High-Energy Astronomy / Neutrinos / Gamma-rays / X-Rays / Cosmic Rays is a group for researchers, professionals, and enthusiasts exploring energetic cosmic phenomena. Discussions cover high-energy astrophysics topics like neutrinos, gamma-rays, X-rays, and cosmic rays. Members share insights on theoretical models, observational techniques, data analysis, and advancements in instrumentation. Topics include supernova remnants, active galactic nuclei, pulsar wind nebulae, dark matter searches, and multimessenger astronomy. This group fosters cross-disciplinary collaboration and knowledge exchange in the evolving field of high-energy astrophysics.