Comments on: Old Galaxies Stick Together In A Young Universe http://www.universetoday.com/2008/04/01/old-galaxies-stick-together-in-a-young-universe/ Space and astronomy news Sat, 21 Nov 2009 21:17:24 -0600 http://wordpress.org/?v=2.8.6 hourly 1 By: SBS http://www.universetoday.com/2008/04/01/old-galaxies-stick-together-in-a-young-universe/comment-page-1/#comment-49686 SBS Tue, 13 Jan 2009 02:29:04 +0000 http://www.universetoday.com/2008/04/01/old-galaxies-stick-together-in-a-young-universe/#comment-49686 Einstein said that the larger the object, the more gravitational pull it would have. So couldn't that explain why the older galaxies that have the larger red giant stars in them be held closer together? Einstein said that the larger the object, the more gravitational pull it would have. So couldn't that explain why the older galaxies that have the larger red giant stars in them be held closer together?

]]> By: JN http://www.universetoday.com/2008/04/01/old-galaxies-stick-together-in-a-young-universe/comment-page-1/#comment-18509 JN Sat, 19 Apr 2008 09:18:30 +0000 http://www.universetoday.com/2008/04/01/old-galaxies-stick-together-in-a-young-universe/#comment-18509 Hi Frend http://www.hypothesis-of-universe.com/en/index.php?nav=home Hi Frend
http://www.hypothesis-of-universe.com/en/index.php?nav=home

]]> By: ScepticTim http://www.universetoday.com/2008/04/01/old-galaxies-stick-together-in-a-young-universe/comment-page-1/#comment-17148 ScepticTim Wed, 02 Apr 2008 16:18:22 +0000 http://www.universetoday.com/2008/04/01/old-galaxies-stick-together-in-a-young-universe/#comment-17148 "We can see that the old, red galaxies clump together far more strongly than the young, blue galaxies, so we know that their invisible dark matter halos must be more massive." This suggests to me that the gravity well associated with these 'clumps' is far deeper than that associated with the young, blue, galaxies. I wonder if the red shift caused by the deeper well has been properly accounted for. If not, then these galaxies would appear to be more distant, hence older, than they really are, would they not? "We can see that the old, red galaxies clump together far more strongly than the young, blue galaxies, so we know that their invisible dark matter halos must be more massive."

This suggests to me that the gravity well associated with these 'clumps' is far deeper than that associated with the young, blue, galaxies. I wonder if the red shift caused by the deeper well has been properly accounted for. If not, then these galaxies would appear to be more distant, hence older, than they really are, would they not?

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