The composition of the earth's atmosphere is :
Here is a nice link to a NASA discussion of the atmosphere:
go
to NASA Ozone link.
Here's another profile :
The Ozone layer heats the mid-upper stratosphere. Chemicals (chloro-fluro-carbons) destroy ozone. A recent image of the ozone layer from spacecraft:
The most recent images of the ozone hole are posted daily
at the
Total Ozone Mapping Spectrometer page .
Here is a link to a nice web site which explains the Greenhouse Effect: go to Australia site explaining the Greenhouse Effect.
Above the atmosphere is the Ionosphere and then the Magnetosphere.
The ionosphere includes the Aurora. Here is the
"auroral oval":
The magnetosphere is bound to the earth by the earth's
magnetic field :
Here is an image taken in the ultraviolet by astronauts
on Apollo 16 :
