About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 70. Chapters: 15 Orionis, 25 Orionis, 4U 0614+091, Alnilam, Alnitak, Ardra (nakshatra), Bellatrix, Betelgeuse, Chi1 Orionis, Chi2 Orionis, Chi Orionis, Collinder 69, Eta Orionis, Flame Nebula, FU Orionis, GJ 1087, GJ 3379, Gliese 179, Gliese 179 b, Gliese 204, Gliese 208, Gliese 223.2, HD 290327, HD 290327 b, HD 33636, HD 34445, HD 34445 b, HD 36960, HD 37605, HD 37605 b, HD 38529, HD 38529 b, HH 34, IC 2118, Iota Orionis, List of stars in Orion, Lynds 1616, Meissa, Messier 43, Messier 78, Mintaka, Mu Orionis, NGC 1788, NGC 1999, NGC 2023, NGC 2119, NGC 2169, NGC 2174, NGC 2175, Nu Orionis, Orion's Belt, Orion's Sword, Phi Orionis, Pi3 Orionis, Pi4 Orionis, Pi Orionis, Psi Orionis, Rigel, Saiph, Sigma Orionis, S Orionis, S Ori 70, Tau Orionis, Theta1 Orionis C, Theta Orionis, Trapezium Cluster, Upsilon Orionis, V1046 Orionis, V380 Orionis, WISEPA J051317.28+060814.7, WISEPA J053957.02-103436.5, WISE J061437.73+095135.0, Xi Orionis. Excerpt: Betelgeuse ( or ), also known by its Bayer designation Alpha Orionis (α Orionis, α Ori), is the eighth-brightest star in the night sky and second-brightest in the constellation of Orion. Distinctly reddish, it is a semiregular variable star whose apparent magnitude varies between 0.2 and 1.2, the widest range of any first-magnitude star. Betelgeuse is one of three stars that make up the Winter Triangle, and it marks the center of the Winter Hexagon. The star's name is derived from the Arabic, meaning "the Hand of al-Jauzā'," i.e. Orion, with mistransliteration into medieval Latin leading to the first character y being misread as a b. The star is classified as a red supergiant of spectral type M2Iab and is one of the largest and most luminous observable stars. If Betelgeuse were at the center of the Solar System, its surface would extend past the asteroid belt, possibly to the orbit of...
