exoplanetsScienceProbing Space for Aliens Begins Under the Ice Here at HomeScienceIf You Want to Find Aliens, Look for a Colorful PlanetScienceWhy We're Looking for Alien Life on Moons, Not Just PlanetsScienceThe Best Bet for Alien Life May Be in Planetary Systems Very Different From OursScienceAstronomers Get Closer Than Ever in the Hunt for Earth's TwinScienceTop Scientific Discoveries of 2013ScienceExoplanet Discovered to Be Earth-Sized and Covered in LavaScienceNASA's Planet-Hunting Telescope in Critical Condition After Hardware FailureScienceExtreme Exoplanet-Hunting Telescope to Go Online This FallScienceRecord-Breaking Exoplanet Is Just Barely Bigger Than the MoonScienceUnblinking Baby Telescopes Will Hunt Exoplanets for CheapScienceRogue Planet Confirmed Orbiting Around 'Eye of Sauron'Science15 Potentially Habitable Planets Discovered by Amateur AstronomersScienceTop Scientific Discoveries of 2012Science5 Exoplanets May Orbit Nearby Sun-Like Star Tau CetiScienceWater Worlds, Tatooines, and Earth Twins: Planet-Hunting Kepler Telescope's Greatest HitsScienceAstrophysicists Find First Nomadic PlanetScienceSuper-Earth in 6-Planet System May Have Oceans, LifeCultureStoryboard Podcast: Hunting for Extraterrestrial Intelligence With Geoff MarcyScienceEarth-Sized Planet Discovered Orbiting Around Nearest StarScienceTightly Packed Planets Spotted Around Sun-Like StarScienceNew Exoplanet Is Twice Earth's Size — And Made Largely of DiamondScienceAstronomers Find Double-Planet, Double-Star SystemSciencePlanet-Forming Disk Vanishes Into Thin AirMore Stories