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Title: Edwin Hubble, American Astronomer
Caption: Edwin Powell Hubble (1889-1953) was an American astronomer who profoundly changed the understanding of the universe by confirming the existence of galaxies other than our own, the Milky Way. He also discovered that the degree of "Doppler shift" (specifically "redshift") observed in the light spectra from other galaxies increased in proportion to a particular galaxy's distance from Earth. This relationship became known as Hubble's law, and helped establish that the universe is expanding.
Category: Science: Personalities
Credit: Album / Science Source
Image size: 2610 × 3555 px | 26.5 MB
Print size: 22.1 × 30.1 cm | 1027.6 × 1399.6 in (300 dpi)