The upper mantle is hard but below that is semi-molten rock called magma. Crust The crust is the outer layer of the Earth on which we live. It is the thinnest layer and is between 5 and 90 km thick.

Continental and oceanic plates all fit together to form the outer crust of the planet. Eight major plates are named on the diagram below. Heat from the core makes magma in the mantle rise towards ...

So, trying to land on it would be like trying to land on a cloud here on Earth. There's no outer crust to break your fall on Jupiter. Just an endless stretch of atmosphere. The big question ...

The new layer is located around 100 miles beneath the surface and appears to extend below much of the Earth’s outer crust. Learning more about it could help decipher the mysteries of plate ...