11. Why do we have an ozone layer outside of our Earth? (A K2S Question)

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The ozone layer extends from about 6 miles to 60 miles above the Earth's surface. Ozone molecules contain three oxygen atoms. Ultraviolet light from the Sun breaks one oxygen molecule into two separate oxygen atoms. One of these atoms combines with another oxygen molecule to form ozone.

Answer provided by Robert P. McCoy, Ph.D.


Image:K2S logosmall.jpg Question and Answer extracted from the book Kids to Space - by Lonnie Schorer


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