contribution to the number of exoplanets over 4000 new planetary candidates confirmed the existence of more than 1,000 exoplanets over 4000 new planetary candidates thousands of exoplanets How many exoplanets has Kepler discovered? thousands more than 2,000 confirmed exoplanets more than 1,000 exoplanets 4,600 candidate planets and 2,300 confirmed planets only a few are potentially habitable 'How many exoplanets has Kepler discovered?' exciting opportunity 'How many exoplanets has Kepler discovered?' according to NASA thousands of exoplanets Kepler has identified more than 4,500 exoplanets 根據美國航空暨太空總署 more than 4,600 planet candidates confirmed confirmed thousands