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  1. Astronomy

    Sound of the fury

    On Oct. 28, the Saturn-bound Cassini spacecraft recorded the radio wave "sound" of a powerful solar flare as it raced toward Earth.

    By Ron Cowen
  2. Astronomy

    Chow Down! Milky Way gobbles its closest known neighbor

    A tiny, newly discovered galaxy being shredded by the gravity of the Milky Way is our galaxy's closest known neighbor, residing just 42,000 light-years from the Milky Way's center.

    By Ron Cowen

  3. The good side of a viral infection?

    Hepatitis A infections may protect people from allergies and asthma.

    By John Travis
  4. Tech

    Laser beam powers flying machine

    Caught in a laser's glare on its maiden launch, a lightweight drone with a solar panel demonstrated that continuous flight powered by ground-based lasers is possible.