Light is a universal substance in the universe, it is everywhere, filling every corner of the universe, we are not dealing with light all the time, without light our eyes will completely lose their function, even if your eyes have 2.0 vision, it is no different from "blind".
Light is still the most incomprehensible matter in the universe, there is no one, only has wave-particle duality, not to mention, the speed of vacuum light is still an invariant constant, spreading 299792.458 kilometers per second, no matter who the reference is, unchanged fast and unchanged slow, which is difficult to understand.
The speed of vacuum light is incomprehensible
The speed of vacuum light is an invariant constant, it is really difficult to understand, the vast universe has countless stars, the Milky Way of Light has hundreds of billions, the closest super galaxy to the Milky Way andromeda galaxy is more, more than trillions, the entire universe is illuminated by countless stars.
All the celestial bodies in the universe are moving, the celestial bodies that seem to be stationary are actually relatively stationary, if you change a reference object, you can immediately show that it is constantly moving, the sun is the center of our solar system, it seems to be stationary, but with the Milky Way as a reference, the sun is running at a speed of 400 kilometers per second.
All stars are moving, some stars are approaching the solar system, some stars are far away from the solar system, according to our understanding, the star light is fast and slow, the star is far away from the earth, then the light that travels to the earth should be slower, the star flies fast to the earth, and its light should be relatively fast.
But in fact, no matter which direction the star moves, no matter who the reference object is, the speed of light is an invariant constant, 299792.458 kilometers per second, thunder does not move, no matter where you are, no matter how fast you are, the relative speed of light and the absolute speed of light are constant, which is like magic.
This is indeed incomprehensible, even if Einstein's coffin board is uncovered, his old man can not answer the question of "why the vacuum speed of light is constant", it is really too strange, subverting traditional physics, subverting people's three views.
Time is actually asymmetrical
The speed of vacuum light is an invariant constant that proves the asymmetry of time, for example, a target point 1 in space emits a laser beam to target point 2 3 million kilometers away, calculated according to the speed of light 300,000 kilometers per second, we generally think that it takes 10 seconds for the laser to reach target point 2.
At this time, if there is a spacecraft flying from target point 1 to target point 2, and the flight speed is 150,000 kilometers per second, according to the principle of invariance of the speed of light, the laser seen by the people on the spaceship is also 300,000 kilometers per second to fly towards target point 2, and the spacecraft has flown for 6.66 seconds, and the laser has reached target point 2.
Those who have studied mathematics should know that using the spacecraft as a reference, this laser reaches target point 2 in 6.66 seconds, but with the target point 1 position as a reference, this laser reaches target point 2 in 10 seconds.
The problem is, the same laser, it is impossible to arrive once in 6.66 seconds, and then once after 10 seconds, the laser will only reach the target point 2 once, it is impossible to do it twice, what is the problem? The only explanation is that the time on board the spacecraft is 6.66 seconds equivalent to the time at the target point 1 position of 10 seconds.
The speed of vacuum light is another incomprehensible fact that the speed of light in the vacuum is derived, that the time of the universe is not equal, that is, what scientists call "time is actually asymmetrical", and that a year on Earth, relative to a corner of the universe, may be ten thousand years, or it may be a short hour.
So too abstract, too illusory, we take the real example, the atomic clock experiment on the aircraft has confirmed the asymmetry between air time and ground time, that is to say, the earth ground time and space station time asymmetry, that is, astronaut time and our time asymmetry, but the difference is very small, we can completely ignore.
The inequality of cosmic time adds an explanation for the fact that the material of the universe is spreading far faster than the speed of light, and it may not be that the material is really spreading faster than the speed of light, but that the time of the universe is not equal, because we always calculate the speed of the movement of the matter of the entire universe on earth, perhaps this is a mistake in itself.
Astronomers have observed 19 times faster than the speed of light
In the distant constellation Virgo, 3C 279 belongs to the optically strong variable quasar, and in 2020, astronomers published observations of 3C 279 quasars for 50 years: 3C 279 quasars have appeared "faster than the speed of light", two radio sources at a speed of 5.7 million kilometers per second separating radio waves, 19 times the speed of vacuum light.
Is it really faster than the speed of light? In fact, this is just an illusion, and astronomers have concluded after a long period of research that this is just a visual faster-than-light phenomenon, not really faster-than-light.
Scientists have imagined countless times the scene of the speed of light being exceeded, and even associated with a hundred times faster than the speed of light and a thousand times faster than the speed of light, but as of now, the speed of light is still the fastest speed in the universe, can not be surpassed, even if the observation of the phenomenon of faster than the speed of light, either visual illusion, or time asymmetry caused. Interesting and informative scientific content, please pay attention to the only WeChat public account: Interesting Exploration