Can humans avoid a comet hitting the Earth?

The solar system is in the outermost part of the Milky Way, and it is this impact probability that originated from life, if there really is, as long as it is discovered early, I think people must have a way to solve it, such as a nuclear bomb, as long as the orbit of a comet on a long voyage deviates a little, the earth can avoid the disaster, accuracy and delivery I don't think it's a problem, and the debris I think people can also have a way to make him small to the level of impermeable atmosphere

The current technology is still very difficult, and the only feasible way is to use a nuclear bomb, the question is.

1, the size of the nuclear bomb and the current level of delivery by humans, 2, the accuracy of throwing.

3. The big debris after the explosion can also destroy the earth.

The method you said is not feasible at the moment, the comet is moving extremely fast, and there is a lot of debris in the tail of the comet. It is impossible to install boosters or solar sails

Now it is difficult for earth technology to change the orbit of comets, and now it is difficult for technology to be discovered long in advance, even if it is intercepted, it takes time, a few days ago I watched the news that there was a barley asteroid flying from the side of the earth, and in the universe said that it was only so small that it was found nine hours in advance, so it was too late

If it is discovered earlier, the accurately calculated nucleus **** is enough to change its orbit, and it does not need to be so troublesome;

If found late. Basically, you can start praying, and humans can't destroy the material of the Great Comet yet.

In fact, it is very difficult for a comet to inflict a devastating blow to life on Earth, it needs a very large volume, and a star that has reached this size can also be found from a great distance with current technology (of course, the situation of n coincidental gatherings in the movie may occur, but the probability is so small that it is not considered) and then make corresponding countermeasures.

We are still very powerless, and this situation has really happened (a comet with a radius of tens of kilometers is coming), and basically we can only live with our destiny.

If it is big, it should not work with the current level of technology.

01 Comets have the potential to hit the Earth, and comets are divided into three parts: the nucleus, the coma, and the tail, which is composed of very thin gas. So, the Earth will not be affected when it passes through the comet's tail, but if the core of the comet, the main part of the comet, hits the Earth, it will not be so uneventful.

When it comes to comets, many people think of comets as beautiful celestial bodies with long tails. And in ancient times, the appearance of comets was often seen as a sign of disaster. In fact, it is just a natural phenomenon.

The comet we see is made up of three parts: the nucleus, the hair of the comet, and the tail of the comet. Among them, the comet tail is the most eye-catching, which can be tens of millions of kilometers or even longer. The main component of the comet nucleus is ice, and there is a small amount of dust.

Comets and tails are formed by gaseous dust volatilized by the coma's nucleus by solar radiation. At the beginning of the 20th century, astronomers calculated that in 1910, Halley's Comet would return to the vicinity of the Sun and that the comet's tail would sweep over the Earth.

At the time, people were terrified, and some newspapers even declared that the end of the world was imminent. On May 19, Halley's Comet passed through the Earth's orbit, and the Earth passed through its tail unharmed. In fact, the tail of the comet is made up of very thin gases.

So, the Earth passes through the tail of a comet, like a swallow through the smoke of a cook, and it will not be affected in any way.

A comet's tail sweeping over the Earth won't make a difference, but if the main part of the comet, the comet's nucleus, crashes into the Earth, it won't be so uneventful. Will the comet nucleus hit the Earth?

In the early morning of June 30, 1908, a celestial body with a huge fireball violently flew over the Tunguska region about 800 kilometers northwest of Lake Baikal in Siberia**. The setting may be more dazzling than the morning sun, and the thrilling roar can be heard 1,000 kilometers away. After many investigations, it was proved that this ** was most likely caused by a comet hitting the earth.

From July 16 to 21, 1994, 21 fragments of Comet Shoemaker-Levi-9, lined up like a string of pearls millions of kilometers long, continuously crashed into Jupiter, leaving huge black spots on Jupiter, the largest of which can accommodate two and a half Earths. As you can imagine, the energy of the impact is enormous!

It follows that there is a possibility that a comet will hit the Earth. However, there is no need to panic, as the chances of such an event occurring are slim to none. However, astronomers take this issue very seriously.

