News

  1. Earth

    Animal ancestors may have survived ‘snowball Earth’

    Chemical fossils in Precambrian sedimentary rock push back the first date for animal life.

    By Rachel Ehrenberg
  2. Space

    Early galaxy bulges in the middle

    By tracing star birth in a galaxy that existed when the universe was less than 1 billion years old, researchers have captured what appears to be the formation of a key galactic component — a central concentration of stars known as the bulge.

    By Ron Cowen
  3. Life

    Earliest whales gave birth on land

    Recently discovered fossils of a protowhale help fill in gaps in the land-to-water transition.

    By Sid Perkins
  4. Space

    Smallest known transiting planet discovered

    Astronomers have found the smallest known extrasolar planets that is blocking light from its parent star.