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 ...

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 ...

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 researchers have spent generations decoding the Grand Canyon, turning its cliffs and chasms into one of the clearest ...

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

Geological evidence of the transition when Earth was plunged into a planetary-wide deep-freeze discovered in ancient Scottish rocks. When you purchase through links on our site, we may earn an ...

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

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 ...

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

NASA's 1967 ATS-3 satellite captured Earth's first true-colour image, revolutionizing weather forecasting and planetary understanding. This breakthrou ...