Astronomy glossary explains basic astronomical terms, L. LEAP YEAR Leap years are years with an extra day (February 29); this happens almost every four years.
Local Group: Local Group,, in astronomy, the group of more than 20 galaxies to which the Milky Way Galaxy belongs. About half are elliptical galaxies, with the remainder being of the spiral or irregular type.
Le Groupe local de galaxies [1] ou, plus simplement, le Groupe local [2] est le groupe de plus de 60 galaxies auquel appartient la Voie lactée [3], [4], [5].Son diamètre est d’environ 3 millions de parsecs (soit environ 10 millions d’années-lumière).
The Local Group galaxies and their kin are the building blocks of the most magnificent galaxies in the universe. Let them inspire your winter nights. Long before the “buy local” movement got underway we amateurs were galaxy shopping in the Local Group, a gravitationally-bound cluster of galaxies
The Nearest Groups of Galaxies. This is a map of galaxies that lie within 20 million light years plotted onto the supergalactic plane. Nearly all of the nearby galaxies lie near this plane (the supergalactic coordinate system was originally invented because many nearby galaxy groups lie close to this plane.)
Hello, is there anyone out there? With all of the galaxies in the Universe, is it possible that there is cognizant life somewhere else? Well, I can not answer that question for you, but I can offer you a great deal of information about galaxies so that you can make your own informed decision on the matter.
Picture Galaxy Type Distance from Earth Magnitude Group Membership Notes Diameter (ly) Millions of light-years Mpc M m 1: Milky Way: SBbc: 0.027: 0.008 −20.8: n/a: Local Group
Sculptor Group; The Sculptor group is the nearest group of galaxies to the Local Group and is dominated by five galaxies, four spiral – NGC 247, 253, 300 and 7793 and one irregular – NGC 55.
Types of Galaxies Chapter index in this window — — Chapter index in separate window This material (including images) is copyrighted!.See my …
