What if Earth has more than one moon? Scientists now believe our planet may be secretly hosting at least six "mini-moons" at ...

"When aliens come to our planet, we realize they're really the thing of nightmares... Which we're gonna give people." Scary!

The exoplanet, Kepler-725c, has 10 times the mass of Earth and is located in the habitable zone of the sun-like star Kepler-725. The discovery is published in Nature Astronomy.

But these old rocks were one of the rarest minerals found on Earth. Until the discovery, only about a snowball-sized amount ...

The LIGO Hanford Observatory near the Tri-Cities and its twin in Louisiana detected ripples of time and space passing through Earth from the most massive collision of black holes ever observed, a ...