NASA Telescopes Discover Coldest 'Brown Dwarf' Ever Known In Sun's Neighborhood

Astronomers have used NASA's Wide-field Infrared Survey Explorer, or WISE, and the Spitzer Space Telescope to discover a new star-like body that's "as frosty as Earth's North Pole," the space agency announced Friday. The object, which is categorized as the coldest "brown dwarf" ever known, is named WISE J085510.83-071442.5. According to scientists, the images from the space telescopes also revealed that star-like body is 7.2 light-years away from Earth, making it the fourth-closest system to the...