A Ghostly Ribbon of Stars Reveals Hidden Dark Matter
The finding in UGC9050-Dw1 gives astronomers a new way to map dark matter in other galaxies, which has been difficult to measure directly.
5 Articles
5 Articles
A ghostly ribbon of stars reveals hidden dark matter
A faint ribbon of stars around a distant galaxy has become the first globular cluster stellar stream ever identified beyond the Milky Way. Because the stars trace the galaxy’s gravity, researchers used the stream to estimate how much invisible dark matter surrounds it and how that matter is distributed. The breakthrough offers astronomers a promising new way to investigate one of the universe’s greatest mysteries.
Breakthrough in a Bizarre Galaxy Could Help Unlock the Mystery of Dark Matter
The first globular cluster stellar stream found beyond the Milky Way shows that these faint structures can be used to study dark matter in other galaxies. A faint ribbon of stars stretching across a galaxy can preserve a record of how that system has evolved. Known as globular cluster stellar streams, these long, coherent structures [...]
If you've ever wondered how you weigh something you can't see, this story is going to interest you. Hubble just helped an international team find a clue they've been looking for for years: a dim ribbon of stars capable of rattling out the dark matter of a galaxy that isn't ours. The find was hidden in images taken by the telescope in September 2022. No one had repaired that curved line of stars of just 2,000 light years in length, until a group …
Researchers have detected a stellar stream originating from a globular cluster in the ultra-diffuse galaxy UGC9050-Dw1, marking the first such observation outside the Milky Way. The discovery, published in the journal Nature, reveals new possibilities for studying dark matter in distant galaxies. Stellar stream detected in ultra-diffuse galaxy. Stellar streams, which are long, faint structures of stars, can provide information about the evolutio…
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