NASA sheds some light on Jupiter’s mysterious companion asteroids

Jupiter is not alone out there. Aside from its 62 moons, the massive gas giant is joined by two clumps of asteroids that orbit around the sun in the same orbit — what are called the Jovian Trojans. Not much is known about these ancient objects, but new data from NASA's Wide-field Infrared Survey Explorer (WISE) is… » 10/16/12 8:15am 10/16/12 8:15am