The rise of heliocentrism is well studied, and the "center of the universe" shifted from Earth to the sun once the dust settled on the Galileo affair. But when did we realize that the sun is not the center, but merely one of billions of stars in a large galaxy?
closed as off-topic by Denis de Bernardy, justCal, Steven Burnap, Lars Bosteen, sempaiscuba♦ May 8 at 2:07
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