Today, NASA announced a breakthrough addition to the catalog of new planets. Researchers using Kepler have confirmed 715 new worlds, almost quadrupling the number of planets previously confirmed by the planet-hunting spacecraft. Some of the new worlds are similar in size to Earth and orbit in the habitable zone of their parent stars. <br /> <br />Details can be found at http://planetquest.jpl.nasa.gov/ Visit http://science.nasa.gov/ for more. <br /> <br />Credit: NASA
