Ring GalaxiesPosted on the 03 May 2011 by Gabe12logan
Ring galaxies form when small galaxies collide with a core of spiral galaxies. On the outer edges of the new, combined galaxy formed a powerful ring made up of many stars. Hubble Space Telescope revealed more ring galaxies than scientists expected, indicating the possibility of galactic collisions.
Almost all galaxies have the tendency of gathering in clusters of galaxies. So far there are over 3,000 such clusters. Our galaxy is located in relatively small galactic flock with another 33 galaxies called the Local Group. There are far larger galactic clusters. One of the largest clusters for which we know, lies in the constellation Coma Berenices. It has a flock of over 30,000 galaxies. All of these clusters of galaxies together with all matter and energy makes the galactic group called Metagalaxy. It is assumed that it has about 10 billion galaxies, whose mass is about 10 to 15 solar masses.
Stars and gas clouds orbit the center of the galaxy. Astronomers believe that most galaxies rotate around the black hole, the object which with a large gravitational force attracts everything, even light. Rotation period lasts for more than 100 million years. Space exploration is based on optical surveys. Most of discoveries about the universe came to existence due to hydrogen clouds, which radiate electromagnetic radiation.
These articles might interest you :
The local group is relatively small cluster of galaxies and our galaxy is a part of local group. It consists of two dozen galaxies, but most are "dwarf"... Read moreBy Gabe12logan
are galaxies that are extremely bright in the radio part of the spectrum. In the majority of detected radio galaxies a strong emission of radio waves was found... Read moreBy Gabe12logan
My taking the day off wasn't so much so that I could relax and take some time for myself. I had other things to do...Unlike in the US where you have your party... Read moreBy Clogsandtulips
I found this amazing, HUGE, gothic, gargoyle ring last week in a little Boutique just near Notre Dame in Paris. Notre Dame Cathedral in the heart of the city... Read moreBy Lauramoodley
The Republican Party doesn’t have today a single serious contender to face President Obama in 2012, in contrast with the Democrats who in February, two years... Read moreBy Igoudiaby
CURRENT, DEBATE, POLITICS, SOCIETY
Photo of Matsushima, Japan, 1902 The whole world mourns with Japan for losses unspeakable. Terror ongoing. Tragedy immeasurable. Life is perilous, even in... Read moreBy Cathyberry
DESTINATIONS, HISTORY, TRAVEL
BUY IT NOW - ARTFIRE LINKThis beautiful one of a kind ring is made from fabric and buttons. The ring base is made from light green elastic fabric sewed... Read moreBy Litoshandmadecreations
ARTS & CRAFTS, HOME