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Where cosmic rays are born

By Sid Perkins / February 16, 2013

Here we go! Shock waves in the clouds of gas surrounding an exploding star (as in this artist’s depiction) accelerate charged particles called protons to very high speed, creating cosmic rays.
Credit: Greg Stewart, SLAC Nat'l Accelerator Lab.

New evidence links origin of these very energetic particles to massive explosions of distant stars

Posted in Earth & Sky, Space | Tagged astrophysicist, atoms, cosmic rays, galactic magnetic field, gamma rays, getinvolved, Harvard University, light year, light-speed, Milky Way, Patrick Slane, protons, Stanford University, Stefan Funk, subatomic particle, supernova, supernova remnant, topstories