Press Coverage Hidden Worlds: Astronomers Find Invisible Planet 650 Light-Years Away: Time, September 9, 2011. Astronomers Discover 'Invisible' Planet With New Technique: International Business Times, September 9, 2011. Transit planet search reveals doubly-tilted solar sytem: USA Today, September 9, 2011. NASA's Kepler spacecraft finds "invisible world": Digital Journal.com, September 8, 2011. "Invisible" planet discovered with new technique: Kepler probe detects alien world by its gravitational influence on a neighbor: MSNBC.