The comet is now racing away from the sun following a close flyby on Jan. 20.

In the whole history of Earth's climate, few events are as extreme as those that geologists call "Snowball Earth." ...

New potential climate crisis just dropped.

The object is hurtling towards the Earth at a zippy 12,616 miles per hour, according to data from the space agency.

Shrinking lakes in Tibet likely woke up long-dormant tectonic faults, a new study finds. The findings strengthen the link ...

As much as 45 oceans’ worth of hydrogen may be in Earth’s core, scientists reported, suggesting most of Earth’s water was ...

"We don’t know where they are,” said NASA’s planetary defense officer Kelly Fast at the AAAS conference in Arizona this week.

Even when Earth was locked in its most extreme deep freeze, the planet’s climate may not have been as silent and still as ...

Tiny zircon crystals are revealing that Earth’s earliest history may have included surprisingly complex tectonic activity.

A new study analyzes three asteroid and two meteorite samples to see if space rocks smacking into Earth could’ve helped ...

Gravity feels reliable—stable and consistent enough to count on. But reality is far stranger than our intuition. In truth, the strength of gravity varies over Earth's surface. And it is weakest ...

Astronomers have searched the skies for signs of extraterrestrial technology for decades. These searchers since 1960 have scanned the Milky Way for radio waves, optical flashes, infrared heat and ...