Dark galaxy and User talk:212.32.121.103: Difference between pages

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October 2008

Please refrain from making unconstructive edits to Wikipedia, as you did to UNIT and List of Doctor Who vehicles. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Thank you. —Josiah Rowe (talk • contribs) 00:07, 13 October 2008 (UTC)

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+==October 2008==
-A '''dark galaxy''' is a [[galaxy]]-sized object containing very few or no [[stars]] (hence 'dark'). Held together by [[dark matter]], it may also contain gas and [[cosmic dust|dust]]. No dark galaxy with a [[black hole]] as a center has yet been discovered.
+[[Image:Information.svg|25px]] Please refrain from making unconstructive edits to Wikipedia{{#if:UNIT|, as you did to [[:UNIT]]}} and [[List of Doctor Who vehicles]]. Your edits appear to constitute [[Wikipedia:Vandalism|vandalism]] and have been [[Help:Reverting|reverted]]. If you would like to experiment, please use the [[Wikipedia:Sandbox|sandbox]]. {{#if:|{{{2}}}|Thank you.}}<!-- Template:uw-vandalism2 --> —[[User:Josiah Rowe|Josiah Rowe]] <small>([[User talk:Josiah Rowe|talk]] • [[Special:Contributions/Josiah Rowe|contribs]])</small> 00:07, 13 October 2008 (UTC)
-==Candidates==
-===HE0450-2958===
-[[HE0450-2958]] is an unusual [[quasar]] as no host galaxy has been detected around it. It has been suggested that this may be a dark galaxy in which a quasar has become active.
-===HVC 127-41-330===
-[[HVC 127-41-330]] is a high velocity cloud between [[M31]] and [[M33]].
-===VIRGOHI21===
-The discovery of [[VIRGOHI21]] was announced in February 2005, and it was the first good candidate for a true dark galaxy. It was found by looking for the 21cm-wavelength radio waves emitted by hydrogen (HI).  Its dynamics are apparently inconsistent with the predictions of the MOND theory (Funkhouser 2005).
-==See also==
-* [[Low surface brightness galaxy]]
-* [[Dwarf spheroidal galaxy]]
-* [[Dark matter halo]]
-==External links==
-* Universe Today, [http://www.universetoday.com/2007/02/26/some-galaxies-are-made-almost-entirely-of-dark-matter/ Some Galaxies Are Made Almost Entirely of Dark Matter]
-==References==
-*{{cite news| last =Britt | first =Roy | title =First Invisible Galaxy Discovered in Cosmology Breakthrough | work =Space.com | url = http://www.space.com/scienceastronomy/050223_dark_galaxy.html | date =2005-02-23 }}
-*{{cite news| last =Battersby | first =Stephen | title =Astronomers find first 'dark galaxy' | work =New Scientist | url = http://www.newscientist.com/article.ns?id=dn4272 | date =2003-10-20 }}
-*{{cite news| last =Clark | first =Stuart  | title =Astronomers claim first 'dark galaxy' find | work =NewScientist.com news service | url =http://www.newscientist.com/article.ns?id=dn7056 | date=2005-02-23| accessdate =2006-10-26 }}
-*{{cite journal| last =Funkhouser| first =Scott| title =Testing MOND with VirgoHI21 | journal =Monthly Notices of the Royal Astronomical Society | volume =364| pages =237 | date =2005 | url =http://arxiv.org/abs/astro-ph/0503104 | accessdate =2006-10-26| doi =10.1111/j.1365-2966.2005.09565.x }}
-*{{cite journal| last =Shiga | first =David | title =Ghostly Galaxy: Massive, dark cloud intrigues scientists | journal =Science News Online | volume =167 | issue =9 | pages =131 | date =2005-02-26 | url =http://www.sciencenews.org/view/generic/id/5929/title/Ghostly_Galaxy_Massive%2C_dark_cloud_intrigues_scientists | accessdate =2008-09-14 | doi =10.2307/4015891 }}
-[[Category:Physical cosmology]]
-[[Category:Dark matter]]
-[[Category:Hypothetical galaxies]]
-{{galaxy-stub}}
-{{physics-stub}}
-[[de:Dunkle Galaxie]]
-[[es:Galaxia oscura]]
-[[fr:Galaxie sombre]]
-[[nl:Donker melkwegstelsel]]
-[[fi:Pimeä galaksi]]
-[[zh:暗星系]]