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
There is no “fabric”. It’s just an analogy which is easier to visualize than the underlying mathematics, though spacetime does dip under mass (sometimes so steep that light can’t get back out), it seems to be stretched by “dark energy” and suitably large collisions can send out ripples.
Newton had a similar analogue for his description of gravity, in that objects attract each other based on their mass and distance. Newton didn’t actually believe that everything was connected by invisible force lines, but everything behaved *as if they were.*
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