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
Aquila (constellation) and the people of Pukapuka called Altair "Turu" and used it as a navigational star. The Māori people named Altair "Poutu-te-rangi", "Pillar of the Sky", because of its important position in their cosmology. It was used differently in different Māori calendars, being the star of February and March in one version and March and April in the other. Altair was also the star that ruled the annual sweet potato harvest. Two United States Navy ships, USS" Aquila" (AK-47) and USS "Aquila" (PHM-4), are named after the constellation. Aquila (constellation) Aquila is a constellation on the celestial equator. Its name is