Nicholaus Copernicus (pre)
Nicholaus copernicus discovered that the earth isn't in the middle of the universe and that the sun was in the middle of the universe, all the planets orbited around the sun, that the earth has more than one motion, the earth goes around the sun in a circle and that the further way from the sun the longer it takes to orbit around the sun.
Date and technology
He discovered his discovery in 1514 and wrote it in a hand book.
He used a telescope and diagrams.
Nicholaus Copernicus discovery taught us that the sun is in the middle of the univers and that all the planets orbited around the sun not the earth and he also taught us that the further the away from the sun the longer it takes to orbit around the sun.