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
Ara (constellation) Westerlund 1-26, which is possibly the largest star known with an estimate varying between and . Although Ara lies close to the heart of the Milky Way, two spiral galaxies (NGC 6215 and NGC 6221) are visible near star Eta Arae. USS Ara (AK-136) was a United States Navy Crater class cargo ship named after the constellation. Online sources Ara (constellation) Ara (Latin: "The Altar") is a southern constellation situated between Scorpius and Triangulum Australe. Ara (Greek: Βωμός) was one of the 48 Greek constellations described by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern