Excerpt: "Scientists have discovered a new Earth-sized planet in a star’s habitable zone—the region where liquid water could exist on its surface. The discover

Excerpt: "Scientists have discovered a new Earth-sized planet in a star’s habitable zone—the region where liquid water could exist on its surface. The discovery was made using data from the now-retired Kepler Space Telescope. Out of all the exoplanets found by Kepler, this new world—located 300 light-years from Earth—is most similar to Earth in size and estimated temperature."