The artist's concept depicts Kepler-186f , the first validated Earth-size planet to orbit a distant star in the habitable zone—a range of distance from a star where liquid water might pool on the ...

Scientists studying the planets dancing around distant stars have found big planets and small ones, burning-hot planets and icy-cold planets. But in their search of other solar systems, astronomers ...

Scientists who have been hunting for another Earth beyond our solar system have come across a planet that's remarkably similar to our world. It's almost the same size as Earth, and it orbits in its ...

Kepler Space Telescope found a lot of data before it malfunctioned in 2013; scientists are now going back through it. With much fanfare, NASA announced this week that its Kepler Space Telescope had ...

Technicians working inside the Astrotech Space Operations facility near NASA's Kennedy Space Center look over the Kepler spacecraft soon after it arrived in Florida in preparation for launch. [Read ...

This artist's concept depicts Kepler-186f, the first validated Earth-size planet to orbit a distant star in the habitable zone where liquid water might pool on the planet's surface. The discovery of ...

Kepler-186 and the Solar System: 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 ...