Is there a phenomenon of light in the universe?

Of course, there is light in the universe, because there are many other luminous stars in the universe, so they will also produce some light. Because many stars can emit light continuously, whether it is visible light.

Or ultraviolet light.

Light, infrared.

light, and even some cosmic rays.

These are all that can shine. Light is a very amazing scientific phenomenon, we swim in the ocean of photons every day, and light surrounds us all the time. Even in very dark nights, we are still shrouded in a lot of invisible light such as wireless light waves, infrared rays, etc., and even we ourselves emit some shimmering light.

The photon is the smallest unit of light, according to our traditional concept, this smallest unit of energy is independent of each other, they are born with no way to communicate with each other, so they do not know each other's existence, this is a law in the universe. So it's almost impossible for a photon to go upwards. But there are always exceptions, and even photons have some accidents.

Because a lot of romantic things happen because of accidents. <>

Recently, many physicists have seen a very rare scene, photons collide. This is a very important invention in the experiment, scientists.

Find a way to make lead atoms pass by at close to the speed of light, and at this time, an electromagnetic reaction occurs between the lead atoms, exchanging a large number of photons with each other. At this time, a very rare photon collision occurred, and although the probability of this amount of occurrence is very small, it was finally observed by scientists. <

This phenomenon is called a virtual photon, but the lifespan of a virtual photon is very short, maybe the moment you blink, the electron and positron.

It is annihilating each other, so this phenomenon is very difficult to see, but this does not mean that the light in the universe is also very difficult to see, because there are many luminous stars in the universe, so the light can also be seen in the universe, but the universe itself does not shine. Because the universe is essentially a carrier of a planet, it is those stars and some light matter that emit light, not the universe itself.

There are many light sources in the universe, and there are many galaxies that can emit light, so there is a phenomenon of light.

There must be a phenomenon of light, and there are many things in the universe that we don't know and need to spend a lot of time exploring.

Absolutely. Light can exist in any medium, so there is a phenomenon of light in the universe.

Yes, there is a phenomenon of light. The universe is very large, so I feel that there must be such a phenomenon.

Light can only travel short distances in the universe, not all the time.

In the process of propagating in the universe, light can be reflected, absorbed or dispersed, and when all the energy of light is converted into other forms of energy, light disappears.

Reflection of light. If it could go on forever, the universe should be full of light, and the universe should be transparent and very bright, because the universe has a large number of luminous stars. Actually, the universe is not like this.

Absorption and reflection of light.

When light is absorbed by cosmic celestial bodies or dust, it is converted into internal energy. After being reflected or scattered, it is eventually absorbed by celestial bodies or dust in the universe. If the absorption is slow, the propagation distance is long, and the dust is more, the absorption is fast, and the propagation distance is short.

Reflection of light. In addition, there are gravitational waves in the universe, and gravitational waves make it impossible for light rays to travel in a straight line, and it is difficult to escape the gravitational pull of celestial bodies or galaxies.

In conclusion, the distance that light travels is limited. It can't go on forever.

Be! As long as there is no energy loss, it will continue to propagate in the universe, but in fact, the loss of energy is impossible to ignore, and the obstruction of celestial bodies, interstellar dust, and black holes can weaken the energy of light. But if we extrapolate backwards and discover a blue supergiant 9.3 billion light-years away from Earth in 2018, and Taiyu Kuyang is just an ordinary star in the universe, then it is not an exaggeration to say that the light emitted by the sun travels 7 billion light-years.

Light can't travel forever, and sunlight can travel about 19 billion kilometers. The stars we see are not the light of the stars that spreads back into our eyes, but the stars that block our eyes, so we can see the stars. For example, during the day, the sunlight produced by the hunger of the mountains and rocks in the atmosphere blocks the stars, so the dates are big and the stars are not visible during the day.

OK. As long as there are no obstructions in the path of light, light can travel forever in the universe.

Eventually, this light will bend and bend again under the gravitational pull of the universe, and travel all the way through the universe.

