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	<updated>2026-09-29T23:06:19Z</updated>
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	<entry>
		<id>https://ideawaza.com/index.php?title=Ring_galaxy&amp;diff=23275</id>
		<title>Ring galaxy</title>
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		<updated>2007-10-12T21:16:28Z</updated>

		<summary type="html">&lt;p&gt;84.22.3.111: bg:Пръстеновидна галактика&lt;/p&gt;
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&lt;div&gt;[[Image:Hoag&#039;s object.jpg|right|thumb|Hoag&#039;s Object, a ring galaxy.]]&lt;br /&gt;
A &#039;&#039;&#039;ring galaxy&#039;&#039;&#039; is a [[galaxy]] with a ring-like appearance. The ring consists of massive, relatively young blue [[star]]s, which are extremely bright. The central region contains relatively little luminous [[matter]]. [[Astronomy|Astronomers]] believe that ring galaxies are formed when a smaller galaxy passes through the center of a larger galaxy. Because most of a galaxy consists of empty space, this &amp;quot;collision&amp;quot; rarely results in any actual collisions between stars. However the [[gravity|gravitational]] disruptions caused by such an event could cause a [[wave]] of star formation to move through the larger galaxy.&lt;br /&gt;
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[[Hoag&#039;s Object]], discovered by [[Art Hoag]] in [[1950]] is an example of such a galaxy.&lt;br /&gt;
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== External link ==&lt;br /&gt;
*[http://antwrp.gsfc.nasa.gov/apod/ap020909.html Hoag&#039;s Object] at [[Astronomy Picture of the Day]].&lt;br /&gt;
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[[Category:Ring galaxies|*]]&lt;br /&gt;
[[Category:Galaxy morphological types]]&lt;br /&gt;
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{{galaxy-stub}}&lt;br /&gt;
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[[bg:Пръстеновидна галактика]]&lt;br /&gt;
[[de:Ringgalaxie]]&lt;br /&gt;
[[hu:Gyűrűs galaxis]]&lt;br /&gt;
[[pl:Galaktyka pierścieniowa]]&lt;br /&gt;
[[sk:Prstencová galaxia]]&lt;br /&gt;
[[sr:Прстенаста галаксија]]&lt;/div&gt;</summary>
		<author><name>84.22.3.111</name></author>
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