Last Matter’s Last Stand – Scientific American


Scientific American April 2021

A new experiment could capture invisible particles that previous detectors did not have

S.Scientists like to say that negative results are just as important as positive ones, but after several decades of not finding anything, researchers can be forgiven for feeling impatient. As early as the 1990s, attempts were made to identify the particles that make up dark matter, the omnipresent but inviolable material that apparently fills the cosmos. Since then, physicists have found more and more evidence that dark matter is real, but not a single sign of the stuff itself. A new version of the long-running XENON experiment that started late last year is set to break this pattern for good.

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