http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. A team led by an Indiana University astronomer has found a sample of massive galaxies with properties that suggest that they may have formed relatively recently. This would run counter to the widely-held belief that massive, luminous galaxies (like our own Milky Way Galaxy) began their formation and evolution shortly after the Big Bang, some 13 billion years ago. Further research into the nature of these objects could open new windows into the study of the origin and early evolution of galaxies. http://www.physorg.com/news158585134.html Space & Earth Fri, 10 Apr 2009 12:26:04 EST news158585134 A new Hubble image highlights striking swirling dust lanes and glittering globular clusters in oddball galaxy NGC 7049. http://www.physorg.com/news158329219.html Space & Earth Tue, 07 Apr 2009 13:20:46 EST news158329219 How do galaxies form? The most widely accepted answer to this fundamental question is the model of 'hierarchical formation', a step-wise process in which small galaxies merge to build larger ones. One can think of the galaxies forming in a similar way to how streams merge to form rivers, and how these rivers, in turn, merge to form an even larger river. This theoretical model predicts that massive galaxies grow through many merging events in their lifetime. But when did their cosmological growth spurts finish? When did the most massive galaxies get most of their mass? http://www.physorg.com/news138965763.html Space & Earth Tue, 26 Aug 2008 10:36:03 EST news138965763 Bars abound in spiral galaxies today, but this was not always the case. A group of 16 astronomers, led by Kartik Sheth of NASA's Spitzer Science Center at the California Institute of Technology, has found that bars tripled in number over the past seven billion years, indicating that spiral galaxies evolve in shape. http://www.physorg.com/news136557807.html Space & Earth Tue, 29 Jul 2008 13:43:27 EST news136557807