✉news SciencePhysics first seen 6 h ago, last 9 min ago, peak #11
Scientists explain how a 300 TeV photon reached Earth
Original: Scientists explain how a 300 TeV photon could reach Earth
Researchers have offered an explanation for how a photon with an energy of 300 teraelectronvolts, one of the highest-energy photons ever detected, could have travelled to Earth. Such extreme gamma rays are expected to be absorbed or degraded over interstellar distances, so the finding has drawn attention from physicists discussing the mechanisms that could allow it to survive the journey and what it reveals about cosmic accelerators.
Why now: The detection defies expectations about how far ultra-high-energy photons can travel, prompting scientific interest.
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- Scientists explain how a 300 TeV photon could reach Earth · Physics World
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