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How Many Stars?

Science and Astronomy Clubs

An experiment to determine the quality of the nighttime sky


To nature lovers, navigators, and astronomers, dark skies are essential.

A simple, and very easy way to assess the "observing-quality" of the nighttime sky in your neighbourhood is to simply estimate the number of stars that can be seen in the nighttime sky on a clear (cloudless) moonless night.

Of course a good estimate cannot be just a wild guess ... a good estimate must be determined scientifically and methodically ... here's how....

Counting Stars


Préparé par l’équipe scientifique YES I Can! à l'Université McMaster,
pour l'Agence spatiale canadienne