Time Travel
Introduction
There are many dates in history that would make the world a better place if they did not happen. This list includes assassinations of Presidents Lincoln and Kennedy, WWI, WWII and 9/11. In the modern world that we live in there is no way to change these events. But if there were a way you could actually do it, would it be possible? There are some theories about this. They are only theories because there is no way to test them at this point in time. One of these theories is that it would be impossible to change the past. If I were to go back in time and kill my great-grandpa before he had my grandpa then I would have never existed. If I never existed then I could not have gone back in time to kill my great- grandpa. This makes it impossible to change the history of the world in which we live. But this is only one of many theories about time travel. Another theory is that you could make a parallel universe. This parallel universe would be nearly identical but with some differences made by one change in the plot.
Time travel is the concept of moving between different points in time in a manner analogous to moving between different points in space. Time travel could hypothetically involve moving backward in time to a moment earlier than the starting point, or forward to the future of that point without the need for the traveller to experience the intervening period (at least not at the normal rate). Any technological device – whether fictional or hypothetical – that would be used to achieve time travel is commonly known as a time machine. Although time travel has been a common plot device in science fiction since the late 19th century, and the theories of special and general relativity suggest methods for forms of one-way travel into the future via time dilation, it is currently unknown whether the laws of physics would allow time travel into the past. Such backward time travel would have the potential to introduce paradoxes related to causality, and a
There are many dates in history that would make the world a better place if they did not happen. This list includes assassinations of Presidents Lincoln and Kennedy, WWI, WWII and 9/11. In the modern world that we live in there is no way to change these events. But if there were a way you could actually do it, would it be possible? There are some theories about this. They are only theories because there is no way to test them at this point in time. One of these theories is that it would be impossible to change the past. If I were to go back in time and kill my great-grandpa before he had my grandpa then I would have never existed. If I never existed then I could not have gone back in time to kill my great- grandpa. This makes it impossible to change the history of the world in which we live. But this is only one of many theories about time travel. Another theory is that you could make a parallel universe. This parallel universe would be nearly identical but with some differences made by one change in the plot.
Time travel is the concept of moving between different points in time in a manner analogous to moving between different points in space. Time travel could hypothetically involve moving backward in time to a moment earlier than the starting point, or forward to the future of that point without the need for the traveller to experience the intervening period (at least not at the normal rate). Any technological device – whether fictional or hypothetical – that would be used to achieve time travel is commonly known as a time machine. Although time travel has been a common plot device in science fiction since the late 19th century, and the theories of special and general relativity suggest methods for forms of one-way travel into the future via time dilation, it is currently unknown whether the laws of physics would allow time travel into the past. Such backward time travel would have the potential to introduce paradoxes related to causality, and a