High Energy2026-06-253 minarXiv:2606.27430Hidden Ultrarelativistic Spine in a Blazar JetIn 2017, the Antarctic neutrino telescope IceCube detected a particle with an energy of about 290 TeV arriving from deep space.Y. Y. Kovalev·F. Eppel·D. C. Homan·A. V. Plavin·P. Benke·A. K. Erkenov·J. L. Gomez·M. Kadler·K. I. Kellermann·P. I. Kivokurtseva·Yu. A. Kovalev·M. L. Lister·V. A. Makeev·A. V. Popkov·A. B. Pushkarev·E. Ros·T. Savolainen·Yu. V. Sotnikova·S. V. TroitskyDoppler effectLorentz transformationsAlbert EinsteinEdwin HubbleFritz Zwickyjetactive galactic nucleusactive galactic nucleusspin👍👎☆SimplePopularAdvanced