If you re in a lightspeed spaceship

unimaginable. Probably, "the lights at that time were faster-than-light lights".

Probably, "You are moving at the same speed as the light, so you turn on the light and you won't see the light because you are parallel to the light."

Probably, "light is a system with you".

But all I can say is, unimaginable.

At that time, time on the ship stopped, and there was no way to calculate the speed of the spaceship, because the speed of time stopped and the speed was meaningless.

But others saw that the light emitted by the spaceship was still the speed of light.

In any case, the light emitted by the lamp is still the speed of light relative to you, and it does not change in any way due to the change of the system, so you see that the light is still the speed of light.

If you don't believe me, go back and ask your teacher, I learned the theory of relativity very well!

As usual, the relative velocity of light and your spacecraft is still 3000000000 meters, because the velocity of light relative to any frame of reference is constant. Look at the theory of relativity.

Can't think of it! At that time, the lights should not have been able to shine forward!

Because I seem to have learned that light is also material!

It's made of photons!

I can't turn on the lights at that time!!

I can't see it even if I open it!

The lights at that time were faster-than-light lights!

You are moving at the same speed as the light, so you turn on the light and you will not see the light because you are parallel to the light1

Light is a system with you.

Many people know that the speed of light in a vacuum is the upper limit of the speed of motion of an object, and no object can be faster than light, but this conclusion also makes many people doubt this, if there is a high-tech spacecraft traveling in space, it can make itself fly with a constant acceleration through some very advanced means, so can it eventually exceed the speed of light?

The answer to this question is, of course, no, in any case, it is impossible for this ship to exceed the speed of light. Let's briefly explain this problem.

First of all, for the process of the spacecraft has been maintaining constant acceleration, we must have a monitoring means to confirm, and the most convincing is naturally the conclusion of the people inside the spacecraft, for example, a special instrument can be placed in the spacecraft, because when the spacecraft is in an accelerated state, there can be an artificial "gravity" field inside the spacecraft (this is very understandable, you can think about why many giant space stations in science fiction movies are designed to rotate mode), and the instrument can measure the "gravitational strength" , which is actually the acceleration of the spacecraft.

Secondly, the conclusion of whether the speed of light is exceeded is based on a reference frame, for example, an observer on Earth makes observations of a spacecraft, but it should be noted that the spacecraft itself cannot be used as a reference frame, because for the spacecraft itself, it has no speed to speak of. So this question is actually asking, when the spacecraft is flying with constant acceleration (the constant acceleration here is recognized by the spacecraft's insiders), what is the attitude of the observer on the earth towards the flight state of the spacecraft, and whether the spacecraft can exceed the speed of light in the eyes of the observer on the earth?

Finally, in order to solve this problem, we must use the special theory of relativity, in fact, there is a conclusion in the special theory of relativity that is precisely aimed at this problem, that is, the acceleration transformation formula, the constant acceleration measured by the spacecraft itself, in the view of the earth observer, this acceleration is not constant, but gradually decreases as the speed of the spacecraft continues to increase, that is, the closer the speed of the spacecraft is to the speed of light, then the acceleration measured by the earth observer is closer to zero, so the spacecraft in the view of the earth observer, It will never reach the speed of light.

The diameter of the Milky Way is 100,000 light-years. It would take 100 years to travel at 1,000 times the speed of light. This is something that even elementary school students can calculate.

But this question is very unrealistic. It can be said responsibly that no matter how advanced a civilization in the universe is, it will never reach a thousand times the speed of light. The latest theories suggest that the speed of light is by no means the fastest in the universe.

But to break through the speed of light is almost impossible for the civilized world living in the four-dimensional space. A thousand times the speed of light, let alone talk about it.

If we want to break through the speed of light, it is impossible to simply rely on increasing the speed in the world we live in, no matter how advanced this civilization is, even if this civilization can manipulate a tenfold, hundredfold, thousand... With the energy of the Milky Way, this is also impossible. And for humanity to reach the level of energy that controls the entire galaxy in which we live, it will need to develop for at least another ten billion years!

So, in order to break through the speed of light, it is necessary to enter five dimensions or more of space-time (if it exists). But for us humans in the three-dimensional world, it's definitely another world.

I calculated that 1000 times is about 100 years, and 2000 times the speed of light is about 50 years or so. But when the speed of light is added to this part, the basic spaceship will also cost. Therefore, the basic proposed superluminal speed will not exceed a hundred times.

And even a hundred times is remarkable, to the nearest Centauri only takes 2 weeks or less 2-3 days. Distances of more than 10 light-years or even thousands of light-years only take a few decades, and it is no problem for people to reach them in their lifetimes.

Even if it can reach a thousand times the speed of light, if you sit in this spaceship, your body will definitely be torn apart, so if aliens come to Earth from afar, their spaceship will definitely exceed the speed of light by a thousand times, and for civilizations that have been developing for tens of billions of years, maybe their spaceship speed can fly trillions of light-years in a day, so the aliens who can come to Earth basically won't be organisms, and no organic life can withstand them, and their bodies are very likely to be super advanced synthetic materials The soul can merge with this body in the same way that our soul and body work together in a way that we can't imagine.

Does the universe have boundaries? Actually, the question is not about speed, it's just whether the universe has edges, and if the universe is a space without boundaries, what about a little faster?

