Yhn SciencePhysics first seen 2 d ago, last 23 min ago, peak #5
Scientists Explain How a 300 TeV Photon Reached Earth
Original: Scientists explain how a 300 TeV photon could reach Earth
Physicists have outlined how an extremely high-energy photon, carrying about 300 teraelectronvolts, could have travelled to Earth. Such photons are normally expected to be absorbed or degraded over cosmic distances, so explaining its arrival has implications for understanding extreme astrophysical sources and the limits of known particle physics.
Why now: The finding challenges assumptions about how high-energy photons survive interstellar travel, drawing attention from the physics community.
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