Noun
United States astronomer who developed a theory of stellar evolution (1877-1957)
Source: WordNetIn the early 20th century, Henry Norris Russell proposed that, rather than being a new element, the line at 500.7 nm was due to a familiar element in unfamiliar conditions. Source: Internet
This became known as the Vogt-Russell theorem ; named after Heinrich Vogt and Henry Norris Russell. Source: Internet