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View Full Version : Astronomy Without A Telescope – Secular Evolution



Fraser
2010-Dec-25, 09:40 PM
A traditional galaxy evolution model has it that you start with spiral galaxies – which might grow in size through digesting smaller dwarf galaxies – but otherwise retain their spiral form relatively undisturbed. It is only when these galaxies collide with another of similar size that you first get an irregular ‘train-wreck’ form, which eventually [...]

More... (http://www.universetoday.com/81814/astronomy-without-a-telescope-secular-evolution/)