What happens if the speed exceeds the speed of light? Is it possible to go back in time?

If we could go faster than the speed of light, would we really be able to go back in time?

I think there's going to be a space-time reversal, and then we'll be able to travel freely between planes.

I think it's possible to go back in time, because if the speed was faster than the speed of light, then we could have driven a spaceship through the past.

Step back in time. Because according to the theory of relativity, if the speed exceeds the speed of light, you will turn back time. Because faster-than-light allows you to go back in time, it is theoretically possible to go back in time.

It is theoretically possible to travel back in time, but so far there is no speed that can exceed the speed of light.

The problem of crossing is imagined by many people, including some professional scientists, such as the famous Albert Einstein, who put forward the condition of crossing, which must be to exceed the speed of light, and the speed of light is the fastest and constant speed of the universe, which can be understood as the speed of the universe transmitting information pictures, beyond which you can cross, but people will also be confused about whether it is possible to go back to the past by exceeding the speed of light? What does it take to exceed the speed of light? In fact, theoretically speaking, it is possible to go back to the past, but in practice it is likely not to be done, because it is impossible to change what has happened in the future, if you go beyond it, that is, the speed must exceed the speed of light, from the current point of view, only a black hole can do it, let's analyze it in detail.

First of all, even if we say that we have traveled back in time to the past, at this time, theoretically speaking, our speed has exceeded the speed of light, the speed of light is the speed at which the universe transmits information, we can go back to the past before this information happens, this is the theory can exist, that is, Einstein's theory of relativity, but there is also a big practical problem, we can't change the future, that is, what happens in the future, we can't change.

It's a very simple example, we know who our parents are, if we let them not be together, or even if both of them are single, then we wouldn't exist at all, let alone go back to the past, so this practical problem can't be solved, and it's not okay to go back to the past, unless it's possible to travel through the future.

And beyond the speed of light, this speed is very terrifying, so from the current idea, only black holes can be done, but the difficulty is too great, the danger factor is very large, and I don't dare to test at all, but this aspect has also been researched, we must also maintain a confidence, science is the primary productive force, scientific exploration is far beyond our cognition, maybe the right thing today, the back is not necessarily right.

Of course, it is impossible to go back in time. The condition that needs to be met is that the speed of light propagation needs to be exceeded and it can pass through any medium, and it will not be affected by other factors, and it will not be affected by atmospheric pressure.

There is such a possibility, but you can only see the image at that time, and you can't change it, and if you want to go beyond the beam, you need technology, which is very developed, to solve the problem of kinetic energy.

Because speed is relative, Einstein's theory of thought suggests this, light also has speed, and if the speed of something exceeds the speed of light, then it will not reach its destination earlier than light, which is what we call space-time. We live in only a small part of the universe. In fact, there are many spaces in the same place (in kind).

And the speed of light is the boundary of these spaces.

Therefore, it is possible to travel through time and space as long as the speed of light. - Data basis: Einstein's theory of relativity.

In today's society, science and technology are developing more and more rapidly. In the universe, the speed of light is very fast, and time passes and it does not come back, so even if you exceed the speed of light, you may not be able to go back. Nowadays, there are more and more themes of crossing, which may be more attractive to see if there is really the reality of crossing, but it is true that the universe is diverse.

Be! Because you can catch up with the light emitted by all objects yesterday and the day before yesterday, and see yesterday and the day before yesterday, or even longer.