Regions of the atmosphere

(under construction)

by Wm. Robert Johnston
last updated 25 March 2005

The atmosphere of the Earth is those gases surrounding the Earth, bound to the Earth by the Earth's gravity.

Regions of the atmosphere

Where does the atmosphere end and space begin?

It depends on what you mean by atmosphere! Since the atmosphere becomes thinner and thinner as you go to greater and greater heights above the Earth's surface, the transition is gradual. Depending on what physical aspect of the atmosphere is of interest, you can define various transition heights. To illustrate, here are different answers:

See this page by John F. Graham for more on this.

© 2005 by Wm. Robert Johnston.
Last modified 25 March 2005.
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