Galaxie is a Canadian digital broadcasting service, which offers 45 commercial-free music channels, each devoted to a particular genre of music, for distribution with digital cable or direct broadcast satellite services.
Most galaxies are several thousand to several hundred thousand light years in diameter and are usually separated from one another by distances on the order of millions of light years.
Clusters of galaxies are often dominated by a single giant ellipticalgalaxy, which over time tidally destroys its satellite galaxies and adds their mass to its own.
This galaxyrotation problem is thought to be explained by the presence of large quantities of unseen dark matter.
Thousands of galaxies were identified and cataloged by the British astronomers Sir William Herschel, Caroline Herschel, and Sir John Herschel, during the early part of the 19th century.
This was interpreted by the American astronomerEdwin Hubble as evidence that all galaxies are moving away from one another and led to the conclusion that the universe is expanding.
In viewing a galaxy with a telescope, inferring its distance is impossible, for it may be a gigantic galaxy at a large distance or a smaller one closer to Earth.
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