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originally posted by: carewemust
If there was a World War-III NUCLEAR war, would the huge detonations jar the Earth out of its current orbit?
We could lose mass, causing the Earth to either orbit closer to the Sun, or farther away from the Sun.
originally posted by: carewemust
a reply to: RickyD
I keep envisioning these scenes from space travel movies, and Star Trek, where nothing but huge asteroids are orbiting a sun where a planet was, before their "final" World War.
originally posted by: carewemust
Wednesday, February 22, 2023
Greetings ATS Members!
Please read the following explanation of why the Earth stays in orbit around the Sun...
Source: scienceline.ucsb.edu...
The Earth is "falling" around the Sun.
The Earth has some initial momentum - it is moving in a direction, which is perpendicular to the direction of the Sun from the Earth.
The Sun's gravity is enough to keep the Earth from flying off in a straight line, away from the Sun, but not enough to bring the Earth closer in.
The Earth is continually changing its direction of movement, but in such a way that it follows a nearly circular path around the Sun.
If the Sun's gravity were stronger, it would pull the Earth in closer, but then the angle between the Earth's motion would also be changing more rapidly, so it would continue revolving around the Sun.
QUESTIONS:
If there was a World War-III NUCLEAR war, would the huge detonations jar the Earth out of its current orbit?
We could lose mass, causing the Earth to either orbit closer to the Sun, or farther away from the Sun.
Either would be catastrophic for whatever life survives, wouldn't it?
-CareWeMust
originally posted by: carewemust
originally posted by: putnam6
a reply to: carewemust
watch this pretty scary fact-based nuclear scenario
FWIW my bug out spot better have well deep underground bunker
I watched it briefly. Depressing, isn't it? I think once we realize that other non-Earth intelligent life exists, we (humankind) won't even think about nuking ourselves out of existence....evoking pity from other (smarter) species.
originally posted by: LABTECH767
a reply to: carewemust
Think about it like this, while an explosion in the surface of the earth or it's atmosphere may have an affect upon the centre of gravity for the planet it would not do much for it's actually orbital pathway.
However if that explosion is sufficiently powerful to send material at above the escape velocity of the earth into space (the escape velocity not being in this sense to put it into orbit but to actually send it out into space) then that would have a tiny affect, even launching something like Voyager had this affect but it was so small, so negligible as to be of no concern.
Even space material raining down onto the earth has the potential to affect it's orbit but for something to really affect the earth it would have to be so large as to likely be enough to kill all life on the surface of the planet anyway.
I would therefore not worry too much.
Now if we ever crack the anti gravity problem then we may have to start to worry though that would provide both a danger and a solution to that danger as well as providing us with the ability to move the planet, even the sun or the entire solar system should we ever have the need to do so BUT by that time we will likely have left the nest if we still exist OR have split into a new civilization based off world and an earth bound one that will stay on the planet.
Basically it would require a huge amount of energy, a nuclear explosion even the soviet tsar bomba that was the largest nuclear explosion in history though the soviets actually had plans to make one many thousands of times more powerful even than that in there original doomsday weapon plan for a floating ship sized nuclear bomb that would sail the coasts of the soviet union with sensors to detect if a nuclear attack had taken place and then detonated spewing enough radioactive waste and poison into the atmosphere to kill almost all life on earth would not have really affected the planets orbit that much if at all.
No the danger is not changing it's orbit around the sun but other changes to it such as altering the earth's rotation, slowing or speeding it up and indeed even affecting it's axis but the main orbital pathway of the planet and moon system around the sun would likely not be affected above anything other than a negligible level if that.
originally posted by: andy06shake
a reply to: carewemust
A negligible effect would be my bet.
originally posted by: Vroomfondel
I don' think anything we do will have that much of an effect on a planet, ours or otherwise. I always thought it was a bit arrogant for human beings to assume we have that much influence over anything, save for the weak minded lemmings of our own species.