Scientists analyzing data from the Kepler space telescope have discovered a first: an Earth-size planet orbiting in the habitable zone of its parent star, researchers announced Thursday. The planet is ...

The diagram compares the planets of the inner solar system to Kepler-186, a five-planet system about 500 light-years from Earth in the constellation Cygnus. The five planets of Kepler-186 orbit a star ...

NASA scientists say the Kepler space telescope may have discovered the most “Earth-like” planet yet. Circling a star about 500 light-years away, planet Kepler 186-F may be the right temperature to ...

This artist illustration shows what it might be like to stand on the surface of the planet Kepler-186f, the first-ever Earth-size planet to be found in the habitable zone of its star. It's the brass ...

With NASA's Kepler spacecraft having just recently discovered its 1,000th alien planet, the agency's Jet Propulsion Laboratory has decided to bring some of the most unique exoplanets into the ...

A newly discovered rocky planet may be the most Earth-like yet found in another solar system, say scientists. Kepler-186f is almost the same size as Earth and occupies its parent star’s “habitable ...

Scientists analyzing data from the planet-hunting Kepler space telescope have chalked up another first, finding an Earth-size world orbiting in the habitable zone of its parent star, researchers ...

Scientists have found an Earth-sized world they've named Kepler-186f orbiting in a life-friendly zone around a distant star called Kepler-186. The discovery, announced on Thursday, is the closest ...

This size and scale of the Kepler-452 system compared alongside the Kepler-186 system and our solar system. By comparison, Kepler-186 is a miniature solar system that would fit entirely inside the ...