Can t the universe expand faster than the speed of light? That means the radius of the universe is 4

Hundreds of millions of years have passed since the universe was large, in other words, the universe has been 100 million years old. But on the other hand, the universe is still expanding, and it is expanding faster than the speed of light. Scientists say that the expansion rate of the universe should not be measured in light years, because it is already expanding much faster than the speed of light.

According to the latest research results, the observable radius of the universe is about 460-47 billion light-years. The expansion rate of the universe during the "inflation" period is much faster than the speed of light, and it is generally believed that "the expansion of the universe expanded to the 78th power in only 10 -34 seconds".

Wrong. At least on the surface, the universe is expanding faster than the speed of light at one stage.

The speed of light is the highest speed at which matter moves in the universe, and no matter can move faster than the speed of light. According to the theory of the universe, the universe was born about 13.7 billion years ago, and since then, the universe has been expanding.

If the universe expands at the speed of light, then the radius of the universe would be 13.7 billion light-years, but after the calculations of scientists, the current radius of the universe is 46 billion light-years, far more than 13.7 billion light-years, indicating that at least on the surface, the universe is expanding faster than the speed of light. What's going on?

In the late last century, some scientists proposed that in the early days of the universe, the universe had a period of accelerated expansion, called the "inflation period" of the universe. During the "inflationary period", the universe expands at a very large rate of growth. The inflationary process occurs between 10 and 36 seconds after the universe is large, and the universe expands in a ratio of more than e 60 (10 26).

After the inflation ended, the universe continued to expand, but at a much smaller rate. At the same time, during the inflationary phase, the rate of expansion is not limited by the speed of light because no matter exists yet.

At the end of the inflationary period, particles of matter are produced, and the rate of expansion of the universe is limited by the speed of light, returning to the speed of light.

As a result, the current radius of the universe is not 13.7 billion light-years, but 46 billion light-years.

If we look at a galaxy with a maximum distance of 100 million light-years, it means that the galaxy is now 46.5 billion light-years away from us. This is because the light we receive from a galaxy is the first light it emits when it was formed. Based on the rate of expansion of the universe, the current cosmic Hubble coefficient is about 70 kilometers per second million seconds.

According to calculations, this speed is more than twice the speed of light. If the universe expands at the same rate, the Milky Way would be about 46.5 billion light-years. In particular, it is pointed out here that the expansion of the universe is the expansion of space-time itself, not the operation of matter, so it is not limited by the speed of light.

Galaxies are like raisins in bread.

As bread grows, like time and space, raisins separate from each other. The simple problem is that the farthest starlight we can observe now comes from 13 billion light-years away. This actually describes the current size of the universe.

The distance of a star is calculated by the Hubble constant, and the expansion rate of the universe is actually the speed at which the star moves away from us (retrograde velocity). This is calculated from the Doppler shift effect. Stars at different distances have different retrograde velocities, which represent the rate at which the universe expands at different times.

Therefore, the age of 100 million is a combination of these two factors. As for the deflection of light through massive celestial bodies, it is actually a gravitational lensing effect. This effect can also be used to measure the distance of light emitted to Earth by distant galaxies along different paths, and to calculate the distance by calculating the propagation time and velocity of the different paths.

It has a radius of 46.5 billion light-years and a diameter of 93 billion light-years. As a result, instead of observing stars 46.5 billion light-years away, scientists theoretically expanded the observable radius of the universe to 46.5 billion light-years.

The observable diameter of the universe is not observable, but theoretical data obtained by the scientific community based on various scientific methods. In fact, the farthest galaxy, GN-Z11, is about 13.4 billion light-years away, and the farthest star is about 9 billion light-years away. According to the propagation characteristics of light, the speed of light is constant, and the observation is the same in any coordinate system.

So this galaxy was formed 13.4 billion years ago, and no matter how fast it is away from us, we will receive this light in 13.4 billion years. If a galaxy expands rapidly away from us, its spectrum will have a redshift effect. Based on the redshift value, the retrograde velocity can be calculated.

With this method, three data will be obtained, namely the light travel time, the backtracking time, and the distance traveled in the same direction.

I think the argument is unscientific, because scientists simply don't do anything like that. And I don't believe in the fact that time can be expanded.

I think this is a scientific statement, because the universe is indeed expanding, and this has been confirmed by years of research.

It is unscientific, there is no way to verify such a claim, and it is just a speculation, without any evidence to prove it.

The various ways that humans can think of to go beyond the speed of light have all become imaginary and cannot be done by themselves, but to seek help from nature. The main challenge to the speed of light is the basic theory of the expansion of the universe. In 1929, Edwin Hubble discovered that planets that were getting farther and farther apart were avoiding the Earth at a faster rate, an objective observation that showed that the universe was constantly expanding.

At the same time, Hubble confirmed that the rate at which planets avoid Earth is positively correlated with the distance between them, for example, the rate at which a planet 2 billion light-years away from Earth avoids Earth is twice as fast as a planet that is 1 billion light-years away from Earth.

