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 ...

Peeling back each of Earth's layers reveals a lot about our planet's formation. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space ...

Earth's inner layers have just got a bit more complicated, with scientists discovering a whole new inner core within the center of the planet. Research released on February 21 in the journal Nature ...