NASA’s Wide-field Infrared Survey Explorer (WISE) and Spitzer Space Telescope have discovered what appears to be the coldest brown dwarf known – a dim, star-like body that surprisingly is as frosty as Earth’s North Pole. Images from the space telescopes also pinpointed the object’s distance to 7.2 light-years away, earning it the title for fourth …

The largest moon in our solar system, a companion to Jupiter named Ganymede, might have ice and oceans stacked up in several layers like a club sandwich, according to new NASA-funded research that models the moon’s makeup. Previously, the moon was thought to harbor a thick ocean sandwiched between just two layers of ice, one …

Titan, Europa, Io and Phobos are just a few members of our solar system’s pantheon of moons. Are there are other moons out there, orbiting planets beyond our sun? NASA-funded researchers have spotted the first signs of an “exomoon,” and though they say it’s impossible to confirm its presence, the finding is a tantalizing first …

A breathtaking new mosaic from ESA’s Mars Express shows a stunning swirling field of dark dunes cascading into sunken pits within a large impact crater. The mosaic was created from two images and focuses on the 108 km-wide Rabe crater. The region is 320 km to the west of the large Hellas impact basin, about halfway …

After a year-long competition among high school teams across the country, evaluators from NASA, Lockheed Martin and the National Institute of Aerospace have selected Team ARES, from the Governor’s School for Science and Technology in Hampton, Va., as the winner of the high school portion of the Exploration Design Challenge (EDC). The announcement Friday came …

Using NASA’s Kepler Space Telescope, astronomers have discovered the first Earth-size planet orbiting a star in the “habitable zone” — the range of distance from a star where liquid water might pool on the surface of an orbiting planet. The discovery of Kepler-186f confirms that planets the size of Earth exist in the habitable zone …