NEW DARK MATTER EXPERIMENT AT CERN MOVES FORWARD WITH CONSTRUCTION OF PROTOTYPE DETECTOR

All visible matter in the universe – stuff that makes up stars and galaxies –  contributes to only 5% of the total mass-energy content of the Universe. 

Another 27% percent comprises a mysterious dark matter that feels only feebly (if at all) any of the three fundamental forces known to physicists – weak, strong and electromagnetism. The only way we “see” dark matter is via its gravitational effects in cosmological observations. For example, our galaxies are rotating at such spectacular speeds that they should be ripping themselves apart, only to be held together by gravity from dark matter. 

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Source: https://www.elte.hu/en/