text: if time travel was possible, wouldnt we have people from the past and future popping up everywhere? or would we exist at different energy levels? how's this for a proposal.  maybe time travel is possible, but when you travel back or forward in time, the earth doesn't travel with you. therefore, you will remain at the same place but the earth will move in its orbit away from you at 30 km/s, or won't have arrived there yet. the sun would not be in the same place either, it would have moved in its orbit around the centre of the galaxy at about 240 km/s, etc.   unless we have a way of taking into account the very real movement of the earth and sun through space, even a displacement of a few minutes would put us out in space, or well beneath the earth's surface.  still think it is possible to travel in time?