Uncategorized

  1. Planetary Science

    A Grand Slam

    A 372-kilogram copper projectile released from NASA's Deep Impact spacecraft successfully slammed into Comet Tempel 1 on July 4, producing some heavenly fireworks.

    By Ron Cowen
  2. Math

    Air Transport Central

    The world's air transportation network resembles the Internet.

    By Ivars Peterson
  3. Health & Medicine

    Epilepsy surgery stands test of time

    Brain surgery for people with severe epilepsy keeps many of these patients free of seizures for decades.

    By Nathan Seppa
  4. Animals

    More junk makes for better dads

    A new analysis links dutiful fatherhood in prairie voles to a stretch of DNA once dismissed as meaningless.

    By Susan Milius
  5. Astronomy

    Rumblings from a dead star

    The burned-out cinder left behind when a massive Milky Way star exploded recently underwent its own outburst.