Google celebrates Nicolaus Copernicus 540th birthday with a doodle with a modeled heliocentric. Born in February 19 1473 died on 24 May 1543
Who was Nikolaus Kopernikus: he was an astronomer mathmatician who made the formula which created the heliocentric.
The purpose of this was to place the Sun in the center of the universe, and not the the Earth as we know it now,
Copernicus’ was a great mathemeatision which his heliocentric theory revolutionised the way he understood how our solar system works.
If you want to know more about nicolaus copernicus biography visit this wikipedia page : wikipedia