Why is the fabric of space bendable but also not visible by eye.

Question

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?

In: 2411

Answer 1

You CAN see it in extreme cases (or, at least its effect) – like light bending around a black hole or gravitational lensing around a cluster of galaxies.