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Although he is less well-known than Galileo, Copernicus was one of the first great ,begin underline,iconoclasts,end underline, of the Renaissance. Copernicus challenged the Earth-centered view of the universe that had been popular in Europe for nearly two thousand years. He theorized that the Sun, rather than the Earth, was the center of the known universe. Not only did this theory form the basis of modern astronomy, but it became one of the foundations of the Scientific Revolution. Galileo promoted Copernicus's beliefs in a heliocentric universe and was sent to prison for his support of this radical new belief.
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