Exosphere - Navo

• The Exosphere is a layer in the atmosphere and is the highest layer which is considered as outer space because there is no air there.
• The Exosphere is one of the five layers in the atmosphere. In the Exosphere you will find  satellites because there is less friction to irritate the satellites. Most of the molecules in the exosphere are pulled back into earth's lowest atmosphere by gravity. The pressure in the exosphere is created by solar wind storms that compress it.
• Although the exosphere is the most distance layer of earth's atmosphere it is the layer that is the planet's first line of defense against the sun's rays. It is also the first layer to come into contact and protect the earth from meteors, asteroids, and cosmic rays.
• If the boundary of the exosphere is considered to be where it is still affected by earth's gravity then the exosphere would be the largest part of earth's atmosphere.
•  If the boundary of the exosphere is considered to be approximately 6200 miles from the earth's surface, as many believe, then the thermosphere is the largest portion of the earth's atmosphere.