Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...

Around 4.5 billion years ago, a planet called Theia is thought to have smashed into newborn Earth. The messy collision kicked ...

Researchers have documented 55 instances of "mini lightning" over two Martian years by eavesdropping on the whirling wind ...

Scientists have detected tiny lightning bolts on Mars for the first time — they were found discharging around NASA's ...

The picture-perfect launch of twin Escapade orbiters bound for Mars presages a fantastical new age in exploring the planets, ...

An international team has made a significant breakthrough in understanding the tectonic evolution of terrestrial planets.

A hyper-realistic picture of life during that Pleistocene era emerges with Apple TV’s five-part, computer-driven “Prehistoric ...