In this space wallpaper, NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system.The planets, called Kepler-20e and Kepler-20f, are too ...

Although Kepler 22-b, discovered earlier this year by NASA’s planet-hunting telescope, is like a temperature twin to Earth, a new announcement today reveals two exoplanets that are Earth-like in size.

This story was updated at 2:40 EST. Astronomers on Tuesday (Dec. 20) announced the discovery of the first two Earth-size alien planets — a historic find for sure, but the newfound worlds didn't ...

The first two Earth-like worlds orbiting another star have been detected, although neither are believed to be suitable for life. But if the planets had water in the past, there's a good chance they ...

NASA’s Kepler mission has found the first Earth-size planets orbiting a sunlike star outside our solar system. But they’re too hot to support liquid water — or life. This latest discovery marks a ...

NASA, like we've been reporting, has been throwing some fabulous discoveries with its Kepler mission. On its last quest, Kepler managed to dish out a planet called Kepler-22b, which reportedly is ...

NASA's Kepler mission has discovered the first Earth-size planets orbiting a sun-like star outside our solar system. The planets, called Kepler-20e and Kepler-20f, are too close to their star to be in ...

NASA, like we've been reporting has been throwing some fabulous discoveries with its Kepler mission. For those ... Advisory Alert: It has come to our attention that certain individuals are ...

A rocky planet the same size as the Earth has been discovered orbiting a star like our sun. It is the first time a planet of this size has been detected in another solar system. Scientists have hailed ...

[Photo: NASA/Ames/JPL-Caltech] The Kepler space telescope must be NASA’s most prized possession right now. A few weeks ago, it found several possibly habitable planets in distant solar systems; now it ...

Just two weeks after the confirmation of a planet that's within the habitable zone of a distant star, the Kepler team is back with the discovery of two Earth-sized planets orbiting in what is now a ...