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194 BCE
Eratosthenes
Eratosthenes measured Earth's circumference mathematically using two surface points to make the calculation, this happened in 240 B.C.. He was born 276 bce and passed away 194 bce -
170 BCE
Claudius Ptolemy
Ptolemy saw the Universe as a set of nested, transparent spheres, with Earth in the center, this discovery was made on 3-26-127 and he was born on 100ce and passed away at 170 ce -
May 24, 1543
Nicolaus Copernicus
Nicolaus came up with the theory that the Sun is at rest near the center of the Universe and that the Earth spinning on its axis once daily, revolves annually around the Sun once a year this was discovered in 1504. He was born 2-19-1472 and passed in 5-24-1543 -
Tycho Brahe
Tycho Brahe proposed a theory of the solar system, which contained elements of both the Earth's system and the Sun's system and this happened in 1572, he was born 12-14-1546 and passed at 10-24-1601 -
Johannes Kepler
stated that planets move in elliptical paths around the Sun. He also discovered that planets move proportionally faster in their orbits when they are closer to the Sun this happened in 1609. Johannes was born on 12-27-1571 and passed away 11-15-1630 -
Sir Isaac Newton
Sir Isaac Newton made a theory that all objects in the Universe pulled on each other through gravity this occurred in 1706 and he was born on 12-15-1642 and passed away on 3-20-1727 -
Albert Einstein
Einstein thought space and time were intertwined in an infinite “fabric,” like an outstretched blanket. this was discover 5-29-1919. He was born 3-14-1879 and passed away on 4-18-1955