Summary

A new study published in Physical Review Letters by the IceCube Collaboration reports evidence that the energy spectrum of astrophysical neutrinos is not a simple straight line. Astrophysical neutrinos are tiny, nearly massless particles produced when high-energy cosmic rays interact with matter or radiation near sources such as active galactic nuclei, gamma-ray bursts, and supernova remnants. Because they barely interact with anything, they travel from the edges of the observable universe in straight lines, carrying information about the environments that produced them.

AI summaries can be wrong sometimes—always verify important details using the source article.