d throat connecting the two holes; this is what is called a wormhole. An object entering a black hole will shoot through the wormhole at the speed of light and exit though the white hole at another location in space. This means that this object will end up somewhere in the future relative to an observer outside of the black hole. Unfortunately, the object could end up at virtually any point on the piece of paper, without any means of returning. The only way for the object to return to its origin is by finding another black hole to take it back to its starting point. One serious problem associated with the idea of time travel to the past is commonly known as the "grandparent" paradox. Suppose you decide to travel back in time and kill your grandparents so they dont have children. What would happen to you? Would you simply vanish into thin air? If you did vanish, then no one would be there to kill your grandparents; therefore, your would be born again. Another problem that arises is if time travel is possible, then it should be existent in the future. So how come we havent been visited by travellers from the future? Some believe we mistake time travellers for U.F.O.s. Based on what we know, time travel is only possible into the future, since the past has already occurred. These are very difficult questions to answer.At this point, time travel remains a theory. The possibility of time travel is validated by physics despite constant skepticism on our part. It is coming closer to becoming an exciting reality with every passing day. We are all time travellers in some sense because of aging. We are all moving towards our future, according to decisions we make in the present and made in the past. As for today's world, time travel is only theoretical; literal time travelers are still science fiction. The creative ideas that arise from these theories and discoveries are endless. ...
