Talk:De Sitter universe

From Wikipedia, the free encyclopedia

WikiProject Physics This article is within the scope of WikiProject Physics, which collaborates on articles related to physics.
??? This article has not yet received a rating on the assessment scale. [FAQ]
??? This article has not yet received an importance rating within physics.

Help with this template Please rate this article, and then leave comments to explain the ratings and/or to identify its strengths and weaknesses.

[edit] This Doesn't Make Sense to Me

"Acceleration becomes faster than light" is apples and oranges to me. FelisSchrödingeris (talk) 06:50, 15 January 2008 (UTC)

[edit] Question

Should this sentence

If our universe is approaching a de Sitter universe then eventually we will not be able to observe any galaxies other than our own Milky Way

instead read ...

If our universe is approaching a de Sitter universe then eventually we will not be able to observe any galaxies beyond the Local (Virgo) Supercluster

?. Isn't our supercluster being held together by the Great Attractor?
Also I think these should be kept separate articles. The De Sitter space article is all math
Regards,
70.27.103.81 03:29, 6 October 2005 (UTC)

I'm not sure the Virgo Supercluster is a bound system gravitationally, as the text of that article suggests that all galaxies in it are receding from each other due to Hubble expansion. The Local Group is bound, if I recall correctly. --Christopher Thomas 00:19, 9 January 2006 (UTC)

[edit] Merge proposal

Keep them separate. The De Sitter space article is the pure mathematical description of it, uncluttered by cosmological topics. Those cosmological aspects are better discussed it a separate article. It is sufficient for the two to mutually link each other.

panini —The preceding unsigned comment was added by 71.139.109.107 (talk • contribs) on 10:04, 11 November 2005.

I agree that the two articles should remain seperate, for the obvious reason that they are not covering the same topic. The math of the De Sitter space article is supplementary to the cosmological explanations of the De Sitter universe article. Can we somehow remove the banner suggesting the merger, it can confuse and distract people. - Mephistophyles 23:05, 24 December 2005 (UTC)