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"What would happen to Earth if the sun suddenly disappeared?"
This question is like a test of our physical knowledge, and it hides more worries about the sun.
As someone once said, "The earth will be fine as long as there are you when it leaves the sun."
Yes, in the face of various disasters, human beings will always not bow to fate, but continue to strive to move forward.
But more people are more curious about this question, wondering what would happen to the earth if the sun really disappeared suddenly, and whether it was possible to live?
1. The sun rises and does it, and it never sleeps at night.
Before the sun suddenly disappears, we may be able to describe the shortcomings of the sun first, otherwise the snow queen is always responsible, and one day it will really disappear suddenly.
First of all, when people always talk about the sun, they always mention summer, hot and "arrogant" adjectives, but the sun is really faceless, it will always burn here non-stop, during dusk, even at night, and it will make people unable to sleep, which is a violation of the people!
Therefore, it is not a bad thing for the earth to be separated from the sun.
But what happens when the Earth leaves the Sun?
First of all, we need to think about what impact it will have on the earth without the sun.
And what will change on Earth from the moment the sun suddenly disappears.
In fact, if the sun were to disappear for a moment, humans on Earth would not immediately feel the change of the sun's disappearance.
In this "short" period of a few minutes, the sun's light disappears little by little from the earth's viewpoint, because there is a limit to the speed of light, so when the sun is "extinguished", human eyes can no longer see the existence of that light.
But if there had been a cosmic observer, he would have seen it with his own eyes, and saw the sun's light suddenly disappear at the peak of its burning, just as a spark burns and is suddenly extinguished.
The sun's light is so obvious that you can even see it burning, but the light emitted by the sun's burning light does not reach the earth instantly!
This mass of sunlight travels through space at a speed of 300,000 kilometers per hour, like a seed that keeps the earth warm, spreading in the process of propagation, thus forming a huge ball of light.
This ball of light keeps moving in all directions, and then keeps getting smaller!
After eight minutes, the sun was burning, and the light it was emitting was no longer visible.
But in the middle of this time, there was still a little bit of light from the sun, and this light reached the earth at the last moment, just as the sky suddenly darkened.
2. Gravitational attraction.
Newton's theory of gravitational attraction states: "The earth revolves around the sun because the gravitational pull exerted by the sun on the earth keeps the earth in a stable orbit that does not rotate into the interior of the sun."
Of course, the Earth also exerts a gravitational pull on the Sun, but it is clear that the Sun has a larger mass than the Earth, so the gravitational pull it produces is also stronger than that produced by the Earth.
Therefore, from the perspective of the earth, what we feel is that the gravitational pull of the sun on the earth constantly exerts an outward force on the earth, so that the earth continues to fly farther away.
However, the "circumambulation" of the sun is not as simple as one might think, and this "circumambulation" refers to the final equilibrium state of equilibrium after the sun and the earth are opposed to each other.
In this state, the gravitational pull of the Sun on the Earth, and the gravitational pull of the Earth on the Sun, reach an intermediate force that neither leaves the Earth nor does it fall into.
The same goes for other planets.
We know that, in general, a moment is only created when the force is cut, and this moment changes the original state of the object, resulting in a state of "surrounding each other".
But we found that the trajectory of each planet around the sun is one circle after another, without any deformation, why is this so?
Here, we can look at it from another angle, if the sun has a very large mass, then the gravitational pull it produces is also very large.
Assuming that under the gravitational attraction generated by the sun, the earth is attracted to move in the direction of the sun, in order to better observe this trajectory, we might as well look at the trajectory map of the solar system.
On the diagram, we find that there is a straight line, so what is the direction of this straight line?
According to our previous deduction, this straight line should refer to the direction in which the sun is pointing, but in the solar system, the sun is not moving, so there is such a line, which starts from the center of the sun and extends outward.
What is the other line in the diagram?
According to Newton's law of gravitation, this line is a path to eternity, which means that as long as there is mass, any object will be attracted by the sun and thus move in the direction of the sun.
So in the solar system, there is a planet or a moon standing on every trajectory line, and they are all objects that can be observed by humans!
These objects actually came from far away space, and they wanted to fly to the sun, but after a circle around the sun under the sun's gravitational pull, they were thrown out by the sun!
However, as it happens, they don't have enough power, so they can only be constantly tossed around by the sun in their respective orbits.
3. Indulgence is gone.
Of course, there are one or two objects that are very massive in mass and volume, comparable to the mass of the sun, so at this time, they are not inferior to the sun.
This force is great when the sun has a gravitational pull on them, but they also have a great gravitational pull on the sun.
So that the sun is finally attracted to these objects and moves around them, just as the planets orbit the sun.
These objects are the planets we are familiar with, and of course the unspeakable stars beyond the solar system, the universe is a big and vast world, and mankind is still exploring it.
So, let's take a look at what would happen to the Earth if the sun suddenly disappeared.
Newton's theory is that the Earth will leave its orbit at a speed of 29.7 kilometers per second, and then continue to fly outward, but eventually, it will return to the orbit of the Sun.
Although these objects move in an orderly manner, from the perspective of the wider world, they are also in chaos!
Einstein's theory of general relativity states that the mass of the sun can distort the surrounding space-time, but objects that move with the sun are also affected by the sun's gravitational pull.
Although the moment the sun disappears, the time and space it twists will also disappear, but the earth that rotates with the sun will still be affected by the sun's gravitational pull and continue to move around the sun's "pit".
But if the gravitational pull of the sun suddenly decreases during this process, then the earth will suddenly be unconstrained by the sun and fly out in a straight line.
Eventually, due to the gravitational pull and collision of the surrounding stars, the Earth will eventually disappear into the universe.
If the sun disappears, the earth will go into darkness.
At this time, the earth is still in the position of daytime, but the sun suddenly disappears, and the light no longer spreads to the earth, so the earth will immediately fall into darkness.
This darkness does not happen overnight, but in a matter of hours, we will lose everything that can help us distinguish between day and night, and we will end up facing the darkness in a daze.
However, all life on Earth has not disappeared, and the energy inside the Earth will be the only hope for mankind!
epilogue
So, are there any places in these stars that can accommodate humans?
No one can answer this question, because the earth and the sun are gone, and it is impossible for humans to move on, they will wander in the dark night sky.