The circle is our Universe or the perimeter of a constantly expanding energy impulse after the Big bang, on which our Earth, Moon, Sun, all stars and galaxies are located, in short, all the matter of space. All space objects located along this perimeter have the same time – the real present time. But the paradox is that space objects do not see each other in the present time in which they are located. One object begins to see another object only when the light from it reaches another object, and this takes time. As the signal goes from one object to another, the location of the source object changes, because the Universe is constantly expanding. The observer sees the space object in the same place and position as he was when he sent a signal to the observer.
The moon is very close to the present. It is only 1 second behind the present. But this is still not real. The moon is no longer in the place where it was a second ago. This is the past that was present a moment ago.
The sun, we see behind the present by 8 minutes. That is what we see was real 8 minutes ago. But it is also almost present
The closest star of Alpha Centauri we now see in the place where she was more than four years ago. And so on.
Information moves away from us at the speed of light only in the opposite direction and deeper into the past. Thus, if our Universe is a sphere in which the real present is around the perimeter, then information about all space objects in this sphere is provided to the observer late for a second every 300 thousand kilometers and forms an arc dating back to the Big Bang and nearly 14 billion years in time. The observer does not see the real Universe, but sees just this arc of past tense. The speed of light gives the observer information about the past of our Universe, about its development right up to its birth. Only the nearest space objects more or less coincide with their real location, but from a certain distance they are no longer cosmic objects, but phantoms that are not present in reality at the place where we see them, or maybe even no longer exist.
The deeper into space, the farther into the past. The distances to the stars can mark the epochs of the earth. Say you can find the stars from which the light comes to us from the era of ancient Rome. That is, imagine this star, we see what it was in the era of ancient Rome. And even further you can reach the era of dinosaurs. In general, we can outline the mental circles in space, corresponding to different Earth epochs until the appearance Earth itself and even the solar system. But these circles outlined by us mean that the Universe was smaller.
If we assume that with the help of more and more advanced telescopes, we can see the entire sphere of the energy impulse, that is, our Universe, then the most distant cosmic objects will be located on this sphere literally behind us. And the Big Bang will be located behind us, that is, the remains of the Big Bang after 14 billion years. But it is impossible to turn back. We will always see only the beginning of the process. Drawing circles, outlining the epoch, we thereby outline the perimeter of the Universe of that time.
The dashed line indicates what the earth observer sees in the sky. I called this visible part of the sky a space-time spiral. It demonstrates a decrease in the size of the Universe up to the Big Bang.
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