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Fraser
2010-Nov-08, 04:50 PM
Although dark matter is inherently difficult to observe, an understanding of its properties (even if not its nature) allows astronomers to predict where its effects should be felt. The current understanding is that dark matter helped form the first galaxies by providing gravitational scaffolding in the early universe. These galaxies were small and collapsed to [...]

More... (http://www.universetoday.com/77662/missing-milky-way-dark-matter/)