u/SteveCampo98

TIL in 1957, a nuclear explosion blasted a manhole cover in the air at 150,000mph (six times Earth’s exit velocity). Scientists think it was either vaporized, or blasted into space.
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TIL in 1957, a nuclear explosion blasted a manhole cover in the air at 150,000mph (six times Earth’s exit velocity). Scientists think it was either vaporized, or blasted into space.

en.wikipedia.org
u/SteveCampo98 — 1 day ago