Have you ever dreamed of traveling through time? Science shows that it is possible

Have you ever dreamed of traveling through time, like the characters in science fiction movies?

For centuries, the concept of time travel has captivated people's imaginations.

Time travel is the concept of moving between different points in time, just as you move between different places.

In the movies, you may have seen characters using special cars, magical devices or even jumping into a futuristic machine to travel back or forward in time.

But is this just an idea for movies, or could it really happen?

The question of whether time is reversible remains one of the greatest unsolved questions in science.

If the universe follows the laws of thermodynamics, it may not be possible.

The second law of thermodynamics states that things in the universe can either stay the same or become more disordered over time.

It's a bit like saying you can't put eggs back the way they were once they've been cooked.

According to this law, the universe can never return exactly as it was before.

Time can only move forward, like a one-way street.

Time is relative

However, physicist Albert Einstein's theory of relativity suggests that time passes at different rates for different people.

Someone speeding along in a spaceship traveling at close to the speed of light – 671 million miles per hour – will experience time more slowly than a person on Earth.

Humans have yet to build spacecraft that can travel nearly as fast as light, but astronauts visiting the International Space Station zip around Earth at speeds close to 28,163 miles per hour.

Astronaut Scott Kelly has spent 520 days on the International Space Station and as a result has aged a little slower than his twin brother Mark Kelly.

Scott was once 6 minutes shorter than his twin brother, writes yahoonews, the Telegraph reports.

Now, because he was traveling much faster than Mark and for so many days, he is 6 minutes and 5 milliseconds younger.

It is known that some scientists are exploring other ideas that could theoretically allow time travel.

One concept involves wormholes, or hypothetical tunnels in space that could create shortcuts for travel across the universe.

If someone could build a wormhole and then find a way to travel at the speed of light – like the spaceship mentioned above – it would age more slowly.

However, wormholes remain theoretical: scientists have yet to find one.

Paradox

There are also paradoxes associated with time travel.

The "grandfather paradox" is a hypothetical problem that could arise if someone traveled back in time and accidentally prevented the grandparents from meeting.

This would create a paradox where you were never born, which begs the question: how could you have traveled back in time in the first place?

It's an amazing puzzle that adds to the mystery of time travel.

Physicist Stephen Hawking tested the possibility of time travel by hosting a dinner where invitations marking the date, time and coordinates were not sent until the dinner was over.

His hope was that the invitation would be read by someone living in the future who had the ability to travel back in time.

But no one appeared.

As he pointed out: "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."

Telescopes are time machines

Interestingly, astrophysicists armed with powerful telescopes possess a unique form of time travel.

As they gaze into the vast expanse of the cosmos, they glimpse the past universe.

Light from all galaxies and stars takes time to travel, and these beams of light carry information from the distant past.

When astrophysicists observe a star or a galaxy through a telescope, they are not seeing it as it is now, but as it existed when light began its journey to Earth millions to billions of years ago.

NASA's newest space telescope, the James Webb, is reportedly looking at galaxies that formed at the start of the Big Bang, about 13.7 billion years ago.

While we're unlikely to have time machines like the ones in the movies anytime soon, scientists are actively researching and exploring new ideas.

But for now, we'll have to enjoy the idea of ​​time travel in books, movies, and dreams. /Telegraph/