Earth’s atmosphere has five major and several secondary layers. From lowest to highest, the major layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere. "The Snow ...

Below the crust lies the mantle and many other layers separating the surface from the Earth’s center 4,000 miles down. Whether our planet also includes water in those layers has long been debated.

Chinese scientists believe Earth's core has reversed rotation Scientists have long wondered what lies at the very center of the Earth, and the latest research is putting weight behind a theory ...