Alfred Fowler (March 22, 1868 - June 24, 1940) was an English astronomer. He was appointed Instructor (later Assistant Professor) of Astrophysics at Imperial College and worked there until his death. He was an expert in spectroscopy, being one of the first to determine that the temperature of sunspots was cooler than that of surrounding regions. He died in 1940 at the age of 72.

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