Relative sizes of the newly discovered habitable-zone planets and Earth. Left to right: Kepler-69c, Kepler-62e, Kepler-62f and Earth (except for Earth, these are artists' renditions). Image credit: ...

PASADENA, Calif. — NASA’s Kepler mission has discovered two new planetary systems that include three super-Earth-size planets in the “habitable zone,” the range of distance from a star where the ...

The curious minds at What If investigate whether Kepler-69c could be the key to life beyond Earth, exploring habitability and ...

There is only one planet we know of, so far, that is drenched with life. That planet is Earth, as you may have guessed, and it has all the right conditions for critters to thrive on its surface. Do ...

The curious minds at What If explore life on Kepler 69c if it exists, imagining the alien landscapes, climates, and potential inhabitants of a distant world.

For decades, the names given to newly discovered planets have almost always failed to live up to the excitement these celestial finds represent. (Take for example forgettable monikers such as ...