This warns us of the objective fact that there must be a zero point, beyond which the planet is avoiding the Earth at the speed of light. On the surface, this is no problem at all, but the fact is that the planet itself is not traveling faster than the speed of light, but the interior space itself is already moving faster than the speed of light, which does not contradict the prohibition of quantum theory, which only allows matter in space to move faster than the speed of light. Of course, then again, the indoor space itself is surging at the speed of light, which is indeed a faster-than-light condition, so we cannot deny that the faster-than-light condition exists, only for a certain chemical substance or information content, or the light itself, and it is difficult to exceed the speed of light compared to the speed of the space to which it belongs.

Look at the next idea of the speed of light again. On Earth, the more powerful the car, the faster the speed, so in order to achieve higher speed, we need to increase the kinetic energy as much as possible. Where in the universe is there a surprising amount of kinetic energy?

The super-black hole jet is a good option. In the direction of the constellation Virgo, 2.5 billion light-years away from Earth, there is a quasar, numbered 3c 273, which emits very intense radio waves and constantly spews out various chemicals such as electronic devices. Observation found that the jet speed of the quasar 3c 273 actually reached more than 8 times the speed of light, in addition to 3c 273, scientists have also observed the same faster-than-light condition on other quasars, which is indeed a miracle of divine laughter.

But unfortunately, this kind of faster-than-light speed is actually an illusion. Now that we look at the manuscript that can no longer be scribbled, the jet travels from point A to point B in 10 years, and the distance is 800 million light years, so the specific speed of the jet is times the speed of light.

According to the Pythagorean law, we know that the first point b of the jet is about 700 million light-years closer to the earth in 10 years, so the light emitted by point A at the front of the jet 10 years ago, and the light emitted by point B at the end of the jet now, the time it takes to reach the earth is actually only 300 million light-years apart, which leads to the phenomenon we see that the jet traveled 400 million light-years in 3 years. Its efficiency is 1 3 faster than the speed of light. So it's an illusion of visual illusion, where, the jet is still twice the speed of light.

Yes. Because the radiation in the universe is mainly ** the planets, and the planets are spreading at the speed of light, the radiation in the universe is also expanding at the speed of light.

No, cosmic radiation is everywhere, and the beneficial and the harmful are all in their own way. The radiation excitogen type spreads through the media, and its velocity does not change. However, there is also no possibility of expansion.

Yes, it does, and the radiation slowly decreases with density.

Sorry, that's not the size of the universe, it's just the size of the observable universe, and it's the observable cosmic aperture calculated from the skyrocketing of space in the universe with hundreds of millions of light years, and the stars I've really observed are 13.4 billion light years away gn-z11 (visible light band), 100 million light years (radio wavelength), although we see GN-Z11 13.4 billion light years away from the visible light band, but in fact, this light source is 13.4 billion light years away. And the universe is here, and the world has not stopped surging for a moment!

Suppose this is also the size of the universe, and there is only one universe, so what is out there? To ** this topic, we first have to understand the concept of the universe, the universe is the general name of all material energy and its space and time, according to the basic theory of contemporary astronomy, our universe originated from a 100 million light years ago a crazy rise, which from the cosmic microwave background radiation source and its cosmic expansion and other observations to obtain some confirmation, in the absence of a more suitable basic theory to replace it, we believe it for the time being!

One of the key definitions is that indoor space is the skyrocketing of cosmic space, what is space? For the three-dimensional space we know, that is the size, naturally there is only indoor space is not enough, and it has to be long, otherwise the three-dimensional space is like a snapshot update, which can be found but cannot be applied, so the indoor space time is the overall framework of the universe that we must have! In fact, there are two key definitions of the inside and the "outside" of the universe, which can be approximately** settled!

The observer is at the junction of the past and the future, but for the crazy rise of the universe, the edge is the position of the observer, so that in front of it, is the void of time? Since they have not yet been produced, and according to the concept of crazy growth, the indoor space does not exist, and it is chaotic to describe it in Chinese, and the vernacular is a "region" with nothing, why put quotation marks? Since it can't be described as "regional"!

Could we theoretically be able to get to this place? Probably not, as long as we can only wander around the area where space and time exist at the same time, but at the edge of the indoor space, we can't find it at all, because the natural refractive index of the indoor space will turn to another perspective, and this happens completely without our knowledge, maybe the understanding of the indoor space is not in place, it is very likely that in the near future, after understanding the secret of space, we may be able to find a way to pierce through the chaos!

Is space really only 93 billion light-years away? This is also a secret that scientists have always figured out, but as a well, we do not have a horizontal view of the true size of the universe, but the researchers of the wizard use the way of projecting triangles to verify whether the universe is closed and relatively finite, or open to infinite size, or infinite size with curved spatial layout! Perhaps a junior high school graduate can understand the three definitions in the diagram, the projection angle of a curved triangle will be higher than the specific perspective, the triangle projection angle on the bend surface will be lower than the specific perspective, and the angle of view in the plane is equal!

Outside the universe, it can still be called the universe, and it is also possible that virtual particles are derived from the energy of the universe.

There may be spaces in other dimensions, and there may be other universes. There is no way to observe it at this time, after all, the universe we can detect is only 93 billion light-years.

It is very likely that it is another universe, and at present, due to the limitations of science, we have no way to judge or observe.