For example, the United States has a near-Earth asteroid search program to monitor near-Earth asteroids and comets to prevent them from colliding with Earth. Modern science and technology are highly developed, once a comet is found to collide with the earth, it is also possible to launch a non-penetrating and carry nuclear bomb to try to change its orbit and avoid colliding with the earth.

Frequent impacts, at a frequency of 6 times per 100 million years (a galactic sidereal celestial year). Flew away.

The vast majority of comets stay honestly outside of Neptune's orbit and pose little threat to inner planets like Earth. There are exceptions, and some comets have changed their orbits due to the gravitational pull of nearby large bodies. Such large objects could be Neptune, other stars or brown dwarfs in the vicinity of the solar system, or quasi-planets in the Kuiper Belt, such as Pluto or Sedna.

Once the orbit changes, it is possible to enter the inner solar system and become a comet visible to the naked eye, and there is also a small chance that it will hit the Earth. However, this is not easy, because on the way, you have to pass through the strong defense line built by the gravitational pull of Saturn and Jupiter, and even if you break through, it is very likely to crash headlong into the sun, because the Earth is too small after all. Comets are small celestial bodies, typically ranging from a few kilometers to hundreds of kilometers in diameter.

Theoretically, it is possible. For example, in 1994, Comet Shoemaker-Levy 9 hit Jupiter. It was an event that caused a sensation in the astronomical community at the time. Overall, however, the probability of an impact is very small.

Are you talking about the asteroid that hit the Earth 65 million years ago and caused the extinction of the dinosaurs? If so, then it must still be on Earth—it's all crashing into Earth, isn't it? The impact crater it created is located in the strata of the Yucatan Peninsula in Central America.

But I think it must have been shattered and destroyed long ago when it embraced Earth, and we can only find some of its wreckage now.

Scientists believe that what happened on Earth in the past is likely to happen again in the future, and it's only a matter of time. On July 20, 1994, the day the first piece of comet Shoemaker Levy 9 hit Jupiter, the U.S. House of Representatives Science Committee instructed NASA to begin tracking any comets, asteroids, or asteroid fragments that could hit Earth in the future. NASA** has also appointed a six-member team to study the possibility of developing an early warning system to warn of the path of celestial bodies colliding with Earth.

At the same time, some scientists began to discuss how best to destroy such a celestial body, or deviate it from its original orbit and enter a safe orbit.

Although asteroids and massive meteorites have the same chance of hitting Earth as comets in terms of their likelihood of hitting Earth, the damage caused by a comet impact is greater than that of rocky objects of the same size, because comets usually travel faster. But the comet's presence will at least give us a clear warning. Even with the naked eye, millions of kilometers away, a huge comet, dragging a glowing mist-like tail across the night sky.

With the help of telescopes, astronomers can predict the collision of a comet at least a year in advance.

Because a collision with a comet can have serious consequences, experts believe that serious consideration needs to be given to how to avoid such a catastrophe. Some astronomers have proposed the construction of a network of telescopes dedicated to searching for all near-Earth objects in the solar system, whose paths cross the Earth's orbit and are more than 1 kilometer in diameter, leading to large-scale destruction. Such a system is likely to enable scientists to identify all of these threats.

Unfortunately, it is undoubtedly easier to detect a comet's collision with Earth than to prevent it. So far, scientists and engineers have come up with several scenarios, but all of them have considerable risks.

One solution would be to send a nuclear-armed rocket into space, blow up the comet, or push it into a new orbit. Such a task requires extremely precise calculations. Astronomers must be absolutely certain that this celestial body is indeed going to hit the Earth, and in addition, the nuclear ** may turn what has been a "proximity bomb" into a direct hit.

Aerospace engineers must design the right orbit for the rocket and detonate the warhead precisely at the right time to achieve the desired effect.

With adequate warnings, it is even possible to use the ** device altogether. Some scientists suggest sending astronauts to a approaching comet or asteroid and attaching a powerful rocket engine to it, or, even a giant "solar sail". The latter is a huge reflector made of sheet metal that collects the pressure of sunlight so that the sails of a sloop can slowly propel the celestial body into a new orbit against the wind.

However, this scheme estimates that the alarm time is measured within a few years. If we find that the comet hits the Earth only a few months ago, then a nuclear warhead rocket may be the only viable solution.

There is a tall man on top, what are you afraid of.