Earth's core, which measures about 4,300 miles across, is comprised mostly of iron and some nickel, along with a few other elements. The outer core remains liquid, enveloping the solid inner core.

An analysis of Hawaii’s volcanic rocks revealed Earth’s core is leaking gold and other precious metals, a study found. The elements emerge when ocean islands form.

Scientists say they’ve confirmed Earth’s inner core has been slowing down. Here’s what it could mean — and why the topic has been the subject of fierce debate.

Earth's skies pulse in sync with the sun's solar flares; Hidden in the chemical composition of ancient rocks are clues that Earth's magnetic field is a dynamic, shifting phenomena.

The moon once drifted thousands of miles farther away, and Earth's days got 2.2 hours longer, a new study finds. When you purchase through links on our site, we may earn an affiliate commission ...

Welcome to Earth in 500,000 gigabytes. On Friday night, Darren Aronofsky’s newest film, Postcard From Earth, had its world debut at The Sphere in Las Vegas, and it’s not hyperbole to say that ...

The length of Earth's day is only 24 hours, rather than over 60 hours, thanks to a temporary balance between the gravitational tidal forces from the moon and the sun. When the moon formed about 4. ...