Reposted by Sarah Pearson
tl;dr We found a globular cluster stellar stream candidate in another galaxy! If this holds up, this will be an important new chapter in stellar stream and dark matter research.
(w/ @spacewsarah.bsky.social @jakenibauer.bsky.social and more)
www.nature.com/articles/s41...
nature.com
Evidence for the first globular cluster stellar stream beyond the Milky Way - Nature
Deep Hubble Space Telescope imaging of the ultra-diffuse galaxy UGC 9050-Dw1 reveals an extragalactic globular cluster stream, with analysis and modelling probing the rich dark matter content of the h...