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By Jim Shelton
February 10, 2021
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Former Yale postdoc Danielle Speller, who is now as assistant professor at Johns Hopkins University, documents the process of detector assembly. (Credit: Sid Cahn)
The search for dark matter the invisible glue that binds the cosmos and makes up most of the mass of galaxies is a bit like looking for a needle in a near-infinite haystack.
For one thing, scientists don’t know exactly what dark matter is. They are only able to infer its existence based on the gravitational pull it has on visible matter.