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ring galaxy




ring galaxy
The ring galaxy AM 0644-741. Hubble image
A galaxy with a ring-like appearance. The ring contains luminous blue stars; relatively little luminous matter is present in the central regions. It's believed that such a system was an ordinary galaxy that recently suffered a head-on collision with another galaxy. A spectacular example is Hoag's Object.


Related entry

   • polar ring galaxy


Related category

   • GALAXIES