... Comet Shoemaker-Levy 9, named after its co-discoverers, was often referred to as the "string of pearls" comet. ... This striking but unfamiliar looking picture of the familiar Orion region of the sky was produced using survey data from the InfraRed Astronomical Satellite (IRAS). ... Volcanos on Mars: Elysium Region . ... Antares . ... Antares is a huge star. In a class called red supergiant, Antares is about 700 times the diameter of our own Sun, 15 times more massive, and 10,000 times brighter. ...