"GJ 1214b is like no planet we know of," study lead author Zachory Berta of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass., said in a statement.

Among our solar system's inhabitants, Neptune is the planet that most closely resembles GJ 1214b, Bean said. The alien planet has a radius 2.5 times the size of Earth's and has about 6.5 times the ...

While studying GJ 1214b, researchers tracked the planet through nearly its entire orbit over the course of about 40 hours, according to NASA. The planet's year takes only 1.6 Earth days.

"GJ 1214b is like no planet we know of," said Zachary Berta of the Harvard-Smithsonian Center for Astrophysics (CfA). "A huge fraction of its mass is made up of water." ...

GJ 1214b has a mass 6.5 times that of Earth and is 2.6 times its radius. By measuring the absorption spectra of the planet’s atmosphere, astronomers were able to shed light onto its composition.

Meet GJ 1214b, the most Earth-like planet ever found outside our solar system. It’s not exactly Earth’s twin: It’s about six times bigger, a whole lot hotter and made mostly of water. But ...

GJ 1214b was discovered in late 2009, but until now, our picture of it has been murky. “It’s been an extremely frustrating planet to study because it has all these clouds in the atmosphere, which ...

The world has been identified as GJ 1214b and after analyzing it astronomers have discovered that it is an Earth-like super-planet located outside of our solar system.

GJ 1214b is a strange planet. It has a radius about 2.7 times that of Earth and a mass roughly eight times greater. It’s bigger than a rocky planet, but not big enough to be a gas giant.

GJ 1214b thus appears to have much more water than Earth does, and much less rock. The alien planet's interior structure is likely quite different from that of our world.

Would Kevin Costner's character in the movie "Waterworld" be at home on this exoplanet? The planet GJ 1214b was discovered in 2009 and was one of the first planets where an atmosphere was detected ...