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400 BCE
Claudius Ptolemy
He believed that the Earth was in the center of our solar system. This is important because it gave fuel to the exploration on what was actually true -
240 BCE
Eratosthenes
He calculated the Earth's circumference while everyone else believed the Earth was flat. This is important to out history because we would not be this advanced in technology without his discovery. -
1543
Nicolaus Copernicus
He created our heliocentric model of the solar system. This is important because we now know how our solar system works -
Tycho Brahe
He created the geocentric model of our solar system, this is important because it inspired scientists to check his work and discover our actual layout of our solar system. -
Kepler
He created a book that went into more detail about Copernicus's heliocentric theory, with more detail on orbits, and what else may lie there. This is important because it gives us a better understanding of our solar system. -
Newton
Isaac created the law of gravity. This is important because it helps explain the orbits in our solar system. -
Albert Einstein
Albert Einstein created special theory of relativity. Albert's discovery now is the reason for the studies in cosmology to expand