Is The Mysterious X-Ray Signal In The Perseus Cluster Evidence Of Dark Matter?

We can't even define dark matter, other than it being some blanket term for something that must exist due to unexplainable gravitational influence on the movements and appearance of stars or galaxies. Based on indirect evidence, astronomers believe that dark matter is the dominant type of matter in the Universe – everything else has been conjecture. But astronomers using high-energy observatories believe they may have discovered a clue that hints at this elusive invisible ingredient.  read more

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