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We can't yet explain the source of ultra-high-energy cosmic rays hitting Earth.

open Global / Unspecified, Global WS00171
These particles carry more energy than anything we can produce on Earth, and we still don't know exactly what cosmic event launches them our way. Identifying the source could reveal entirely new astrophysical processes.
Category: Science Space
Created at: 2026-07-19T19:57:00Z
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WS00171 | World Solve | https://www.worldsolve.org/index.php?view=problem&id=171

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