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Ejnar Hertzsprung (; 8 October 1873 - 21 October 1967) was a Danish chemist and astronomer. He is best remembered for his role in developing the Hertzsprung-Russell diagram of stars.

Career

Hertzsprung was born in Frederiksberg, Denmark, the son of Severin and Henriette. He studied chemical engineering at Copenhagen Polytechnic Institute, graduating

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