The Earth is the only cradle of life we know of. Through its billions of years of existence, it's seen some seriously bad weather, from billions of lightning strikes a year to planet-wide ash and dust ...

This illustration provided by NASA in 2017 depicts the planet 55 Cancri e, right, orbiting its star. A thick atmosphere has been detected around the planet that’s twice as big as Earth in a solar ...

Is our Milky Way galaxy home to other planets the size of Earth? Are Earth-sized planets common or rare? NASA scientists seeking answers to those questions recently revealed their discovery. “We went ...

Astronomers have discovered an Earth-size planet orbiting an ultracool red dwarf star similar in size to Jupiter. The red dwarf, located some 55 light-years away, is 100 times less bright than the sun ...

The exoplanet Gliese 12 b is tantalizingly close and moderately warm, situated just 40 light-years away around a red dwarf star. The potentially habitable planet could be a good place to search for ...

NASA scientists announced Monday that they had found the first Earth-sized, potentially habitable planet. The planet, currently known as TOI 700 d, is about 100 light years away. It is orbiting a star ...