Meteorites,Comets and Asteroids

  • A Taste for Comet Water
    When Comet LINEAR broke apart last year it revealed what many scientists thought all along: Water in Earth's oceans could have come from outer space.
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  • A Taste for Comet Water
    When Comet LINEAR broke apart last year it revealed what many scientists thought all along: Water in Earth's oceans could have come from outer space.
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  • The Mass Extinction that Left the Dinosaurs Standing
    A mass extinction about 200 million years ago destroyed at least half of the species on Earth, but left the dinosaurs standing.
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  • The Birth and Death of Embryonic Planets
    Researchers study how planets form around stars in the Orion Nebula, hoping to understand better how planets in our own solar system formed.
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  • Was Johnny Appleseed a Comet?
    A new experiment suggests that comet impacts could have sowed the seeds of life on Earth billions of years ago.
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  • An Astronomy First: Telescopes Double-team Hawaiian Night Sky
    Proving that two telescopes are better than one, NASA astronomers have gathered the first starlight obtained by linking two Hawaiian 10-meter telescopes.
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  • A Shortage of Planets
    When they turned the Hubble Space Telescope on a distant globular cluster of stars, astronomers expected to find fifteen or twenty planets. They found zero.
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  • Apocalypse Then
    A violent collision with a space rock, like the one that doomed the dinosaurs, may have also caused our planet's greatest mass extinction 250 million years ago.
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  • A Visit to Cupid for Valentine’s Day
    On February 12, NEAR Shoemaker becomes the first spacecraft to land on an asteroid. Its findings may tell us something about our planet, our solar system, and solar systems beyond our own.
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  • More Distant Planets Discovered
    Imagine discovering eight new worlds outside our solar system while the rest of the world is on summer vacation. See what's out of this world, thanks to the University of Texas at Austin's McDonald Observatory and the European Southern Observatory.
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  • Leonid Meteors Yield Rich Astrobiology Research Results
    In search of meteor showers, an airborne research mission indicates that the chemical precursors to life found in comet dust into early Earth's atmosphere.
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  • Life Under Bombardment
    Does Greenland give a clue as to whether life was seeded twice: 'stock' cultures surviving one big impact event? Life Under Bombardment looks for the evidence of our terrestrial past.
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