LAYERS OF THE ATMOSPHERE

• Exosphere


  Outermost layer of the Earth's atmosphere; where artificial satellites orbit
• Thermosphere


  High temperature; where aurora mainly occurs
• Mesosphere 


  Coldest part of the atmosphere; where meteors start to be visible
• Stratosphere


  Contains the ozone layer; where most commercial aircraft fly
• Troposphere


  Layer that coincides with the surface of the Earth; contains most of the air and water vapor in the atmosphere.