Here’s something you rarely see so up close. The photograph above shows one of 18 optical modules inside KM3NeT, a massive detector for neutrinos, which are nearly massless, neutrally charged particles that permeate every corner of the universe. The bubble-like demeanor of the module is reminiscent of where KM3NeT is located: deep under the Mediterranean Sea.
The photograph, titled “Underwater Hunting,” was a finalist for the 2025 Global Physics Photowalk. The competition, held…

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