Dark matter zoom 2 (IMAGE)
Caption
Projected dark matter density map, created using a simulation measuring 2.4 billion light years on each side. The inset square (bottom left) is the deepest zoom in the simulation: it is only 783 light years across, equivalent to 500 times the size of the solar system. In the inset square, the smallest clearly visible dark matter haloes have a mass comparable to that of the Earth (0.000003 the mass of the Sun).
Credit
Dr Sownak Bose, Center for Astrophysics, Harvard University.
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