In his 1995 book Black Holes & Time Warps: Einstein’s Outrageous Legacy, Thorne describes how he mulled over the problem of creating and maintaining a wormhole so that some advanced civilization could use it for interplanetary travel, without it collapsing or killing them by some other means.13 In order for this to be achieved, Thorne postulated that it would first be necessary to connect two points in hyperspace, which is a theoretical concept advocating that our three dimensions of space are embedded in six dimensions of hyperspace.
