Cosmic breadcrumb: first globular-cluster stellar stream spotted beyond the Milky Way
TL;DR Summary
Astronomers discovered the first globular-cluster stellar stream outside the Milky Way, in a galaxy about 115 million light-years away, by analyzing archival data from the Hubble Space Telescope. The faint stellar trail reveals the host galaxy's gravitational field and total mass, offering a new way to map dark matter and understand how galaxies form and evolve across the universe.
- Astronomers use a trail of stars beyond the Milky Way to map a distant galaxy’s dark matter CNN
- Evidence for the first globular cluster stellar stream beyond the Milky Way Nature
- Cosmic breadcrumb trail reveals hidden dark matter news.northwestern.edu
- Stellar stream beyond Milky Way offers new tool to map dark matter Phys.org
- As This Ancient Star Cluster Unravels, a Never-Before-Seen Star Ribbon is Forming Under the Influence of Dark Matter The Debrief
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