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175 BCE
Eratosthenes
Used the sun to measure the sun as a round planet not flat, it is considered important because so many other discoveries would not add up if the earth was flat and it allowed for more open minded discoveries -
120
Claudius Ptolemy (120 A.D)
He created a model showing the solar system actually revolves around the earth . This is an important discovery because it showed the planets do orbit around one thing and that the planets weren’t fixed in one place even though he got the center wrong. -
1473
Nicolaus Copernicus (1473-1543)
He had the theory earth spins on an axis. This was a huge discovery it shows earth makes a rotation around the sun but also spins at the same time. -
1571
Johannes Kepler 1571 -1630
He discovered planets or its were ellipses not circles this is important because slight things like this make a huge difference when figuring out timings and distances in space -
Typhoon brache 1601
He decided to keep measurements of the planets paths, this was important because it led to Keller’s discovery of ellipses -
Sir issac Newton (1643-1727)
He is the man who discovered the laws of gravity this is huge because it is the basis of of solar system -
Albert Einstein (1879-1955)
He had many discoveries including that space and time are like an entity this is a huge deal because it’s how we discovered space time