In the physics study of junior high school, we can understand that the propagation speed of light is much higher than the propagation speed of sound, so the propagation time of light is also relatively long, so the light in the early universe can still be seen now, which is also for a certain reason, so I will introduce it to you next.

First of all, we must know that the light in the universe is free of any impurities, and at the same time, there is no one in the universe, and there are no other buildings, so the universe travels for a long time when it emits light, because there is no other material to block it at this time, so the light in the universe can be transmitted for tens of billions of years, which depends on the early planets of the universe to open up the void, and the combination of the fusion of the void between individuals. The second is that the light in the early universe is relatively pure and relatively clean, at this time, there is no influence of anything at the same time, there are not many planets around, the light at this time is very pure, and the irradiation is also very strong, and the time is also very long, so it can be seen until now, but the light seen now is relatively dim, because after all, after all, the color of the light will become lighter and the penetration will be weaker, and it has also experienced a lot of twists and turns, so it can be seen now.

It can be seen that there is no way to explain many things in life with science, so if you want to be interested in this light, you can use some of your own knowledge or some documents on the Internet, you must know that many researchers may spend 10 years or 20 years to be able to observe a little skin, so scientific researchers are also more hard.

Therefore, if you want to attack those who want to engage in scientific research, those who engage in scientific research must not only endure loneliness, but also consume a lot of energy and time.

The reason why the light in the early days of the universe can only be seen now is because the universe is vast, and even if the light travels fast, it will take a long time for us to be able to see it.

Because these lights have been present in the universe all along, without any material influences or any other influences, they can still be seen.

This is due to the propagation of light, because the energy of this light is very large, so it can travel for so long.

Because it takes time for this light to propagate, light from the early universe can still be seen today.

First of all, you must know that the universe is expanding, and the expansion speed is greater than the speed of light, and it has been accelerating without slowing down, that is to say, light can never reach the edge of the universe and can only continue to walk, you can also 1 say that there is no observable edge of the universe because nothing can be detected**, electromagnetic waves also travel at the speed of light, and light will extend infinitely, in fact, there is no accurate answer to such questions.

The universe has a lifespan. The universe originated from the singularity**, expanded, and expanded at an accelerated rate, and finally expanded into a uniform large space, where both space and time would disappear. Then the life of the universe ended.

Light, too, has a lifespan. The form of light also changes. If you think that the change in the form of the light is considered to be dead (or gone), then the light is gone.

Otherwise, light would always exist in the universe. Because the universe is not extinguished, the light is not extinguished. But as I said earlier, the universe does not always exist.

Before the birth of the universe, after the disappearance of the post-universe. The universe is in a quantum state, between existence and non-existence, dispensable, you can understand that there is a seat in the classroom, Xiao Ming can go and sit down, or choose not to do it, this seat is the quantum state. The universe is in this state both before and after homogeneity.

Everything is agnostic. Only when Xiao Ming sits down or leaves, everything can be determined, after the starting point, and before homogenization, this state is called the universe.

Summary. The reason why we can see the light from the depths of the universe is because of the superposition of brightness caused by the temporary nature of vision.

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The reason why we can see the light from the depths of the universe is because of the superposition of brightness caused by the temporary nature of vision.

All the stars or planets of the solar system that we can see are moving at different speeds, so that our vision is temporary, and what we see is not the light emitted by the star fixed in one position, but the width is the diameter of the star, and the length is the diameter of the star plus the distance that the star moves during the visual persistence.

Light is a kind of electromagnetic wave, any object will emit electromagnetic waves, but some can be recognized by our human eyes, some can not be recognized by the human eye, and what can be recognized is visible light.

Not all light can be seen with the naked eye, light is produced in the universe.

Light is energy, it's not that it emits light, it's that you can see it with your eyes.

Any matter will emit light, which is a manifestation of energy, and some light is invisible to the human eye.

There are a lot of words to say here, I'll give you a **! The Chinese translation reads it out.