BERLIN — Scientists in Germany have flipped the switch on a 60 million euro ($66 million) machine designed to help determine the mass of the universe’s lightest particle.
The Karlsruhe Tritium Neutrino experiment, or KATRIN, began tests Friday and is expected to begin making actual measurements next year.
Physicists at the Karlsruhe Institute of Technology hope the 200-metric-ton (220-ton) device will narrow down or even pinpoint the actual mass of neutrinos.
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