Uncategorized

  1. Astronomy

    Let There Be Spin

    X-ray outbursts from two different pairs of stars in our Milky Way are providing clues about how the most rapidly rotating stars in the universe got their spin.

    By Ron Cowen
  2. Planetary Science

    Pristine fragments of asteroid breakup

    Planetary scientists have for the first time precisely dated a collision that smashed an asteroid into fragments.

    By Ron Cowen
  3. Paleontology

    Fossil leaves yield extinction clues

    Analyses of fossil leaves provide more evidence that the mass extinctions that wiped out the dinosaurs 65 million years ago were sudden and probably brought about by an extraterrestrial impact.

    By Sid Perkins
  4. Health & Medicine

    Dynamite discovery on nitroglycerin

    Scientists have found a long-sought enzyme that may be behind nitroglycerin's dilation of blood vessels.