The picture you are seeing now is the image released by in 2019. It is about 55 million light-years away from our planet. The picture of the black hole . Hello everyone, today we will talk about going back to the past.
In 2019, human beings saw black holes for the first time
This may be an article that will make your mind more open. Will change your previous understanding of the universe. If it can be achieved, then we may be able to meet our deceased relatives.
Because of the phenomena I mentioned today, it is completely feasible in theory. It's just that maybe the current level of science and technology of human beings has not reached the achievable requirements.
In order to avoid friends who don’t know and save time to search for knowledge that they don’t know, simply give you a light-year science popularization. Strong1strong The so-called light year looks like a unit of time. In fact, it is not a unit of time, but a unit of distance. Refers to the distance traveled over a year at the speed of light.
One can imagine what a huge amount of data, and how big is the distance of 55 million light-years? Everyone fills up the picture for yourself. We all know that the speed of light travels with speed. When we humans use current technology to photograph a distant black hole. The black hole in this photo is already what it looked like more than 50 million years ago.
because it is too far away from the earth. As a result, it takes a long time for the entire picture to reach the earth at the speed of light. This black hole was announced by on April 10, 2019 by , and its mass reached solar mass 6.5 billion times stronger1strong .
If it is placed around the entire solar system, it will swallow all the planets in the solar system with its own mass advantage. The sun is no exception. After the news was released, there was speculation. If higher civilizations suitable for the black hole environment live on the black hole, will the earth they see is also the earth 55 million years ago?
Among them, not only involves the theory of the speed of light as we know it now, but more importantly is a hypothetical theory and philosophical thinking. In theory, almost everything we see every day is in the past tense, and no one can really see the fact that exists immediately.
You may find it strange that what we experience every day, eating and sleeping, going to the toilet, etc., are not all things that happen immediately? But all these things that are happening are in quoted present continuous tense.
Maybe you have overlooked a little problem. Everything we see, or what is happening, is transmitted to the brain through the eyes, and how can the eyes see the occurrence of these things?
Think about it, if in the dark night, without any light, we can't see anything.
And the eyes can collect the occurrence of things around, the most important condition is that there is light around, and the things you see can reflect light into your eyes.
is then passed to the brain, and the brain makes a judgment on the information after the brain analyzes and processes it. The most important part of this whole process is the transmission of light.
So since light is transmitting information, there must be a time difference in between. If faulty. From a theoretical analysis, we can think that what you see right now is not what is happening now.It may be something that happened before 10 minus 100 seconds.
We all know that everything we see is transmitted using light as a medium. It doesn't matter if the object is a light source that emits light by itself, or a substance that reflects other light sources. They are inseparable from light. The propagation speed of light is about 300,000 kilometers per second. The distance between the earth and the sun is about 150 million kilometers.
If you use the speed of light to calculate, the sun you see when you look up now is the sun 500 seconds ago. At 8:3 minutes, we can do many jobs. Let's compare the moon again. The distance between the moon and the earth is about 380,000 kilometers. At this time, if you use the speed of light to calculate, the moon you see when you look up at night is actually the moon one second ago.
Mars is about 55 million kilometers away from the earth. If you take a picture there, the appearance of the earth will be 183 seconds ago. At a distance of about 3 billion kilometers from the earth, if you take a picture of Neptune facing the earth, the earth shown in the picture will be the earth about two hours ago.
If you use the person you are communicating with as an example, what you see now may be the person who existed hundreds of millions of seconds ago. Because the distance between the two is too short, we can't feel the time difference in the distance at all. Einstein once proposed general relativity and special relativity. The most basic theory is the definition of the speed of light.
He believes that the speed of light is constant. In the universe, the speed of light is the fastest way of propagation, and no other matter can exceed the speed of light. If the speed of an object can be close to the speed of light, then its time will be at a standstill. In the entire universe,As small as ants crawling, as large as celestial bodies operating.
due to the action of light. All objects can be burned in the universe just like burning discs.
Just like the black hole we mentioned about 55 million light-years away, what we saw in 2019 is actually what it looked like 55 million years ago. This also means His history long ago was recorded in the universe, and that moment happened to be recorded on April 10, 2019.
2019
And the history of black holes recorded by mankind will always be transmitted infinitely in the universe at the speed of light. If the universe has no boundaries, it will remain in the universe forever and will not disappear.
The same is true if we observe the earth from a black hole 55 million light-years away. The earth that the black hole sees at this time is exactly the stage when dinosaurs have just become extinct and mammals are beginning to rise.
But with the current level of human technology, it is impossible to see the earth more than a light-year away. Therefore, the nascent level of technology limits human imagination.
In theory, every second of your own experience is engraved in a different place in the universe.
If you want to see you a second ago, you should go to a place 300,000 kilometers away from you, if you want to see you or your relatives ten years ago. You should go to a place that is 9.46 billion kilometers away to watch.
Of course, this kind of viewing does not really need to travel so far to take pictures or video. It is impossible to achieve this level at all with the current level of technology.
In the near future, perhaps humans can use virtual technology or a higher-dimensional space to find out.
because if Einstein said light is the fastest speed in the universe,So no matter how far we humans develop, it is impossible to reach the speed of light, and it is impossible to surpass the speed of light to reach the position of historical propagation in advance.
In a sense, every second we experience is like throwing a rock in the river. The ripples spread farther and farther from the middle circle after circle.
And for those of us who have passed away, everything that we have experienced throughout our lives has also been recorded in the universe, gradually getting farther and farther away from us. But due to the limitations of our technology, we will never see them again.
I believe that in the near future, those relatives who have given us warmth will reunite with us, but this wait may be far away.
I'll see you next time.
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