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225 BCE
Eratosthenes
Discovered the Armillary Sphere. The importance of this discovery is that it was a mechanical device that astronomers used for many years to figure out where the stars were in the sky and how they appeared to move. -
150 BCE
Claudius Ptolemy
Discovered the Controversial Geocentric Theory of the Universe. The importance of this discovery is that it is the form of basis of our understanding of the motions of stars and planets for a thousand years. -
1543
Nicolaus Copernicus
Discovered the Heliocentric Solar System. The importance of this discovery is he was the first modern European scientist to propose the Earth and other planets revolve around the Sun. -
Tycho Brahe
Discovered the Tychonian Model of the Universe. The importance of this discovery is the reinforced commonsense notions of how the sun and the planets are mobile while the Earth is not. -
Johannes Kepler
Discovered the Keplerian Telescope. The importance of this was the fact that it was an improvement on the Galileo's design. -
Sir Isaac Newton
Discovered the Basic Principles of Modern Physics. The importance of this discovery is it being the formulation of the three laws of motion. -
Albert Einstein
Discovered the Theory of Special Relativity. The importance of this discovery is this determined that the laws of physics are the same for all non-accelerating observers.