Tycho Brahe was a Danish astronomer in the 1500-1600s. He built Europe's most modern astronomical lab and collected data about stars and planets. He undermined Ptolemaic view and did not fully accept Copernicus' theory. He stated that planets revolved around the sun, but the Earth was stationary.

Tycho Brahe was a Danish astronomer in the 1500-1600s. He built Europe's most modern astronomical lab and collected data about stars and planets. He undermined Ptolemaic view and did not fully accept Copernicus' theory. He stated that planets revolved around the sun, but the Earth was stationary.