CAPE CANAVERAL- - Scientists using NASA's Kepler space telescope have found the best candidates yet for habitable worlds beyond the solar system, including a pair of potentially life-friendly planets orbiting the same star, officials said on Thursday.
The planets join a list of about 700 confirmed extra-solar planets discovered since 1995.
The new additions include a pair of planets orbiting a star called Kepler-62, located about 1,200 light years away in the constellation Lyra.
Kepler-62's two outermost planets, both about 1.5 times the size of Earth, are located the right distance from their parent star for water - if any exists - to be liquid on the surface. Water is believed to be necessary for life.