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  1. Space

    Ceres may be an asteroid impersonator

    The largest asteroid in the solar system may not be an asteroid at all but a cometlike relative of Pluto that came in from the cold several billion years ago.

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  2. Space

    Central star is no dim bulb

    Observing the dusty center of the Milky Way, astronomers have the second brightest star known in the galaxy

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  3. Health & Medicine

    Asthma oddity

    Helicobacter pylori, a common microbe that colonizes the stomach, might protect against asthma.

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  4. Life

    Young tasmanian devil moms

    Tasmanian devils have started mating much earlier in response to an epidemic, called facial tumor disease, that is wiping out much of their population.