News

  1. Astronomy

    Fleeting Flash: Pinpointing a short gamma-ray burst

    An invisible, highly energetic flash detected by a spacecraft early this week may have given astronomers their first glimpse of two neutron stars colliding to forge a black hole.

    By Ron Cowen
  2. Animals

    Built for Blurs: Jellyfish have great eyes that can’t focus

    Eight of a box jellyfish's eyes have superb lenses, but their structure prevents them from focusing sharply.

    By Susan Milius
  3. Health & Medicine

    Proteins’ Promise: New test could reveal early ovarian cancer

    A screening test for ovarian cancer shows promise in preliminary trials.

    By Nathan Seppa
  4. Physics

    Galactic data shore up a constant

    Alpha, a constant of nature found to vary in some astrophysical studies, actually holds steady, according to the first survey of galaxies used to evaluate alpha's constancy.