« on: Yesterday at 16:47:16 »
"Space-time" is said to be "curved". In Relativity, space and time are not the separate and distinct things they were considered in Newtonian physics. So, we have three spatial dimensions, Up-down, left-right, front-back. and a time dimension, past-future. and they are all "connected" in a way.
This part I don't get (science is not my strong suit). I thought that space is bent around the star, so how can this stick defy space that is bent, even if equipped with EM field?
And saying that space-time is curved means that it doesn't adhere to the Euclidean rules of geometry.
Now, that being said, it is also important to remember that space-time is not some rigid structure that everything is fixed within. If that were the case, then movement would be impossible. Everything would be frozen in its point in space-time.
Nothing is "forced" to follow the local space-time curvature. In can exert an influence, but it is not in insurmountable. Local influences and forces can take precedent.
For example: The universe is expanding, and this is explained by space itself expanding. But this does not mean everything in the universe is expanding. You are not expanding. Earth is not expanding, the solar system is not expanding, our galaxy is not expanding. This is because there are other influences (molecular forces, gravity) that hold these things in shape despite space itself expanding.
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