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1900 BCE
Eratosthenes
He invented a system of longitude and latitude and made a map of the known world in BCE -
1500
Claudius Ptolemy
geocentric system in 150 CE, mathematical model of the universe -
1543
Nicolaus Copernicus
heliocentric system in 1543, “it changed the way people used physics and astronomy to understand the universe” -
1572
Tycho Brahe
He had a discovery of the new star in Cassiopeia. It was a massive star in our galaxy, which gave us a new and fascinating opportunity to learn more about how such supernovae occur -
Johannes Kepler
Kepler's First Law stated that planets move in elliptical paths around the Sun which is important because it helped show a heliocentric view of the solar system -
Sir Isaac Newton
He discovered the theory of universal gravitation, it’s important because he helped to shape our rational world view. -
Albert Einstein
He discovered theory of relativity. It’s important because his theory made many new technologies possible.