad diversity of exoplanets, providing information that is useful in the search for habitable worlds around distant stars.
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  • NASA's Dawn mission is now approaching the protoplanet Vesta. Small, terrestrial bodies like Vesta can teach astrobiologists about the early solar system, the formation and nature of rocky worlds, and the composition of meteorites and their potential role in life's origins on Earth.
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  • Astronomers have found evidence for a planetary system where two giant planets orbit a close pair of suns.
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