Astronomers Spot First Stellar Stream Beyond Milky Way, Offering New Dark Matter Probe

Astronomers have identified the first globular cluster stellar stream outside the Milky Way, a faint trail of stars that follows the gravitational pull of its host galaxy. This discovery opens a new avenue for studying dark matter in distant galaxies, as the stream’s structure can reveal the underlying distribution of invisible mass. By mapping these stellar pathways, scientists hope to extend dark‑matter mapping beyond our own galaxy and gain insight into the cosmic web that shapes the universe.