When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The Earth is missing some of its crust, and now scientists have a new lead on what's to blame: A ...

Learn why aurora colors glow green and red, how ionized particles collide with atmosphere layers, the physics of green aurora ...

Scientists may finally be closing in on the origins of two colossal, mysterious structures buried nearly 1,800 miles inside Earth—hidden formations that have puzzled researchers for decades. New ...

Earth's crust ranges from 5 to 70 kilometers in thickness and serves as the planet's outermost layer. This thin shell represents less than one percent of Earth's total mass, yet it's the only layer we ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Deep inside Earth ...

Earth is our home planet, and it's the only place in the universe where we know for certain that life exists. Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Earth’s core is pretty dynamic. Its spin speeds up and slows down ...

TEMPE, Ariz. — In a laboratory shrouded by heavy black curtains hung with danger signs, scientists are conjuring the scorching-hot, high-pressure conditions inside planets. To start, they squeeze tiny ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Scientists who just ...