Tag: Water world

  • Nation & World

    Earth may have been a water world 3 billion years ago

    A new study suggests Earth’s primordial ocean 3 to 4 billion years ago may have been much larger than it is today, and possibly covered the entire planet.

    5 minutes
    Earth image.
  • Nation & World

    In distant space, a water world

    Observations by NASA’s Hubble Space Telescope have added a new type of planet to the mix. By analyzing the previously discovered world GJ1214b, astronomer Zachory Berta of the Harvard-Smithsonian Center for Astrophysics and colleagues proved that it is a water world enshrouded by a thick, steamy atmosphere.

    3 minutes