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  • Europa: Chewy or Crunchy?
    For geophysicist William B. Moore, the question of whether life exists on Jupiter's moon Europa boils down to whether the moon's center is chewy or crunchy.
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  • Earth from Afar: A Tiny Flickering Dot
    With over 70 planets identified around distant stars, astronomers are now looking for ways to classify which ones are most like Earth -- that is to say, the ones most likely with biological potential.
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  • Why Microbes Matter
    Research on Mars can lead to advances in biotechnology and medicine, bring us closer to understanding our origins.
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  • How Jupiter Got Big
    How did the largest planet in our solar system form? New theories on how planets like Jupiter form put traditional theories to the test.
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  • Living on Fools Gold
    Reseachers study chemolithotrophic bacteria that survive by getting its energy by oxidizing pyrite, also known as "fool's gold".
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  • Simulating a Martian Colony in the Arctic
    Once again, an island in the Canadian high arctic, a polar desert of a world, will serve this summer as a little bit of Mars on Earth.
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  • Clues to the Last Common Ancestor
    Molecular detectives have traced human ancestry back to the so-called Mitochondrial Eve, the last female common ancestor. More recent research has posited a Y-chromosome Adam, the last male common ancestor.
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  • Europe Heads for Mars
    The Beagle 2, a compact, lightweight lander carried on the European Space Agency's (ESA) Mars Express, will search for signs of life on the red planet.
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  • Roses for the Red Planet
    Scientists discuss the importance and the possible risks of seeding the Red Planet.
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  • Bugs From Hell
    Geochemists and microbiologists are delving into the details of extreme biochemistry deep within the Earth, where chemical and metabolic processes go at glacial pace, and life appears to be completely disconnected from the photosynthesis-based biological cycles that dominate surface life.
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  • The Meaning of Life
    Sitting beneath a dark night sky, looking up at the vast array of stars, what human has not wondered, "Are we alone?"
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  • Odyssey Finds Large Concentrations of Water on Mars
    The first results from the Mars Odyssey are in, and they reveal that the Southern Hemisphere of the Red Planet has a lot of water ice just below the surface.
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  • Dedication of the Carl Sagan Center
    NASA Ames Research Center dedicates a site for the Carl Sagan Center for the Study of Life in the Cosmos.
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  • Focus on Europa
    Scientists from a variety of disciplines met recently to consider the possibility of life on Europa, and to plan how to look for it.
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  • NASA Scientist Finds Some Meteorites Not Sugar-free
    A discovery by a NASA scientist of sugar and several related organic compounds in two carbonaceous meteorites provides the first evidence that another fundamental building block of life on Earth may have come from outer space.
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