His model had all the planets (except Earth) orbiting around the Sun, but then the Sun orbited around the Earth. However, the moon, the sun and the stars orbit the earth, as Ptolemy had said. Tycho Brahe’s model A Danish astronomer Tycho Brahe (1546-1601) admired Copernicus’ work especially for his mathematical solutions. Brahe proposed a model of the Solar System that was intermediate between the Ptolemaic and Copernican models (it had the Earth at the center). It proved to be incorrect, but was the most widely accepted model of the Solar System for a time. Brahe proposed a model of the solar system to explain Galileo's observation that Venus has phases without making it necessary for Earth to be moving. Tychonic system, scheme for the structure of the solar system put forward in 1583 by the Danish astronomer Tycho Brahe. Tycho Brahe proposed a theory of the solar system, which contained elements of both the Earth-centred Ptolemaic system and the Sun-centred Copernican system. Tycho tried to produce a model consistent with the best of both Ptolemy and Copernicus. In his theory, the other planets revolved around the Sun, which itself revolved around Earth. He said that Copernicus was right – the five planets Mercury, Venus, Mars, Jupiter and Saturn – do orbit the sun. He believed, however, that the elegance of the heliocentric model was too high a price for abandoning the idea of an immovable Earth.