Physicists explain mysterious dark matter deficiency in galaxy pair: Self-interacting dark matter theory explains why two galaxies have less dark matter than others – Science Daily

A new theory about the nature of dark matter helps explain why a pair of galaxies about 65 million light-years from Earth contains very little of the mysterious matter, according to a study led by a physicist at the University of California, Riverside.Dark matter is nonluminous and cannot be seen directly. Thought to make up 85% of matter in the universe, its nature is not well understood. Unlike normal matter, it does not absorb, reflect, or emit light, making it difficult to detect.
The preva…

Click here to view the original article.