Cross-section of the Earth (left) and the exoplanet Kepler-138 d (right). ... These water layers make up more than 50% of its volume, or a depth of about 2000 km. The Earth, ...

This is a cross-section of Earth's ozone layer as measured by the limb profiler, part of the Ozone Mapper Profiler Suite that's aboard the Suomi NPP satellite.

An artist's rendition of a cross-section of Earth. The innermost layer, the inner core, is a 1,500-mile-wide ball of iron. CHRISTOPH BURGSTEDT / SCIENCE PHOTO LIBRARY via Getty Images ...

A cross section of Earth. Our planet consists of several layers: a solid inner core, a liquid outer core, the mantle, and finally, the crust. forplayday/Getty ...

Below the mantle is the Earth's core, which has an inner and outer section. The outer core extends for around 1,400 miles and mostly consists of liquid iron and nickel.

The researchers used seismic waves to examine the types of rock beneath the seafloor and create a digital cross-section of Earth's crust and mantle. The team published its findings Sept. 27 in the ...