Edwin Hubble

✶November 20, 1889

†September 28, 1953

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About their life

Edwin Powell Hubble was an American astronomer. He played a crucial role in establishing the fields of extragalactic astronomy and observational cosmology. Hubble proved that many objects previously thought to be clouds of dust and gas and classified as "nebulae" were actually galaxies beyond the Milky Way. He used the strong direct relationship between a classical Cepheid variable's luminosity and pulsation period for scaling galactic and extragalactic distances.

American astronomer (1889–1953)

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Biography from the article Edwin Hubble on the English Wikipedia, available under CC BY-SA 4.0.