As time is defined by the unfolding of events, there is only present time as past events are done deals and future events have yet to unfold.
Although we can remember past events, that's all they are...memories or records of them. We can't go back and alter them because they don't exist; the past does not exist.
Nor does the future.
Some say we can travel into the future by invoking a relativistic effect called time dilation. But they are misinterpreting what happens there. Instead of going into the future, a traveler is simply catching up with the present after lagging behind it relative to a designated static reference frame, like Earth.
Hawking in his "Into the Universe with Stephen Hawking" spends an hour on Discovery Channel as to why we cannot travel through time in either direction. Recommend you do VOD, find that episode, and play it on your TV. For one thing, he dispels the wormhole myth.
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No.
As time is defined by the unfolding of events, there is only present time as past events are done deals and future events have yet to unfold.
Although we can remember past events, that's all they are...memories or records of them. We can't go back and alter them because they don't exist; the past does not exist.
Nor does the future.
Some say we can travel into the future by invoking a relativistic effect called time dilation. But they are misinterpreting what happens there. Instead of going into the future, a traveler is simply catching up with the present after lagging behind it relative to a designated static reference frame, like Earth.
Hawking in his "Into the Universe with Stephen Hawking" spends an hour on Discovery Channel as to why we cannot travel through time in either direction. Recommend you do VOD, find that episode, and play it on your TV. For one thing, he dispels the wormhole myth.
We may never know.