SMRTR Science & EngineeringAug 17, 2026Interesting Engineering

Cygnus X-3 becomes the highest-energy gamma-ray source known anywhere in space

SMRTR summary

China's LHAASO observatory has detected gamma rays from Cygnus X-3, a binary star system, confirming it as the highest-energy particle accelerator ever found, pushing particles to at least 30 PeV. This challenges existing theories and opens new ways to study how extreme cosmic rays are produced in our galaxy.

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