Just a thought... Pick a spot/location on the surface of the Earth. Now, the Earth is rotating on its axis and also rotating around the Sun (and wobbling a bit too). The sun and our solar system is rotating around our galaxy and our glaxy is moving in the universe as a whole. Is there graphical software that could show the path that point on the Earth takes through all this movement? I.e. could you plot exactly where in the universe that particular spot on the Earth was for any date/time...? Bit like a giant spirograph... but without the cogged wheels :) Thinking about a sci-fi novel and wormholes/rips in spacetime etc. Thanks.