by Nicholas Ormond
What did he discover?
As a young man Nicholas Copernicus studied our heavans and discovered that the Greek's Earth centered solar system failed when it came to predicting planetary motion. He wondered about the Earth being a planet and having a Sun centered solar system so then all the planets went around the Sun non stop.
When did he make his discovery?
Nicholas made his discovery 1543 and he made a book about his discovory and the last pages were made the day he died. Nicholas Copernicus was an astronomer for 40 years and known as an amatur astronomer.
Nicholas Copernicus didn't have tecnology to use so he used thoughts,theories and ideas. Thats how we got his idea of a sun centered solar system and Galileo's theory of a earth centered solar system.
How did he help our understanding of the solar system?
He helped our understanding of the solar by giving us the theory of a sun centered solar system. He also helped us so we knew that Galileo's theory was wrong.