Shown above is the double cluster within the constellation Perseus, the Hero. Spotted just to the right of the center of the photo, the clusters can be identified as NGC 869 and NGC 884 and contain stars that are much younger than the sun. These clusters are most likely the result of the same star formation. The deep red colors are due to the Hydrogen emissions and are enhanced for viewing preferences. The other cluster seen just to the left of the main double cluster is thought to be related to it and is known as NGC 957.
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