The atmosphere is divided into four main parts. They are the Troposphere, Stratosphere, Mesosphere, and Thermosphere.    On the sidebar to the left, you can navigate through this website to find more information on the specific parts of the atmosphere, the formation of the atmosphere, and the credits to this site.                                                                          

            The atmosphere surrounds and protects the Earth.  It also provides materials that allow the Earth to support and sustain life.  The atmosphere is also one of the three spheres of the Earth.   The other two are the Lithosphere and Hydrosphere.