Birth anniversary

Henry Norris Russell

Born on October 25, 1877

148

Years ago

149th anniversary next

The 149th anniversary falls on October 25, 2026, in 1 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.

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