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Full Version: [ScienceD] How do you weigh a galaxy? Especially the one you're in?
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How do you weigh a galaxy? Especially the one you're in?

Pinning down the mass of a galaxy may seem like an esoteric undertaking, but scientists think it holds the key to unraveling the nature of the elusive, yet-to-be-seen dark matter, and the fabric of our cosmos. A new technique promises more reliable estimates of the masses of galaxies.




http://feeds.sciencedaily.com/~r/science...173803.htm