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  1. Astronomy

    Four’s a crowd

    Astronomers have found a quartet of stars packed into a region smaller than Jupiter's orbit around the sun.

    By Ron Cowen
  2. Astronomy

    Gravity at play: A double lens

    Astronomers have discovered an extraordinarily rare double cosmic mirage.

    By Ron Cowen
  3. Astronomy

    Case of the misshapen disk

    A deformed disk around a young star may have gotten its swept-back appearance as the result of a collision with a dense gas cloud.

    By Ron Cowen

  4. 9/11 attacks stoked U.S. heart ailments

    People who experienced serious stress reactions shortly after the September 11, 2001, terrorist attacks also displayed markedly elevated rates of new heart and blood vessel ailments over the next 3 years.