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Orion Arm. The Orion Arm, also known as the Orion–Cygnus Arm, is a minor spiral arm within the Milky Way Galaxy spanning 3,500 light-years (1,100 parsecs) in width and extending roughly 20,000 light-years (6,100 parsecs) in length. [2] This galactic structure encompasses the Solar System, including Earth.
The University of Texas at Dallas' Varsity athletics program started when UTD provisionally joined the NCAA Division III and the American Southwest Conference (ASC) in 1998 and was granted full membership in the ASC in 2002. [184] [70] On July 20, 2023, the university announced it would move to NCAA Division II and join the Lone Star Conference ...
Orion's Belt or The Belt of Orion is an asterism within the constellation. It consists of the three bright stars Zeta (Alnitak), Epsilon (Alnilam), and Delta (Mintaka). Alnitak is around 800 light years away from earth and is 100,000 times more luminous than the Sun and shines with magnitude 1.8; much of its radiation is in the ultraviolet ...
Alnilam is the central star of Orion's Belt in the equatorial constellation of Orion. It has the Bayer designation ε Orionis, which is Latinised to Epsilon Orionis and abbreviated Epsilon Ori or ε Ori. This is a massive, blue supergiant star some 1,200 light-years distant. It is estimated to be 419,600 times as luminous as the Sun, and 40 ...
Messier 43 or M43, also known as De Mairan's Nebula and NGC 1982, is a star-forming nebula with a prominent H II region in the equatorial constellation of Orion. It was discovered by the French scientist Jean-Jacques d'Ortous de Mairan some time before 1731, [3] then catalogued by Charles Messier in 1769. [a] It is physically part of the Orion ...
The Horsehead Nebula (also known as Barnard 33 or B33) is a small dark nebula in the constellation Orion. [2] The nebula is located just to the south of Alnitak, the easternmost star of Orion's Belt, and is part of the much larger Orion molecular cloud complex. It appears within the southern region of the dense dust cloud known as Lynds 1630 ...
Bellatrix is the third-brightest star in the constellation of Orion, positioned 5° west of the red supergiant Betelgeuse (Alpha Orionis). It has the Bayer designation γ Orionis, which is Latinized to Gamma Orionis. With a slightly variable magnitude of around 1.6, it is typically the 25th-brightest star in the night sky.
Orion variable; well-studied protostar 2MASS J05352184-0546085: V2384: 05 h 35 m 21.84 s: −05° 46′ 08.6″ M7: eclipsing binary brown dwarf OMC-2 FIR 4: V2457: 05 h 35 m 26.97 s: −05° 09′ 54.5″ M7: has a circumstellar disk; Orion variable Orion Source I: 05 h 35 m 14.51 s: −05° 22′ 30.4″ protostellar binary Reipurth 50: 05 h ...