The Mystery of Dark Matter (4/4): Most Of Our Universe Is Missing. A mystery exists! Galaxies do not seem to have enough mass for stars to orbit at their observed speeds. Galaxies should be flyi... | more...
Tags: dark matter universe galaxies mass stars speed science engery astronomy cosmology electromagnetic radiation gravity gravitational background clusters big bang lensing cosmic microwave atoms neutrinos axions supersymmetric non baryonic particles photons hot cold theories
Upload by: second on 08-04-2010.
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