About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 29. Chapters: Barred irregular galaxies, Barred lenticular galaxies, Barred spiral galaxies, Milky Way, Messier 94, Barred spiral galaxy, NGC 3109, NGC 4631, Antennae Galaxies, NGC 7424, Messier 83, NGC 6822, Messier 109, NGC 55, NGC 1672, Messier 108, NGC 7331, NGC 4921, Messier 95, NGC 2207 and IC 2163, NGC 3384, NGC 1300, NGC 2608, NGC 1365, NGC 1533, Mice Galaxies, NGC 1097, NGC 7318, NGC 4027, NGC 3953, NGC 2787, NGC 4945, Dwingeloo 1, NGC 1532, Messier 91, NGC 3079, NGC 3314, NGC 4449, Tadpole Galaxy, Arp 299, NGC 2903, NGC 1427A, NGC 2500, NGC 7479, NGC 1512, NGC 4314, NGC 2536, ESO 137-001, ESO 269-57, NGC 47, NGC 2537, NGC 145, NGC 625, NGC 4319, NGC 88, NGC 1090, NGC 5068, NGC 2366, NGC 4214, NGC 1234, NGC 2859, NGC 925, Malin 1, NGC 6782, NGC 5398, IC 1296, NGC 5164, NGC 87, NGC 4448, PGC 36839, NGC 5921, NGC 89, NGC 3504, Barred irregular galaxy, Barred lenticular galaxy, IC 1515. Excerpt: The Milky Way Galaxy, commonly referred to as just the Milky Way, or sometimes simply as the Galaxy, is the home galaxy of the Solar System, and of Earth. The Solar System is located in the Milky Way galaxy around two thirds of the way out from the center, on the inner edge of the Orion-Cygnus Arm. The Sun orbits around the center of the galaxy in a galactic year-once every 225-250 million Earth years. The "Milky Way" is a translation of the Latin Via Lactea, in turn translated from the Greek (Galaxias), referring to the pale band of light formed by stars in the galactic plane as seen from Earth. It is agreed that the Milky Way is a barred spiral galaxy, with observations suggesting that it is a spiral galaxy. It contains 200-400 billion stars and is estimated to have at least 50 billion planets, 500 million of which could be located in the habitable zone of their parent star. New data suggests there may be up to twice as m...
