The three layers of Earth are core, mantle and crust. Each of these layers has distinct characteristics. Understand their properties, composition and more.
A simplified look into the structure of an atomExplore an atom's interior to discover the layout of its nucleus, protons, and electrons. See all videos for this article Most of the atom is empty space. The rest consists of three basic types ofsubatomic particles:protons,neutrons, andelectrons...