LHAASO J2108+5157 remains a cosmic puzzle, with new studies revealing no clear counterpart, leaving the ultra-high energy gamma-ray source shrouded in mystery.
Deep in the cosmos, an enigmatic object emits gamma rays at energies more than 100 TeV, an intensity far beyond what we typically observe. Discovered in 2021 by the Large High Altitude Air Shower Observatory (LHAASO), LHAASO J2108+5157 is unlike anyt... [5651 chars]