NASA's Spitzer and WISE telescopes find close, cold neighbor of the Sun

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.

Astronomers discover our third closest neighbor

Astronomers have found the closest solar system to our own to be discovered in nearly a century - the third-closest ever found, in fact.