Earth is made up of several layers: the lithosphere, asthenosphere, lower mantle (also known as mesospheric mantle), outer core and inner core. Skip to main content. Open menu Close menu ...

Earth’s innermost layer is a 400-mile-wide ball of iron, new study suggests By Jackie Wattles, CNN 3 min read Updated 10:35 PM EST, Tue February 21, 2023 Link Copied! This Blue ...

Young Earth’s molten lava ocean was layered like a pudding cake, according to a study published today (Nov. 6) in the journal Nature.

Young Earth’s molten lava ocean was layered like a pudding cake, according to a study published today (Nov. 6) in the journal Nature.

The fourth layer of Earth's atmosphere is the thermosphere. It begins just above the mesosphere and extends to approximately 372 miles (600 km) high, according to NASA.