Science on the Surface of a Comet Telescopes Team Up to Find Distant Uranus-Sized Planet Through Microlensing NASA’s Spitzer Confirms Closest Rocky Exoplanet Unusual Red Arcs Spotted on Icy Saturn Moon ‘Carbon sink’ detected underneath world’s deserts NASA Mars Orbiter Preparing for Mars Lander’s 2016 Arrival ‘Bathtub Rings’ Suggest Titan’s Dynamic Seas NASA’s New Horizons Team Finds Haze, Flowing Ice on Pluto NASA’s Curiosity Rover Inspects Unusual Bedrock NASA’s Kepler Mission Discovers Bigger, Older Cousin to Earth