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) from Earth. Columba is the constellation at the solar antapex - the Earth (and Sun) is moving away from its direction as the solar system moves through space. The constellation contains the runaway star μ Columbae, which was probably expelled from the ι Orionis system. Exoplanet NGTS-1b and its star NGTS-1 are in Columba. There is one globular cluster in Columba, 7th-magnitude NGC 1851. It is 39,000 light-years from Earth and is resolvable in medium-sized amateur telescopes.<br> NGC 1792 is a spiral galaxy of magnitude 10.2. NGC 1808 is a Seyfert galaxy of magnitude 10.8. Columba (Chinese astronomy) Columba (constellation)