<ul><li>Supernovas can become powerful particle colliders in the universe if they pass through a lot of gas before exploding, recent research suggests.</li><li>Cosmic rays, high-energy particles from the distant universe, include the most powerful ones reaching up to one peta-electron volt, surpassing the collision energies of the Large Hadron Collider.</li><li>Astronomers have found evidence that certain supernova remnants can generate extreme PeV cosmic rays by losing a significant amount of mass and maintaining a dense shell of material around the star before exploding.</li><li>The shock wave from the supernova interacts with the dense shell, accelerating subatomic particles through powerful magnetic fields, eventually leading to the production of cosmic rays; however, the system loses steam after some time.</li></ul>

Scientists may have discovered the most powerful particle collider in the universe

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