What profession did both John Reynolds and Edwin Hubble belong to? 
John Reynolds (astronomer): John Henry Reynolds (1874–1949) was a British astronomer who served as the president of the Royal Astronomical Society between 1935 and 1937 and is known for his work on the classification of stellar bodies. Edwin Hubble: Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was an American astronomer. Edwin Hubble:  He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology and is regarded as one of the most important astronomers of all time.
astronomers