Death anniversary
Henry Norris Russell
Died on February 18, 1957
69
Years ago
70th anniversary next
The 70th anniversary falls on February 18, 2027, in 117 days.
Henry Norris Russell ForMemRS HFRSE FRAS (October 25, 1877 – February 18, 1957) was an American astronomer who, along with Ejnar Hertzsprung, developed the Hertzsprung–Russell diagram (1910). In 1923, working with Frederick Saunders, he developed Russell–Saunders coupling, which is also known as LS coupling.
Text from Wikipedia, licensed under CC BY-SA 4.0
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