science π Star trail hints at dark matter in distant galaxy
A 2-kiloparsec stellar stream, named Oyashio, was found near the ultra-diffuse galaxy UGC 9050-Dw1. Astronomers located this feature in UGC 9050-Dw1, which is 115 million light-years from Earth. The stream is about 72 parsecs wide and stretches roughly 2 kiloparsecs from a globular cluster candidate. Modeling the stream's curve allows researchers to estimate the galaxy's total mass, implying significant dark matter. Future telescopes will help confirm the stream's origin and map dark matter further out. π