These tiny, high-energy particles from space are often referred to as “ghostly” because they are extremely volatile, or vaporous, and can pass through any kind of matter without changing. Neutrinos, which arrive at Earth from the far reaches of the cosmos, have almost no mass. The particles travel through the most extreme environments, including stars, planets and entire galaxies, and yet their structure remains intact.
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Source: https://www.cnn.com/2025/02/12/science/energetic-neutrino-particle-detection/index.html#openweb-convo