What did nicolaus copernicus invent?
In the 16th century, the astronomer Nicolaus Copernicus came up with the theory of a heliocentric (Sun was the center) view of our solar system. Up until this point, astronomers believed in a geocentric view (Earth- centered). Galileo was able to prove his theory later on in history.You can find more information here: http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level2/copernicus.
