NASA: 715 new planets were found!
Kepler space telescope's discovered four planets that could have liquid surface water, which is the key for life.
Scientists added 715 more planets to the list of known worlds beyond the solar system.
The discoveries were made with the National Aeronautics and Space Administration's planet-hunting Kepler space telescope.
The telescope, launched in 2009, spent four productive years staring at 160,000 target stars for signs of planets passing by, relative to the telescope's line of sight.
Combined with other telescopes' results, the count of planets beyond the solar system, or exoplanets, now numbers nearly 1,700.