The possible ninth planet is thought to be quite substantial with a mass around ten times that of Earth and a radius that’s
NASA's Kepler mission just discovered the first near-Earth-size planet in the “habitable zone” around a sun-like star.
"Finding Kepler-421b was a stroke of luck," study lead author David Kipping, of the Harvard-Smithsonian Center for Astrophysics
"One of the surprising things in our field is that planets can be very close to their stars," study co-author Dr. Josh Winn
The object is an interesting test case for theories of planet formation, scientists say. Based on observations of this system
According to NASA, the research team also found that unlike our solar system, which features the larger and more gaseous
NASA announced Monday the discovery of Kepler-22b, the first planet the Kepler spacecraft has discovered in the habitable
Scientists connected with NASA's Kepler space telescope have announced the discovery of a planet orbiting a Sun-like star that may resemble our own world. Its name is Kepler-22b.
By contrast, Earth is about 150,000,000 km (93 million miles) from its own sun. Astronomers frequently discover new planets
The Kepler 16 star system is nearly 200 times closer than Tatooine is reputed to be. But there's this difference: this planet is for real.
WATCH: Scientists say the planet exists about 4,000 light years away from Earth, and is probably the remnants of a once-large
Johny Setiawan, the team's head researcher told Space.com that the discovery of HIP 13044b was a surprise. "I was not expecting