Astrophysicist Says He Knows How to Build a Time Machine!

a reply to: OrionHunterX

Time, as we currently understand it, is inextricably linked to space, thus space-time.

Since time is measured by the speed at which you move between two points of space, this is why gravity allows for "bending" of the rules of space-time. There is however, one rule due to this that can't be undone...

Entropy.

In the universe, everything is moving. The universe is expanding. Nothing, and I mean nothing, is completely stationary based on our laws of physics, and those laws keep every atom and molecule interconnected. Entropy is the fundamental part of this that makes time travel into the past (not the future) impossible.

See, think of our position in the milky way, and the position of the milky way in the universe. With the combined speed of the spin and orbit of the earth, the movement of the solar system, the movement of the milky way's spiral that we are in, and the movement of the entire galaxy, it is an unfathomable speed - several hundred thousand miles per hours. In order to travel back in time, you would have to shrink the expanding universe, reposition all of the stars and planets and galaxies, move everything back into it's original state and place of existence at that point in time, because it is all relative. You could however play tricks with the speed of light, because technically if you were moving at light speed or faster, time would slow down but not completely stop, and you would be able to see the light of events that occurred in the past, technically "looking" back in time but not actually being present there. This is why we can see stars from long ago, is because of the time it takes for light to travel, so moving faster would mean we could "see" those events relative to our perception of time before they "happen" here on earth but would only be looking into the past faster than we do now.

Entropy is the single biggest problem with physically traveling back into the past. It's possible that light that left the earth many eons ago could be viewed if traveling faster than that light, but you couldn't physically interact with it in its original state. If for example we detonated a nuclear bomb, the light from that might be seen eons from now by observers looking in our direction. If they could bend space, they would only be seeing them relative to their reference of time, ie - seeing them in real-time and not delayed.

Good luck Mr. Mallett, I applaud you!

~Namaste