Henry Norris Russell
Born: October 25, 1877
Died: February 18, 1957 (aged 79)
Bio: Henry Norris Russell was an American astronomer who, along with Ejnar Hertzsprung, developed the Hertzsprung Russell diagram. In 1923, working with Frederick Saunders, he developed Russell Saunders coupling which is also known as LS coupling.
Known for:
- Determination of Stellar Parallax (1911)
- Fate and Freedom (1927)
- The Solar System and Its Origin (1935)
- Determinations of Stellar Parallax (1911)