The astronomer best known for saying that the Sun is at the center of the solar system is Nicolaus Copernicus.

Quick Scoop

  • Nicolaus Copernicus (1473–1543) was a Polish astronomer who proposed a heliocentric model, in which Earth and the other planets orbit the Sun.
  • He published this idea in his famous book De revolutionibus orbium coelestium in 1543, which helped launch what is now called the Copernican Revolution.
  • Although some earlier thinkers had suggested Sun-centered ideas, Copernicus created the first full mathematical model placing the Sun near the center and Earth in motion around it.

For school-style questions like “Who said the Sun is the center of the solar system?”, the expected one-word answer is: Copernicus.

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