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发帖数: 1994 | 1 Dark Matter Map
Credit: J.-P. Kneib (Observatoire Midi-Pyrenees, Caltech) et al., ESA, NASA
Explanation: The total mass within giant galaxy cluster CL0025+1654, about 4.5 billion
light-years away, produces a cosmic gravitational lens -- bending light as predicted by
Einstein's theory of gravity and forming detectable images of even more distant background
galaxies. Of course, the total cluster mass is the sum of the galaxies themselves, seen as
ordinary luminous matter, plus the cluster's |
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