A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

Kepler was one of the most successful exoplanet-hunting missions so far. It discovered 2,600 confirmed exoplanets—almost half ...

An curved arrow pointing right. NASA announced Tuesday it has discovered a planet that is a lot like Earth, and could possibly support life. Produced by Matthew Stuart Follow TI Video: On Facebook ...

Two significant additional discoveries-the identification of twin water worlds, Kepler-138c and d, and the existence of water ...

However, the newly discovered planet, Kepler-442b ... meaning it’s larger than Earth but smaller than gas giants like Neptune ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

"The three previously known planets that orbit the star Kepler-51 are about the size of Saturn but only a few times the mass of Earth, resulting in a density like cotton candy. We think they have ...

The Kepler telescope detects tiny dips in the brightness of stars as planets pass between them ... sun and could in theory show us what Earth could be like that far down the line, as aging stars ...

For centuries, planets beyond our solar system—called exoplanets—existed only in theory and science fiction. It seemed nearly impossible to detect planets light-years away, since the ...

Kepler-62f (also known ... was something in between those two planets. It seems like wasted real estate,” Kane says. So Kane dropped a fictional super-Earth in that gap to see what would happen.