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." ...

Why do some places wait 1,000 years to see a total solar eclipse while others get two in a decade? The surprising orbital ...

Sediments from Scotland hint that ocean-atmosphere interactions continued more than 600 million years ago despite widespread ice.

Scientists at Stanford have unveiled the first-ever global map of rare earthquakes that rumble deep within Earth’s mantle rather than its crust. Long debated and notoriously difficult to confirm, ...

On Jan. 31, 1958, Explorer 1 became the first satellite launched by the United States. Its primary science instrument, a ...

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

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

“What keeps me up at night is the asteroids we don’t know about," said NASA's planetary defense chief.

With an estimated 6 sextillion kilograms of the stuff—that’s 21 zeroes by the way—the Earth’s core is another example of why hydrogen is the most abundant element in the universe.

The Earth's magnetic field and oxygen evolved together over 540 million years, according to a major NASA study.