Ring galaxy: Difference between revisions
wikademia>Lightbot Units/dates/other |
wikademia>Xqbot m robot Adding: he:גלקסיה טבעתית |
||
| Line 20: | Line 20: | ||
[[fr:Galaxie à anneau]] | [[fr:Galaxie à anneau]] | ||
[[it:Galassia ad anello]] | [[it:Galassia ad anello]] | ||
[[he:גלקסיה טבעתית]] | |||
[[hu:Gyűrűs galaxis]] | [[hu:Gyűrűs galaxis]] | ||
[[nn:Ringgalakse]] | [[nn:Ringgalakse]] | ||
Revision as of 02:57, 20 February 2009
A ring galaxy is a galaxy with a ring-like appearance. The ring consists of massive, relatively young blue stars, which are extremely bright. The central region contains relatively little luminous matter. 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 "collision" rarely results in any actual collisions between stars. However the gravitational disruptions caused by such an event could cause a wave of star formation to move through the larger galaxy.
Hoag's Object, discovered by Art Hoag in 1950 is an example of such a galaxy.
See also
External links
 |
This galaxy-related article is a stub. You can help Wikipedia by expanding it. |
bg:Пръстеновидна галактика de:Ringgalaxie es:Galaxia anular fr:Galaxie à anneau it:Galassia ad anello he:גלקסיה טבעתית hu:Gyűrűs galaxis nn:Ringgalakse pl:Galaktyka pierścieniowa sk:Prstencová galaxia sl:Obročasta galaksija sr:Прстенаста галаксија sv:Ringformig galax th:ดาราจักรชนิดวงแหวน zh:環星系