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Astronomy Picture of the Day
The Coma Cluster of Galaxies
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#85367
by
[z]Barbara Harris
@
22.03.2006 00:00
- nach oben -
The Coma Cluster of Galaxies
Explanation: Almost every object in the above photograph is a galaxy. The
Coma Cluster of Galaxies
pictured above
is one of the densest
clusters
known - it contains thousands of
galaxies
. Each of these galaxies houses billions of stars - just as our own
Milky Way Galaxy
does. Although nearby when compared to most other
clusters
, light from the
Coma Cluster
still takes hundreds of millions of years to reach us. In fact, the
Coma Cluster
is so big it takes light millions of years just to go from one side to the other! Most galaxies in
Coma
and other clusters are
ellipticals
, while most
galaxies
outside of clusters are
spirals
. The nature of
Coma's X-ray emission
is
still being investigated
.
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