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It is believed that our universe is curved like a U shape see figure 1-1 For a while it was only believed that you could travel back in time It was never thought that you could travel into the future Stephen Hawking had a theory that there are loops or shortcuts in the universe that could warp you from one part of space to another He called it a wormhole Wormholes are also unstable They can collapse at any time and pinch off into two separate singularities see figure 1-3A wormhole is a thin tube of space-time that can connect two flat regions that are far apart A wormhole is usually connected by two black holes It takes a short cut in time and can make a trip that is 20 million million miles only a few million miles It creates a little gateway in time like a time warp A person could travel back a million years and get in another wormhole and get back before he even left see figure 1-2There really isnt any way to find a wormhole and we have never have discovered one Wormholes are a theory by Stephen Hawking But to find a wormhole you would have to find the black hole it was connected to A black hole gives off X-rays So we would have to use a telescope that detects x-rays We are still searching for wormholes in space To travel through a wormhole you would need to travel at the speed of light We have not yet created a ship that can travel at that speedIf you travel back in time through a wormhole you would not be able to change the past In order to go back in time and change the past history would have to prove that you already arrived there and didnt do what you were going to do and you didnt alter the future This is the reason why we cannot
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