This reminds me of that quote from Mass Effect:
"This, recruits, is a 20-kilo ferrous slug. Feel the weight! Every five seconds, the main gun of an Everest-class Dreadnought accelerates one to 1.3 percent of light speed. It impacts with the force of a 38-kiloton bomb. That is three times the yield of the city buster dropped on Hiroshima back on Earth. That means: Sir Isaac Newton is the deadliest son-of-a-bitch in space! (...) I dare to assume you ignorant jackasses know that space is empty! Once you fire this hunk of metal, it keeps going 'till it hits something! That can be a ship, or the planet behind that ship. It might go off into deep space and hit somebody else in ten thousand years. If you pull the trigger on this, you are ruining someone's day, somewhere and sometime!"
Responding to the last comment in the image:
You could literally just do reverse Starship Troopers, the movie at least.
You're a bunch of aliens and blam out of no where the nuclear launched manhole obliterates a holy site on your homeworld, your scientists track the trajectory back to Earth, conclude they must have launched it intentionally, and then launch an interstellar jihad against totally unaware Earthlings.
The calculation of its speed was made by high speed camera, as you've probably seen the Mythbusters do. In this case the manhole cover was seen in flight in precisely one frame of high speed camera footage, and for it to go "installed, in flight, gone" in three frames means it would have had to be moving at mach jesus.
It likely didn't make it to space intact; it would have had ultrasonic compression heating on one side and a nuclear explosion on the other. It's probably still here in the form of iron oxide dust scattered about the Northwestern hemisphere.
I love the idea that our first message to aliens might be "FRESH WATER ONLY. NO WASTE."
Surprised no one has posted this but Kyle hill made a video on it
One thing that no one ever talks about with this is the massive air resistance on it going Mach 164 through the atmosphere would incur (albeit for a very brief period)...I bet that would knock 25-50 kmph off it easily.
How to solve the Three Body Problem.
Most likely it just evaporated, or disintegrated or something, but I think its pretty unlikely it survived that absolutely bonkers acceleration.
The Parker Solar Probe moves 120 miles per second as it passes around the Sun. That's nearly half a million miles per hour!
In Stargate SG1 they do that to destroy and invading alien ship approaching Earth.
So has it been replaced ?
Fact check , some of those comparisons were wrong. https://chatgpt.com/share/674ffea4-35e8-800a-8e9a-555180b4c18c
Maybe it desintegrated and thus vanished from the consecutive frame?
Atomic blasts are kind of powerful versus an iron lid.
