Earth 2.0: Nasa says scientists have found 'closest twin' outside solar system

Using four years' worth of data from the Kepler space telescope, researchers announce the new exoplanet along with 12 possible 'habitable' others

Scientists on the hunt for extraterrestrial life have discovered "the closest twin to Earth" outside the solar system, Nasa announced on Thursday.

Working off four years' worth of data from the Kepler space telescope, researchers from Nasa, the Seti Institute and several universities announced the new exoplanet along with 12 possible "habitable" other exoplanets and 500 new candidates in total.