The TYCHOS is a revised model of our solar system. Its basic configuration is based on the semi-Tychonic model as defined by Longomontanus in his Astronomia Danica, a monumental work regarded as Tycho BraheÕs ÒtestamentÓ. The TYCHOS submits that the Sun and Mars are a binary system, much like the vast majority of our surrounding star systems (as discovered only in later decades). A series of longstanding riddles of astronomy are shown to be effectively resolved by the core principles of the TYCHOS model. Conversely, it is demonstrated that the geometry of the Copernican model cannot represent the physical reality of our cosmos Ð as it violates some of the most elementary laws of perspective in Nature. In light of this, the TYCHOS emerges as more than just another alternative interpretation of our vast body of documented astronomical observations; it is today the only existing model of our solar system consistent with empirical experience and the most consolidated realities of our physical world.