Three Earth-Sized Planets Found Orbiting a Nearby Ultracool Star

The search for Earth-like planets continues, as astronomers scour the sky examining stars for telltale clues of orbiting worlds. Most of the exoplanets found are big, like Jupiter, because they're the easiest to detect. But our technology has become better and more clever over the years, and smaller planets have been found, including many roughly the size of Earth. That search took a cool turn this week... literally. A team of astronomers announced they have found not one but three Earth-sized p...