-
240 BCE
Eratosthenes
the earth was round
He invented a system of longitude and latitude and made a map of the known world. -
150 BCE
Claudius Ptolemy
geocentric theory
enabled astronomers to make accurate predictions of planetary positions and solar and lunar eclipses -
Period: 1510 to 1543
nicolaus copernicus
heliocentric theory
the first modern European scientist to propose that Earth and other planets revolve around the sun, or the Heliocentric Theory of the universe. -
Nov 11, 1572
tycho brahe
C/1590 E1
made accurate observations of the stars and planets -
Johannes Kepler
the Earth and planets travel about the sun in elliptical orbits.
celestial harmonies that reflected God's design for the universe. -
Sir Isaac Newton
the universal law of gravitation.
helped keep the planets rotating around the sun and creates the ebbs and flows of rivers and tides. -
Period: to
Albert Einstein
the theory of relativity
which revolutionized our understanding of space, time, gravity, and the universe.