Nicolaus was born in Feburary 19th,1473 in Toran,Poland.
He died in Frauenburg,Poland on the 24th of May 1543.
His occupation was being a mathematician, astronomer and a scientist.
Nicolaus made a very important discovery.He discovered that the Earth and all the other planets revolve around the sun. Then it made it easier to estimate the distance from the sun. He discovered this in the early 1500's.
Nicolaus used a compass to make this discovery.
If Nicolaus did not discover this discovery, we wouldn't know that the Earth rotates around the Sun and the Moon rotates around the Earth, also we wouldn't know that there are 24 hours in a day and 60 minutes in an hour.