ASTRONOMERS

Astronomers have contributed greatly to our understanding of physics and motion. In this section you can learn all about famous astronomers and what each of them has contributed to our understanding of space.

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Russell, Henry Norris

Russell, Henry Norris (1877-1957), a United States astronomer. About 1913 he and Ejnar Hertzsprung independently noted certain relationships between stars that resulted in the Hertzsprung-Russell Diagram, a method of classifying stars.

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