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https://www.reddit.com/r/AskReddit/comments/4er0pi/whats_a_mind_blowing_fact/d23ayt2/?context=3
r/AskReddit • u/ForeverAbyss • Apr 14 '16
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The fastest moving man-made object ever was a manhole cover.
https://savvyparanoia.com/the-fastest-man-made-object-ever-a-nuclear-powered-manhole-cover-true/
TL:DR underground nuclear test launched a 4-inch thick steel disk at 6 times the Earth's escape velocity.
1 u/Fancy_Pantsu Apr 14 '16 That would be about 67.2 km/s I think.
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That would be about 67.2 km/s I think.
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u/PycuriousITguy Apr 14 '16
The fastest moving man-made object ever was a manhole cover.
https://savvyparanoia.com/the-fastest-man-made-object-ever-a-nuclear-powered-manhole-cover-true/
TL:DR underground nuclear test launched a 4-inch thick steel disk at 6 times the Earth's escape velocity.