/sci/ - Science & Math

>>15894934
>Is it safe to say that gravity and time are functionally the same thing when at its extremes then?
Time is definitely it's own thing, but it might be safe to say that gravity is functionally the same as energy when it's at its extremes. Even more extreme than a black hole singularity is probably the Planck Epoch of the Big Bang. This is less than 1 planck time after the Big Bang started, so up to about 10^-43 seconds. Gravity was unified with all the other forces and all the matter in the whole universe was compressed into a size less than a single atom. Everything was basically energy, there were no forces or particles, the temperature was trillions of kelvin, the conditions were too extreme. Gravity separated from the other 3 forces just after the Planck Epoch
https://en.wikipedia.org/wiki/Grand_unification_epoch
There's a full timeline here
https://en.wikipedia.org/wiki/Chronology_of_the_universe#Tabular_summary

Newtonian gravity treats gravity like a force, like the other fundamental forces. A force that attracts things to one another. But general relativity treats gravity as the curvature of spacetime. And the spacetime becomes curved from mass. It actually kind of becomes compressed which causes things to basically fall towards eachother. If you look at picrel there's a planet going around through space compressing the spacetime as it moves, this is more what it looks like. So really you could say that gravity is not a force at all is is just the resulting shape of spacetime caused by mass. And the more spacetime is curved (compressed) the slower time goes

as another example. See this star or whatever moving around through space and compressing the spacetime as it moves. Then if you pause the video, then imagine when you paused the video the star exploded so it was no longer there but the spacetime was still compressed and everything was just still and no longer moving. That's kind of what I mean

>>15203194
i just meant that those particular diagrams that show the earth on some kind of 2D sheet aren't showing what's actually happening. Teachers etc should just show what's actually happening when a body with large mass distorts spacetime like in picrel