Greek scientist who created a model of the universe that became the conventional wisdom of the scientific world for 1300 years.

The correct answer is Ptolemy.
Although his model was used for thousands of years and considered a 'work-of-art,' it was actually incorrect. He thought that everything in the universe revolves around the Earth, and that the Earth is in the center of our galaxy. This is obviously wrong, which was proven by Copernicus centuries later.