Chasing dark matter with the oldest stars in the Milky Way
Just how quickly is the dark matter near Earth zipping around? The speed of dark matter has far-reaching consequences for modern astrophysical research, but this fundamental property has eluded researchers for years. In a paper published Jan. 22 in the journal Physical Review Letters, Princeton researchers provided the first clue: The solution to this mystery, it turns out, lies among some of the oldest stars in the galaxy.
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