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[ad_1] In a brand new Nature Astronomy learn about, a global crew led via astrophysicists from the College of California, Irvine and Pomona School document how, when tiny galaxies collide with larger ones, the larger galaxies can strip the smaller galaxies in their darkish topic -- topic that we will't see immediately, however which astrophysicists assume will have to exist as a result of, with out its gravitational results, they could not give an explanation for such things as the motions of a galaxy's stars. It is a mechanism that has the prospective to give an explanation for how galaxies may be able to exist with out darkish topic -- one thing as soon as idea inconceivable. It began in 2018 when astrophysicists Shany Danieli and Pieter van Dokkum of Princeton College and Yale College noticed two galaxies that appeared to exist with out maximum in their darkish topic. "We have been anticipating massive fractions of darkish topic," stated Danieli, who is a ...