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Is Time Travel ACTUALLY possible?

It´s not what you think.

By Ivan KisićPublished 3 months ago 3 min read

I'm sure we all have dreamed of traveling through time. Maybe you want to go back to the past and see how things were, or would you prefer to go into the future and see what happens? Time travel is a mainstay of science fiction, and people often imagine the benefits and risks of such an ability. But is time travel actually possible? To understand how we might go about traveling through time, we must first understand what time is. Classical physics saw time as something that exists everywhere in the universe, and it progresses at the same rate for everyone. This means that a cause always leads to an effect, never the other way around. Something that the universe relies upon is the problem with this understanding of time. Though it holds true in some circumstances, it doesn't work in all cases - this is why Einstein's theory of relativity is seen as one of the most important scientific breakthroughs ever. It explains the changing nature of time, and has consequences for objects moving at high speeds, as well as those held within gravitational fields on a human level. Some examples include black holes - which assert the greatest gravitational poles in the universe.They are so powerful that the light itself cannot escape, and they also slow down time to an extreme degree.

If poor Matthew McConaughey fell into a black hole while looking out at the rest of the universe, he could theoretically observe hundreds of black holes. Even if it were possible to escape from the black hole, there would have been that much time outside the universe. Life would become completely unrecognizable. Another cork in time occurs at the speed of light. As you go faster and faster, time slows down for you, and this continues until you reach the theoretical maximum speed at which something at that speed can reach the speed of light.

Time slows down so much that things seem to happen instantly. For example, a photon of light emitted from a star on the other side of the universe, even at its incredible speed, reaches us on Earth and is visible to our eyes as a twinkle in the sky. Imagine it takes millions of years. See Fulton Journeys are instantaneous, occurring and reaching us at the same moment as we travel at the speed of light. Time is neutral and does not turn back. So moving fast makes time seem slower compared to other things, but this is one way to move time forward. You may leave Earth and come back, and many years will pass without you getting much older.

The challenge of course is going back in time. If the speed of light is constant, does this mean that if you travel faster than light, would I work in reverse time? Many scientists believe so. There is a theoretical subatomic particle that can do this called a tachyon. These particles have never been observed, partly because if this theory is correct, you would never see them approaching you because this event would be happening in the future. The idea of cause and effect works in reverse for tachons. Some scientists believe that harnessing these particles could be the best way to learn how to travel in time. Another theory is that wormholes act as tunnels through space-time and can create a path between two places at any time.

Although the theory of relativity does admit the existence of wormholes, the energy levels required to form them are astronomical and can lead to the formation of black holes. Stephen Hawking believed that radiation feedback would act similarly to sound feedback, making the wormhole inherently unstable and unusable as a time machine for long periods of time. Other researchers have proposed several ways in which space-time can be used to enable time travel. Perhaps lasers could be used to create extreme levels, gravitational quantum physics could allow the formation of so-called quantum tunnels between universes, and perhaps string theory could create cosmic strings or It could help explain how black holes can penetrate wine and warp space-time in such a way.

The idea of time travel has long been of interest to researchers, it's something we've all had at least once, and advances in our understanding of the universe over the past century will make it a reality. For a long time it was completely impossible to think of it as completely impossible, and yet it is a skill that is far beyond our current capabilities. The laws of physics do not allow this and there is a good chance that in the future it will become fact rather than fiction.


About the Creator

Ivan Kisić

I am a writer who blends mystery and sci-fi, digging into the stuff you never knew you didn't know. With a pen as my compass, navigating uncharted territories, uncovering hidden truths and opening doors to new, unexplored worlds.

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