We haven't figured out how to reliably protect Earth from a large asteroid impact.
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Science & Space
We can now detect many dangerous asteroids years in advance, but we still lack a proven way to redirect or destroy one heading for Earth. One unlucky strike could cause damage on a civilization-ending scale.
Team Humans Club. (2026). Problem WS00013: We haven't figured out how to reliably protect Earth from a large asteroid impact.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=13