The Synthesis of "geocentrism"

Explore the geocentric model, the ancient astronomical theory that placed a stationary Earth at the very center of the entire universe.

Discover the heliocentric model, the revolutionary concept that places the Sun, not Earth, at the center of the solar system. Learn its history.

Discover Nicolaus Copernicus, the astronomer who revolutionized our understanding of the universe by placing the Sun, not the Earth, at its center.

Discover the Copernican Revolution, the paradigm shift from an Earth-centered to a Sun-centered universe, initiated by Nicolaus Copernicus.

Discover Aristarchus, the Greek astronomer who first proposed a Sun-centered model of the universe, nearly 1,800 years before Copernicus.

Discover Claudius Ptolemy, the ancient astronomer and geographer whose geocentric model of the universe shaped science for over 1,400 years.

A look at Nicolaus Copernicus, the astronomer whose heliocentric model placed the Sun at the center of the universe, transforming science and our place in it.

Discover Johannes Kepler, the 17th-century astronomer whose laws of planetary motion revolutionized our understanding of the solar system.

Discover Johannes Kepler, the 17th-century astronomer who revolutionized our understanding of the cosmos with his laws of planetary motion.

Discover Kepler's three laws of planetary motion, which describe how planets orbit the Sun. Learn why these fundamental principles of astronomy matter.