Sharmila Kuthunur is a Seattle-based science journalist covering astronomy, astrophysics and space exploration. Follow her on X @skuthunur.
, a $700-million telescope nearing completion in northern Chile, plans to gather clues about the nature of dark matter by studying gaps between streams of — the invisible, universe-permeating substance that surrounds most galaxies in halos but is yet to be directly detected.
In stellar streams, these effects show up as"kinks," or gaps, in the starry trails. It is these disturbances that can be imaged by the Rubin Observatory's unprecedented digital camera, according to theby telltale motions unique to their respective cohorts, are particularly useful candidates to study the nature of dark matter, scientists say.
"I'm really excited about using stellar streams to learn about dark matter," Nora Shipp, a postdoctoral fellow at Carnegie Mellon University whose previous research discovered 11 new stellar streams around the Milky Way, said in a."With Rubin Observatory, we'll be able to use stellar streams to figure out how dark matter is distributed in our galaxy from the largest scales down to very small scales.
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