On 15 Jan, 2012 By garyboyle@xplor...
A Cosmic Ocean of Islands
Our Universe is made up of a staggering amount of starry islands, we call galaxies. With the average galactic population of about 200 billion stars, astronomers believe there are more than 100 billion galaxies residing in the known Universe. These tiny patches of grey can only be glimpsed with a telescope or very large binoculars steadily mounted on a tripod. Like fish in the ocean swimming alone or in schools, galaxies are found by themselves or in small groups and clusters.
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