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240 BCE
Eratosthenes
Eratosthenes created the Sieve of Eratosthenes which helps of finds prime numbers to this day. -
127
Claudius Ptolemy
Ptolemy realized the "stellar" universe was situated on a crystal sphere by the geocentric solar system. Our day and night cycles were created by the Sun orbiting Earth while Earth didn't rotate. -
1515
Nicolaus Copernicus
Nicolaus Copernicus came to the conclusion that every planet revolves around the Sun -
Tycho Brahe
He created the Tychonic System which helped format the Solar System -
Johannes Kepler
Planets orbit the Sun on elliptical orbits, according to Kepler's First Law. Additionally, he found what is now known as Kepler's Second Law, which states that planets move proportionately faster in their orbits the closer they are to the Sun. -
Sir Isaac Newton
Sir Isaac Newton created the Newton laws; According to the first law, until a force acts on an item, it will not alter its motion. According to the second law, an object's force is determined by multiplying its mass by its acceleration. According to the third law, when two objects interact, they exert equal-sized and opposite-direction pressures upon one another. -
Albert Einstein
Albert Einstein proved that gravity is curving field that is produced by mass in the space-time continuum.