The Synthesis of "ancient astronomy"

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

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

Discover astronomy, the science of stars, planets, and galaxies. Learn why this ancient field is trending today and how it shapes our modern world.

Discover the celestial sphere, an imaginary globe used by astronomers to map stars, planets, and constellations in the night sky. Your guide is here.

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

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

Discover astrometry, the science of precisely mapping stars and celestial bodies, and how it's revolutionizing our understanding of the galaxy.

Discover constellations, the star patterns that have guided and inspired humanity for millennia. Learn what they are and why we still look to the stars.

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

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