I just can’t put my head around the fact that gravity isn’t just a force
EDIT : I now get how it gets stretched and how it’s comparable to putting a ball on a stretchy piece of fabric and everything but why is *gravity* comparable to that. I guess my new question is what is gravity ? 🙂 and how can weight affect it ?
In: Physics
Interestingly, we know for a fact it causes time to distort because of things like GPS. The satellites are far away from the Earth’s surface, and time flows differently for them than it does for us, down here time is a little slower (because we’re closer to a large mass, Earth).
The difference is very tiny, but it’s big enough that it adds up over time and causes the GPS accuracy to go down, as it uses accurate time measurements to determine position, speed, etc. [Another experiment involved two aircraft](https://en.wikipedia.org/wiki/Hafele–Keating_experiment) with clocks on board flying in opposite directions, also causing time to slow down for the aircraft flying east (because when you go faster your mass goes up and more mass means more time distortion).
Again, these differences are imperceptible to us humans, but that they exist is very spooky, to me at least.
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