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Ultrahigh-energy cosmic rays twist and turn on their way to Earth, which has made it nearly impossible to identify the colossal monsters that create them.
Cosmic rays may have given right-handed genetic helixes an evolutionary edge at the beginning of life’s history.
Angela Olinto’s new balloon experiment takes her one step closer to the unknown source of the most energetic particles in the universe.
Physicists are beginning to unravel the mysteries of ultrahigh-energy cosmic rays, particles accelerated by the most powerful forces in the universe.