Earth-sized planet discovered in 'habitable zone'

Washington - The hunt for potential life in outer space has taken a step forward - an international team of researchers has discovered the first Earth-sized planet within the "habitable zone" of anot...

Earth-like exoplanet discovered - completes orbit in mere 8.5 hours

WASHINGTON - U.S. researchers said Monday that they have discovered an Earth-sized exoplanet that orbits its host star in the time it takes you to complete a single workday, or get a full night's sle...