If Dark Matter neither emits nor absorbs light, than can it really be called "matter"? Also is there a way to quantify the effects of light seen 'through' dark matter? Would we even know if the dark matter was in the way between the observer and the light source?
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If Dark Matter neither emits nor absorbs light, than can it really be called "matter"? Also is there a way to quantify the effects of light seen 'through' dark matter? Would we even know if the dark matter was in the way between the observer and the light source?
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