Can humans reach the speed of light? Can you travel in space at the speed of light?

Generally speaking, in theory, people can play the speed of light, but with the development of the current level of science and technologyWe will find that reaching the speed of light is still a long way away, which is why it is necessary to further work in science and technology to reach the speed of light, and it is indeed possible to travel in space when reaching the speed of light, which is due to the following reasons. <>

1. For us, it is also achievable to reach the speed of light, but it needs to be supported by future science and technology. In fact, for us, most of the time it is achievable to reach the speed of light, but we need science and technology as the support, because of this due to the limitations of modern science and technology, it is difficult to achieve the goal of human beings reaching the speed of light, so it is more necessary to continue to develop to further achieve. <>

2. Theoretically speaking, the technological level of human beings can indeed support human beings to reach the speed of light, but it still requires a long wait. In fact, for us, human civilization has only developed for tens of thousands of years, and for us, the developability and moldability of human beings can still be trusted, but human beings still need a long time to wait to reach the speed of light, and for the time being, they still need the development of science and technology as support. <>

3. Space navigation itself is not only an impact on speed, but also a need to rely on technology. In fact, for us, the space environment itself is complex and changeable, and for us, space is also full of unknown possibilities, so it is difficult to travel in space just by reaching the speed of light, although further technological development is still needed to lead us to space navigation.

In fact, for us, most of the time it is possible for human beings to reach the speed of light, but due to the limited level of human science and technology, it still takes a long time to say this.

No. Because according to the theory of relativity, time stands still after reaching the speed of light, so humans cannot reach the speed of light. Theoretically, humans can indeed sail in space after reaching the speed of light.

Human beings are not able to reach the speed of light at this stage, and after reaching the speed of light, they can go to the world outside the universe for new exploration, and if they do not reach the speed of light, they can also travel in spacecraft in the universe.

So far, human science and technology have not been able to achieve the role of reaching the speed of light, but with the continuous development of human science and technology, the future is completely promising, and when human beings reach the speed of light, they can sail in space.

With the current level of technology, it is true that human beings cannot reach the speed of light. And reaching the speed of light only has the basis for space travel, the astronomical distance unit is light years, the speed of light travels the distance in a year, even if the speed of light is not enough for humans to travel in space.

When can a person achieve flying at the speed of light without mass?

If you look at it from the point of view of classical physics, as long as you give a spacecraft a net force greater than zero all the time, its acceleration will be due to the fact that the mass of the spacecraft remains the same.

The size is evergreen at zero:

In this case, the speed of the vehicle will become faster and faster, and sooner or later it will exceed the speed of light, reaching a point much faster than the speed of light. However, the theory of relativity shows that the speed of light is the limit of speed, and the aircraft cannot be accelerated to the speed of light, only photons and gluons.

and so on, and so on, in order to reach the speed of light. The reason is that Newton's second law of motion.

The mass in is a variable and can only be considered a constant if the velocity is much lower than the speed of light:

In fact, the mass m increases dramatically as the velocity approaches the speed of light, and the resulting relativistic effect can no longer be ignored. The motion mass m is related to the static mass m0 as follows:

Based on this, the following formula for relativistic kinetic energy can be derived:

For an object with static mass such as an aircraft, once the speed is infinitely close to the speed of light, the mass of motion and kinetic energy will tend to infinity, so the aircraft cannot reach the speed of light without accelerating, let alone exceed the speed of light.

Considering the size of the universe, distant exoplanets are light-years away.

And extragalactic galaxies.

It's hundreds of thousands or even tens of billions of light-years away, so can't we travel at the speed of light?

Not really. Although local velocity is subject to special relativity.

is limited, but there are other very important corollaries of the theory of relativity - the shrinkage and the slow clocking effect.

For observers on Earth, flying to an extragalactic galaxy hundreds of thousands of light-years away, it would take hundreds of thousands of years for a spacecraft to arrive. However, for a vehicle with a speed close enough to the speed of light, it may take only a few years or even a few days to fly to an extragalactic galaxy, because the flight distance will be compressed to only a few light-years or even a few light-days, which is what the theory of relativity says that time and space are relative.

It's only a matter of time before a rocket in space accelerates to the speed of light and eventually exceeds it. However, according to the special theory of relativity, rockets cannot be accelerated faster than the speed of light, because this is in Newton.

The times are actually possible. If a spaceship.

It can accelerate continuously, and it can reach or even exceed the speed of light. But Newton's time has passed, and now it is Einstein.

He believed that if you continued to accelerate long enough in space, and kept increasing the speed, the spacecraft would one day reach the speed of light. The answer is simple. It's common sense.

It seems reasonable, but it's impossible. The point is. If it can continue to accelerate, the spacecraft can not only reach the speed of light, but also exceed it.

But if you think about physics, you can't accelerate all the time, and as you get closer to the speed of light, it gets harder and harder, you can only get close to the speed of light, but you can't. It is natural to think that a rocket can constantly accelerate in a vacuum, reaching and exceeding the speed of light as long as it remains constant. But with the advent of the special theory of relativity, the question of speed, why can't it be infinitely accelerated to the speed of light, or even 1% of the speed of light?

The Parker Solar Probe is naïve in our traditional view that the universe is a vacuum.

Is this really the case? The answer is no, there are not only planets in the universe or in space, but also other small celestial bodies, asteroids, comets.

Gas, dust, and asteroid belts, not to mention too much. The universe is a vacuum. Why can't a spaceship accelerate indefinitely, or even at 20% of the speed of light? In the observation and study of the universe for almost a century.

A series of data, ** and repeated experiments have shown that since there is no drag on the spacecraft, it is only a matter of time before the speed of light is exceeded, as long as the spacecraft is constantly powered. As long as the spacecraft carries enough fuel, depending on the difference, the answer is, of course, no, because the speed of light in most film and television productions, even faster than the speed of light, is completely different from the speed of light discussed above. Almost all of the spaceships in movies and TV series have space-warping devices.