29 August, 2010

Hoag's Object: A Strange Ring Galaxy

From Astronomy Picture of the Day 22/8/2010:

Hoag's Object - a ring galaxy: On the outside is a ring dominated by bright blue stars, while near the center lies a ball of much redder stars that are likely much older. Between the two is a gap that appears almost completely dark. Coincidentally, visible in the gap (at about one o'clock) is yet another ring galaxy that likely lies far in the distance.
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