Scientists Uncover Origins of the Universe's Strongest Cosmic Rays
Researchers suggest that the most powerful cosmic rays, or PeVatrons, may originate from young supernova remnants, particularly in the first decade or two after a star's explosion, with dying stars like Tycho's supernova being potential sources. The study highlights the importance of dense surrounding shells and timing in accelerating particles to extreme energies, potentially solving the mystery of the universe's most energetic cosmic rays.