A team of astrophysicists affiliated with multiple institutions in the U.S., one in Germany and one in Canada, has developed a new theory to explain the existence of odd, dark matter–free dwarf galaxies. In their paper published in the journal Nature, the researchers propose that a collision between two dwarf galaxies could explain the dark matter–free dwarf galaxies that have been discovered over the past several years. Eun-jin Shin and Ji-hoon Kim with Seoul National University have published a News & Views piece in the same journal issue, outlining the work and findings by the researchers in this new effort.
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Source: Phys.org