All require massive shielding to keep out the far more common cosmic rays. Almost nothing stops a neutrino, but the key word is “almost.” An immense device operated by patient observers will occasionally detect one. Billions pass harmlessly through your fingertip every second, often after passing through the Earth or across the universe. They gush from stars, the sun, and earthly reactors and accelerators. James Hansen and the Truth of Global Warming, 2007, etc.) explains that nuclear reactions produce neutrinos. In this enthusiastic account of Project IceCube, physicist Bowen ( Censoring Science: Inside the Political Attack on Dr. Occupying a cubic kilometer under the ice at the South Pole is a huge instrument dubbed one of the “seven wonders of modern astronomy.” It doesn’t search for light like a telescope but rather ghostly subatomic particles called neutrinos that fill the universe. An account of a telescope that “is unlike any other telescope you’ve ever seen or heard of, a marvel of science “buried more than a mile deep in the ice at the geographic South Pole.”
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