04. How much moisture is there? (A K2S Question)

From The Space Library

There is no moisture in space. Most of the water in the atmosphere freezes and falls in clouds at about six miles up. Chemistry forms more water at higher altitudes but a second cold trap at about 55 miles keeps water from getting above that altitude.

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

Question and Answer extracted from the book Kids to Space - by Lonnie Schorer

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