When Black holes are getting formed, in which direction in space they form? For example, I have read that formation of Black Holes is same as forming a hole on a rubber sheet by a spherical ball, so it gets formed in a direction of the weight of the ball, so similarly if a star is going to be a black hole, in which direction of space will if form?
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I tink your question is mostly answered by the answers to the question Universe being flat and why we can't see or access the space "behind" our universe plane?.
The rubber sheet analogy gives the impression that there is an extra dimension in which spacetime is curved. Curvature in an extra dimension is called extrinsic curvature. However in general relativity no such extra dimension exists and the curvature is intrinsic curvature. So there is no 5th dimension direction in which spacetime is pulled to make the black hole.
John Rennie
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