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255 BCE
Eratosthenes
He calculated the tilt of Earth's axis, determining that led to the development of longitude and latitude -
150
Claudius Ptolemy
Created the first planetary model that was geocentric and helped to launch the study of outer space -
1543
Nicolaus Copernicus
Copernicus improved the heliocentric model, he was not the original theorizer of the model, but he made the planetary orbits circular -
1577
Tycho Brache
1577: he reconstructed the orbits of the planets making them not solid like was thought by Aristole -
Johannes Kepler
He developed the three laws of Planetary motion and this is important because they say that the planets move in ellipses instead of circles -
Sir Isaac Newton
Created the Law of gravity and it determined that all things are attracted to each other by gravity but some things more than others, that helped us understand how planets stay in orbit -
Albert Einstein
He published some papers and they included the theory of relativity that explains how light bends and moves