... WISE Infrared Andromeda . ... The small world is near opposition (opposite the Sun in the sky) and closest to Earth. ... Why is this moon of Saturn so smooth? This past weekend, humanity's Saturn-orbiting Cassini spacecraft passed as close to Saturn's small moon Calypso as it ever has, and imaged the small moon in unprecedented detail. Pictured above is an early return, raw, unprocessed image of the 20-km long irregularly shaped moon. ... Teide Sky Trails . ... Star Cluster M34 . ...