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Buried under the Antarctic ice, the IceCube experiment was designed primarily to capture particles called neutrinos that are produced by powerful cosmic events, but it is also helping scientists learn about the fundamental nature of these ghostly particles.
At a meeting of the American Physical Society (APS) in Washington, D.C., this week, scientists with the IceCube collaboration presented new results that contribute to an ongoing mystery about the nature of neutrinos. These particles pour down on Earth from the sun, but they mostly pass unimpeded, like ghosts, through regular matter.
The new results support evidence of a strange symmetry in measurements of one neutrino mass. In particle physics, symmetries often indicate underlying physics that scientists haven’t yet unearthed.
Close in on: 围住,接近。
Particle: n.粒子,质点。
Neutrino: [核物理学] 中微子。
Pour down: [雨] 倾盆而下。
Unimpeded: adj. 无障碍的,无阻挡的。
Symmetry: n. 对称。