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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Imagine that the Earth was perfectly smooth and that you and a friend were standing side by side along the equator. Look around. The world looks flat doesn’t it?
Now both of you face north and start walking. If the world was truly flat, you guys would walk side by side forever. Instead, you two will eventually come together as you approach the North Pole. Nothing is pushing you together. You naturally come together because the world you’re in is curved even though it appears flat. How soon you come together depend on how curved your world is. E.g. on the Moon, you and your friend wouldn’t have to walk as far to come together because the Moon is more curved.
That’s what gravity is. For a long time, people thought that it was a force that pulls things together. But no, it is evidence that the true shape of the world is curved.
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