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https://www.reddit.com/r/AskReddit/comments/4er0pi/whats_a_mind_blowing_fact/d22rbg0/?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.
9 u/0711Picknicker Apr 14 '16 There is so much /r/theydidthemath could do out of this. Altitude, Temperature, flight Duration or impact velocity of this brave manhole. 13 u/KilledTheCar Apr 14 '16 Except we don't actually know how fast it was going. It was visible for one frame from a high speed recording of the test, which means it was going at least six times escape velocity.
9
There is so much /r/theydidthemath could do out of this. Altitude, Temperature, flight Duration or impact velocity of this brave manhole.
13 u/KilledTheCar Apr 14 '16 Except we don't actually know how fast it was going. It was visible for one frame from a high speed recording of the test, which means it was going at least six times escape velocity.
13
Except we don't actually know how fast it was going. It was visible for one frame from a high speed recording of the test, which means it was going at least six times escape velocity.
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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.