Uncategorized

  1. Planetary Science

    Saturn has two hexagons, not one, swirling around its north pole

    NASA’s Cassini spacecraft spied a vortex growing high over Saturn’s north pole, whose hexagonal shape mirrors a famous underlying cyclone.

    By Christopher Crockett
  2. Health & Medicine

    50 years ago, a pessimistic view for heart transplants

    Surgeon Christiaan Barnard performed the first successful human-to-human heart transplant in 1967. In 1968, he predicted that patients would survive five years at best. Fortunately, he was wrong.

    By Bethany Brookshire
  3. Astronomy

    Readers’ interest piqued by Parker Solar Probe, general relativity and more

    Readers had questions about NASA's Parker Solar Probe, Einstein's general relativity theory and underwater cables used as earthquake sensors.