Did you know that we actually travel through time every single day?

Have you ever wished you could time travel? To go back in time and fix something you did wrong or to see a historical event? Time travel has always been a popular theme in movies and books, but is it really possible?

Let's start with the basics. Over 100 years ago, Albert Einstein came up with a theory about how time works called the theory of relativity. According to this theory, space and time are linked together. Our universe also has a set speed limit - nothing can move faster than the speed of light, which is 186,000 miles per second.

But what does this have to do with time travel? Well, the theory of relativity also claims that the faster you move, the slower you experience time. Several experiments have proven this to be true. For example, if you have two clocks set to the exact same time, leave one clock at home, and take the other with you while traveling by plane, when you compare the time on the two clocks after the plane has finished its flight around the world, you will find the clock that traveled with you is a bit behind the clock that remained on the ground. This is because time moves relative to the observer and has no constant value.

This theory has practical applications too. GPS clocks are corrected because GPS satellites travel around our planet at tremendous speeds, around 8,700 miles per hour, and more than 12,000 miles above the surface of Earth. This speed slows GPS satellite clocks down, but the altitude speeds them up. As a result, the clocks on GPS satellites experience time at a rate that is slightly faster than one second per second. If this difference in time wasn't corrected, we wouldn't be able to use GPS to figure out our exact location.

So while we can't exactly travel back in time, we can observe the past using NASA's space telescopes. They help us see stars and galaxies that are so far away, it takes light from them ages to reach Earth. When we observe these distant worlds, we see what they looked like a long time ago.

But what if time travel was somehow possible? The time travel paradox is always a concern – what if you go back in time and accidentally prevent your parents from meeting each other? The problem is that Einstein's theory of general relativity theoretically allows a person to travel back in time and come in contact with their past self, which can potentially endanger their existence.

But some scientists at the University of Queensland recently claimed that this paradox might not actually exist. They say that even if you made some changes in the past, the timeline would self-correct anyway. In other words, it would still ensure that whatever event sent you back in time would still happen. Another study claims that even if some changes happened in the past, they wouldn't drastically alter the future.

Stephen Hawking said the best evidence we have that time travel is not possible and never will be is that we have not been invaded by hordes of tourists from the future. But what if these tourists come to our time, but they do it secretly? You may even have met one of them.

Meet Oren, a cyborg who claimed to have come to our time from 2050 to stop the coming end of the world in 2020. He appeared on a TV show where he said the whole world was inside the Matrix, then hit the headlines and gave an interview to a popular YouTube channel. As proof that he's a cyborg, he demonstrated his robotic voice, which can be made in a simple computer program. Oren became famous for his predictions about the near future, but it turned out that many experts had already announced these forecasts earlier.

Another traveler is Adam Archen, who claimed to have come from 2045. In an interview on YouTube, he shared some details about the future of the US, after which the video went viral and hit the headlines in many newspapers. Archen reported that the last official president of the country would be the daughter of Martin Luther King III and she would become the greatest US president in history. He also said that people would learn about the existence of extraterrestrial civilizations in 2028, and they wouldn't come from outer space. The lie detector didn't state that Archen was lying, but this doesn't mean he told the truth since the device can be deceived with the help of special training.

But what about actual time travel? Scientists say yes, time travel is real because we're now traveling in time. Time is moving forward, and we're moving with it. However, if we need to get into the future or go back to the past, everything is much more complicated. Time and space are linked together, and gravity can distort space and time. Gravity is one of the basic physical forces in our world, and it's incredibly powerful. It can literally influence the speed of time.

For example, if you're on a spacecraft moving at tremendous speed close to the speed of light, then time slows down for you. The perception of time becomes different for a person who's running and for one who's standing still. If you're near a heavy object, like a thousand times heavier than the sun, then the time next to this object also slows down thanks to its strong gravity.

But what about jumping into the future or the past like in movies? Wormholes come into play. They are tunnels that pass through space and time and can connect different time segments in different places in the universe. They are like cheat codes that can break the laws of the universe. Unfortunately, wormholes only exist in theory and sci-fi and have never been noticed in our universe by scientists.

So while time travel may not be possible in the way we think of it in movies and books, the concepts and theories behind it are fascinating and can help us better understand the universe we live in.