I was looking at how our solar system works and see that essentially the curvature from space and gravity or, lack of creates the movement of our planetary systems. I couldn’t seem to make sense of the details of how space is similar to a fabric and can be shaped in some way.
The example used was the age old blanket with a bowling ball in the center creating a wide curvature leading to the edges of the blanket.
How is this possible but can’t be seen, nor does it cause friction?
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Gotta say I don’t really like all these posts saying that you can see it. Effects, sure. Yes, light shows it pretty well, but you are still looking at light, not spacetime.
I think its worth to point out that the idea of space, or in the more modern thinking of it, spacetime, is our creation. Its not just any random creation, yes, its one that works really really well. General relativity has been tested to hell and back. But its just our depiction of reality. Its what we think is going on.
Anyway. Its not the only thing we cannot see. Infrared for example. Sure we can see it with the equipment. We evolved to see certain stuff and without the help we are oblivious of everything else.
But yeah, I think it also comes down to the fact that spacetime is special in a way, different from everything else we interact with.
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