If you’re a big fan of sci-fi movies, you’ll probably have developed the desire to travel through time at some point. I mean, it’s a pretty big theme in the genre.
But of course, we are traveling through time every single day. Even you, whose reading this to pass the time at work or while you wait for that friend who is always late.
Moving forward in time is a very basic level of time travel, opposed to traveling backward which is still confined to the realms of your favorite Hollywood films. But, that doesn’t stop us from questioning: will it ever be possible to move backward through time?
The thing is, currently we are only moving in one direction. However, turning everything in reverse could be possible under one condition:
If some sort of mechanism, such as a time machine, was developed allowing us to physically transmit matter from the present into the past, time travel would be made possible. Groundbreaking news, right? But, wait! Before you go, listen to this…
In order to travel through time, we would have to go faster than the speed of light, and scientists are still not sure if that is possible.
Although it may seem natural that time would only move forward, scientists remain fascinated by the fact that time only moves in one direction. Is it, in theory, only ever possible for time to move forward? Possibly.
But, since there are practically no ways of verifying whether time is continuous or quantized, it is likely that this will remain a mystery for a while, maybe forever. There are still so many questions about time which remain unanswered, but there are many experts keen to crack the code to time travel. What they’re discovering will make Marty McFly look like an amateur…
When theories are first formulated, scientists tend to work on them and develop them further using the evidence available. There was a time when the Big Bang Theory was a mere suggestion, an idea formulated within the study of general relativity.
And then it became a legitimate theory. Some scientists believe this could be the case for the topic of time travel. While it is highly improbable that time travel will ever be a feasible option for people in the future, there are some special circumstances and conditions which could allow for it to be developed.
If we find some way to cheat physics by traveling faster than the speed of light, then time travel could be a distinct possibility. There could be a way to connect two completely different points in space and time under this condition.
The difficult thing is, in order for this to be made possible we would require certain conditions from the universe, conditions that have never been known to be possible.
Unfortunately, quantum mechanics and all its principles have essentially prevented our time traveling dreams from becoming a reality. And that’s because relativity and quantum physics don’t exactly go hand in hand meaning it is probably impossible to build a quantum time machine.
On the other hand, researchers in the field of quantum physics have discovered some nuclei which appear to go against the accepted laws of fundamental physics.
According to these laws, particle physics should remain symmetric even when a transformation occurs. However, the nuclei do not look the same when they are turned upside down or if the matter is exchanged for antimatter. In English, that essentially indicates that time is not necessarily symmetric.
Ultimately, we cannot prove that time travel is impossible, because there is absolutely no convincing evidence to support it. Frustratingly, we still know too little about time to be able to figure out how it works in its entirety. So, for now, fellow time-traveling fanatics, it’s probably best to just stick to watching Back To The Future.
But if you are still hopeful, check out these very thought-provoking theories that argue that time travel is a very real possibility: