A study shows that ultrahigh-energy cosmic rays, the most energetic type of particle detected, do not comprise only protons as previously believed. Data collected from a South Pole observatory indicates a surprising lower fraction of protons within these cosmic rays. This finding suggests a more complex composition of these particles than previously understood without the anticipated predominance of protons, prompting a reevaluation of theoretical models regarding ultrahigh-energy cosmic rays.
Data from a South Pole observatory indicates that ultrahigh-energy cosmic rays contain a lower fraction of protons than previously anticipated, challenging existing theories about their composition.
Physicists have discovered that ultrahigh-energy cosmic rays, which were once thought to be solely composed of protons, may actually include a variety of other particles.
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