do you know?The dangers in the universe are not only black holes and neutron stars, but also the passing of stray celestial bodies is also terrible

The universe is very dangerous. This is not alarmist. The solar system can exist safely for billions of years just because of luck. If you don’t believe it, just look at how dinosaurs became extinct. Just an asteroid with a diameter of more than 10 kilometers 65 million years ago made the dinosaurs that had existed for 150 million years disappear. If it is a larger celestial body, the solar system cannot escape the fate of extinction.

If all kinds of celestial bodies in the universe operate in a regular and orderly manner, there will not be too many accidents. But we know that any rules will be broken, and following the rules is not the theme of the universe. The real theme of the universe is survival of the fittest and survival of the fittest. There are always special celestial bodies in every part of the universe. These cosmic celestial bodies have their own personalities, and they don’t like to be constrained. This is what we often call wandering celestial bodies. Is it strange to wander the earth? It is not surprising that there are too many planets in a state of wandering in the universe, and many of them are powerful. Such as wandering small black holes, neutron stars, and wandering stars. In addition, there are countless rogue comets, asteroids, and even planets have rogues.

The Moon was likely created billions of years ago by a rogue rocky planet that hit Earth and named the hypothetical planet Theia. We know that most cosmic objects are revolving around a gravitational source, some orbits are circular, some are elliptical, and those wandering celestial bodies are actually revolving around a certain particle, the difference is that their orbits are not A closed circle or ellipse, but a parabola. The most familiar wandering celestial bodies are comets. The eccentricity of the comet’s orbit around the sun is very high, and it is almost a long and narrow ellipse. However, some comets are too fast, and their orbits will be a parabola. That is to say, this kind of comet has a lifetime There will only be one chance to pass the perihelion. When it circles the sun, it will not turn back, and will go to the depths of the universe on a parabolic orbit, becoming a wandering comet.

Most of the wandering celestial bodies are the same. Although they are wandering, it does not mean that they have no orbits, but after they pass through the only center of mass, their orbits become an endless arc. The solar system is very lucky. The location of the solar system is located in the region of the Milky Way where the density of stars is relatively sparse, and it is already close to the edge of the Milky Way. This position also avoids being visited by a large number of wandering celestial bodies as much as possible. But compared to the volume of the universe, even if the probability is very low, it will be a high probability event. We have always thought that only wandering black holes and neutron stars would be a huge threat, because these two super celestial bodies have huge gravity, fast speed, and extremely destructive power. In fact, if only one red dwarf star passes through the solar system, even if it is far away, as long as there is a gravitational perturbation phenomenon, the solar system will also suffer from annihilation.

We know that since the sun was born, it has taken a group of younger brothers in the solar system to revolve around the center of mass of the Milky Way, and its orbit is relatively stable. Since humans were able to launch deep space probes in the last century, we have mastered gravitational slingshot technology proficiently. The gravitational slingshot technology is a technology in which a spacecraft borrows the gravity of a large-mass celestial body to accelerate, but don’t be fooled by the name. The gravitational slingshot is different from what we imagined. It does not mean that gravity can accelerate, but that it uses gravitational potential energy to approach planets , and then steal the orbital kinetic energy of the planet to achieve the purpose of acceleration. The accelerated spacecraft is actually equivalent to taking away part of the orbital kinetic energy of the planet, but due to the large difference in mass, the impact of the stolen kinetic energy on the planet is negligible. Since the gravitational slingshot can be used to accelerate and decelerate, the principle is the same. The decelerated spacecraft is equivalent to transferring part of its own kinetic energy to the planet.

The problem actually lies here. We have always believed that only when a massive celestial body enters the solar system can it affect us, or directly hit the sun to produce destructive power. However, due to the large gravitational range of the sun, when another massive celestial body passes through the solar system, even if it just passes by the edge, it will have a great impact on the sun. No matter which direction it passes through the solar system, it will either disturb the gravitational balance in the solar system, or steal the sun’s revolution kinetic energy, resulting in a slowdown of the sun’s revolution speed, or it may return some kinetic energy to the sun to speed up the sun’s revolution speed. No matter what kind of result it is, it may bring disaster to the solar system, especially we on earth are even more unlucky, we can only watch but cannot stop it.

Why is it said that the change of solar kinetic energy will be a catastrophe? Just imagine, the reason why the solar system maintains its current orbit and stable operating environment in the Milky Way is that the kinetic energy of the sun has remained stable. When the speed of the sun increases or decreases, the orbit of the solar system around the Milky Way will change, or it will be closer to Galactic center, or farther away from the galactic center. When there is a drastic change in the operating location, there is no telling what awaits us. At best, it’s just a slight change in the amount of cosmic radiation. At worst, we will be in the same orbit as other star systems, and the result will be that either we tail them or they tail us. In either case, the destruction of the solar system is only a matter of time, and there is no reason for it.

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