SouthEasternGuy t1_iwyko07 wrote
Reply to comment by TheRidgeAndTheLadder in Dark Matter as an Intergalactic Heat Source. Spectra from quasars suggest that intergalactic gas may have been heated by a form of dark matter called dark photons. by MistWeaver80
Dark matter is basically the name specifically for the stuff that is having gravitational effects on things but that they can’t attribute to a proper source. It happens A LOT so they just call it dark matter.
It’s not controversial by any means, it’s specifically an unknown
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