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

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

New potential climate crisis just dropped.

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

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 ...

NASA says Earth is about halfway through its lifespan. Scientists explain how solar changes could affect habitability, oceans, and the planet’s future over billions of years ...

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 ...

Scientists have long known that Earth's core is mostly made of iron, but the density is not high enough for it to be pure ...

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