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
Columba (constellation) Columba (constellation) Columba is a small, faint constellation created in the late sixteenth century. Its name is Latin for dove. It is located just south of Canis Major and Lepus. In the Society Islands, Alpha Columbae (Phact) was called "Ana-iva". Columba is rather inconspicuous, the brightest star, Alpha Columbae, being only of magnitude 2.7. Alpha Columbae, a blue-white star, is traditionally called Phact, which means "ring dove". Alpha Columbae is 268 light-years from Earth. The only other named star in Columba is Beta Columbae, which has the name Wazn. It is an orange-hued giant star of magnitude 3.1, 87 light-years