Taurus (constellation) is a white, spectral class B7 III giant star known as "El Nath", which comes from the Arabic phrase "the butting", as in butting by the horns of the bull. At magnitude 1.65, it is the second brightest star in the constellation, and shares the border with the neighboring constellation of Auriga. As a result, it also bears the designation Gamma Aurigae. Zeta Tauri (the proper name is "Tianguan") is an eclipsing binary star that completes an orbit every 133 days. A degree to the northwest of ζ Tauri is the Crab Nebula (M1), a supernova remnant. This expanding nebula
Porphyrius the Charioteer in one's mid-40s-50s); Porphyrius was an exception. Porphyrius was the best charioteer of his time. He was the only charioteer to win the diversium twice in one day. The diversium was an honor given to one who would win the chariot race as a member of one team (Blues), and would then win again except that he would be racing as a member of the losing team (the Greens). To win the diversium, one would have to win as a member of the Blues, and then win against the Blues as a member of the Greens. Porphyrius did this twice