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Helps design the Hale Telescope on Mount Palomar in California (jan 22, 1941 – apr 30, 1948)
Added to timeline:
Henrietta Leavitt
By
Shawn Cunning
2 Oct 2018
0
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498
Date:
jan 22, 1941
apr 30, 1948
~ 7 years and 3 months
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