Yhn SciencePhysics first seen 1 d ago, last 1 h ago, peak #5
Scientists explain how a 300 TeV photon reached Earth
Original: Scientists explain how a 300 TeV photon could reach Earth
Researchers have outlined how a photon carrying an extraordinary 300 teraelectron-volts of energy could have travelled to Earth, addressing a puzzle in high-energy astrophysics. At such energies, photons should normally be destroyed by interactions with background light on their way across the cosmos, so explaining its survival offers new insight into extreme cosmic accelerators and the physics governing ultra-high-energy radiation reaching our planet.
Why now: The finding challenges expectations about how far ultra-high-energy photons can travel, making it notable in physics circles.
Earthastrophysicists300 TeV photon
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