when einstein describes the movement of obects in space via one object “bending the fabric” of space, what is that fabric of space exactly?

Question

Like in this demonstration: https://youtu.be/MTY1Kje0yLg?si=tohjaO8JBmt7IpWo

The movement of two objects is explained using Einstein’s theory of objects in space bending the fabric of space to cause one object to move in relation to another.

My question is what makes up the “fabric of space” that is being bent? As in the example of the linked video, what in space makes up what that blue fabric represents?

In: 3

Answer 1

You should watch [this video](https://www.youtube.com/watch?v=wrwgIjBUYVc) because the one you linked is an analogy that explains gravity by using gravity (that funnel is shaped tha way because Earth’s gravity pulls the objects down).

To answer your question, there is no material in the “fabric” of spacetime, and what’s curved or deformed is the actual dimensions (x,y,z,t).