From the perspective of the basic theory of cosmic explosion, the universe is a relatively finite size of space, because from the basic theory of the crazy inflation, space time and chemical substances all come from the crazy inflation, even if this speed is fast, its size at a certain moment is fixed! For example, according to the Hubble parameter measured by the 2015 Ocean Disaster Communication Satellite as a calculation, our universe is about 100 million light-years away and expands beyond the speed of light, and at 46.5 billion light-years in the observable universe, it is more than 3 times the speed of light, so the universe is 93 billion light-years in size? In fact, this is what scientists have been trying to figure out!

The basic principle used to evaluate whether the universe is a closed sphere is relatively simple! But it's not very easy to actually operate, but the problem is not too big, and everyone is concerned that the result is not the whole process! The perspective we measure in the "closed" universe assumed by the basic theory is the same as the plan of the basic theory, or infinity!

This is likely to have two outcomes:

1. The universe is flat!

2. The scope of microwave heating radiation source as a detection environment is not wide enough, and it is impossible to mainly express the refractive index of the space of the universe!

Either one shows that the universe is unimaginably large!

2. How fast is a billion times the speed of light?

It is the speed of the warp engine in Star Trek, and it is also difficult to use it to surpass the observable universe, and it is a natural billion times the speed of light, whether it exists or not, if there is, it is undoubtedly very enjoyable, because from the earth to consider the edge of the observable universe, only a year can be, and the road of life may be able to catch up with the curtain in this life! It would take a lifetime to travel a billion times faster, and even if it were an observable universe, it would still be unimaginably large!

3. Can it pass through the edge of the universe?

It is very obvious that if you consider it from the perspective of the infinite universe, the universe is a hurdle that cannot be crossed in the past! The relatively limited speed against the infinite universe is as childish as trying to drink the surface of the Chinese Pacific! Of course, this is not important, but we just want to assume that if the universe is indeed only 93 billion light-years old, then I would like to ask what it will be when it passes through the edge of the universe.

As we have shown above, all space and chemicals and their time are all formed by the crazy rise of the universe, and a spaceship that can install a billion times the speed of light is also space, so in the chaos of no space, to put it bluntly, can this billion-fold spaceship still exist?

Naturally, this speed is also very important, a spaceship that can exceed the speed of light by a billion times is undoubtedly not an ordinary existence, can it tear off a loan opening at the edge of everyone's space, can it open up a space of its own in the chaos? Like the sub-universe? Naturally, this is all unreliable and brain-opening, but one thing can be said that if it does get into chaos, then the advantage of speed will no longer exist, because speed must be considered in space, since there is no space in the area where there is no speed?

Possibly. According to some inferences, the universe still has a certain boundary, and this speed is relatively fast, and it can fly over.

Definitely, and I feel that science and technology are becoming more and more developed now, if it can be verified one day. That must reach the boundaries of the universe.

There is this possibility, but it is also possible that it will not, because the universe is very large, and the universe has existed for many years, until now no one knows that the edge of the universe is **.

The universe is really hard for us to imagine, in fact, this is a lot of confusion brought to us by the level, our scope of existence is on the earth, always think of the distant place, this is the cross-border or out of bounds, just because we and the galaxy are two levels, we can't use our concepts and thinking on the earth to imagine how the matter and celestial bodies in this level develop and move. First of all, we must know that this is a cyclic system, and galaxies are just a celestial structure in the process of continuous replication, and each galaxy is a process from condensation to decomposition to complete the transformation process of this part of the matter. In space, every substance is developed, and it is through the horizontal development process of each level that brings about the development process of the structure, it is the development of the structure that brings about the development of the material in the structure, and the development of the material in the structure brings about the vertical development of the material in the structure, and the horizontal development process from the substance to the structure and a hierarchical circulation system are formed in the material in the structure.

We can't know how many levels there are outside of us, but each level has each level of basic matter, and each level has the development process of each level of matter and structure, although the levels are different, the materials are different, and the structure is different, each level is from the condensation of matter, the reproduction of matter to form the development stage of matter, and the development process of matter from condensation, replication to decomposition to form a structure. In the process of vertical development of the level, although each level is developed by the material within the structure, the material is embodied in each structure through the cohesion in the horizontal development process of each level, the larger the structure, the smaller the structure of the matter, and the structure of the material may be the largest when it develops to us, and it can be seen from this point that the vertical development of the level is also limited. We have also seen that although the vertical development of the hierarchy is developing a structure that is getting smaller and smaller, only in this way can we move from the instinct of matter to the intelligence of the structure, and from microorganisms to intelligent organisms and today's us within our level.

Today's human beings have too little understanding of matter, especially in space, each celestial body is actually a substance or a class of matter, just like galaxies are a class of matter, from condensation to decomposition is only a link in the transformation of matter in a circular system. A cyclic system is composed of the development and circulation of matter from condensation to decomposition and from decomposition to condensation of various celestial bodies, the development process of each structure, and the development process of matter in each celestial structure.

In the time controlled by human beings, there is no concept of time lapse, immortality, never die, and now our scientific knowledge is only the frog at the bottom of the well, the floor, the square and the earth, the geocentric theory, the heliocentric theory, just like the flight dream of human beings hundreds of years ago. Walk across the single-plank bridge and use the science of our global village to define the science of the universe.

Because the area traveled by the spacecraft is limited, and the orbit traveled is also calculated, it is impossible to explore the entire universe.

Since the universe has no inside and outside, the speed of light is actually no different from the speed of walking.

Because the universe is very large, even with the speed of light, there is no way to truly understand the whole universe and understand everything.

Because the universe is a very large distance, it is calculated in light years, and the lifespan of human beings is not enough to support flying to the boundary of the universe.