I asked one time on this forum about bending space. If I take a paperback book and understand it as space instead of matter, and then bend it, it seems that the bent space moves into other space and that there is space from which it came. Now the idea didn't make any sense to me. Someone clarified for me that in modern physics bending space is an "intrinsic bending" or "curvature". That made a lot of sense to me. However, does modern science use the Newtonian idea of external space? Or has that idea been left in to history? Thanks. The history of physics is very interesting for me.