The Kepler spacecraft has made two landmark discoveries of Earth-like planets this month. But determining whether such planets can sustain life would require years of additional study.
These planets, while roughly the size of our planet Earth, are circling very close to their star, giving them fiery temperatures that are most likely too hot to support life, researchers said.
NASA's Kepler spacecraft has spotted a pair of rocky Earth-sized planets orbiting a distant star. How do you find a new planet?
Scientists have discovered a pair of Earth-sized planets orbiting a distant star. Could these planets, dubbed Kepler 20e and Kepler 20f, support life?
For the first time, NASA's Kepler spacecraft has found two Earth-size planets outside our solar system – a landmark achievement. But the planets are in a solar system that baffles scientists and could overthrow current models of planet formation.