An international group of astronomers reporting in the journal Nature has discovered two extrasolar planets circling Sun-like stars in the open star cluster NGC 6811. This image shows the newly discovered exoplanets Kepler-66b and Kepler-67b in the open star cluster NGC 6811 (Michael Bachofner) NGC 6811 is located about 3,000 light-years away towards the constellation Cygnus. The newly discovered alien worlds, labeled Kepler-66b and Kepler-67b, show...