NASA will hold a live news teleconference on Thursday, April 17, at 2 p.m. EDT (11 a.m. PT/1800 GMT) to unveil a new discover by the Kepler space telescope, which hunts alien planets beyond our solar system. Full Story: Found! First Earth-Size Planet That Could Support Life, Gallery Video: New Earth-Size Planet Could Have Water Complete Coverage Top Story: Found! First Earth-Size Planet That Could Support Life Video: New Earth-Size Planet Could Have Water Earth-Size Planet Kepler-186f, a Possibly Habitable Alien World (Gallery) Exoplanet Kepler-186f: Earth-Size World Could Support Oceans and Life (Infographic) From SETI Astronomer Seth Shostak: Cousin of...