Uncategorized

  1. Humans

    Letters from the April 24, 2004, issue of Science News

    Extreme makeover The observations in “Wrenching Findings: Homing in on dark energy” (SN: 2/28/04, p. 132: Wrenching Findings: Homing in on dark energy) are of stars and galaxies billions of light-years away and billions of years old. Has anyone ever thought about what the universe out there looks like today? Earl RosenwinkelDuluth, Minn. People have […]

    By Science News
  2. Astronomy

    Puzzle on the Edge: The moon that isn’t there

    Contrary to predictions, Sedna, the most distant object known in the solar system, does not appear to have a moon.

    By Ron Cowen
  3. Materials Science

    Crafty Carriers: Armoring vesicles for more precise and reliable drug delivery

    Materials scientists are designing tough, microscopic drug-delivery vesicles that could reach their targets intact and release their cargoes on cue.