If a comet hits the Earth in 2013, will the Earth still exist?

Note that it's a "comet" and not a "comet".

All comets are made up of three parts: the nucleus, the coma, and the tail. Comets and tails are formed by the evaporation of gases and dust from the heat of sunlight when the nucleus of the comet is close to the sun, and then blown away from the nucleus by light pressure and solar wind. When away from the sun, due to the weak sunlight, the comet hair and tail will disappear, leaving only a "dirty snowball" comet nucleus.

The largest comet nucleus is only 10 to 10 kilometers in diameter, which is equivalent to a very small asteroid. If such a comet did hit the Earth, it was certain that it would cause a huge biosphere catastrophe, but for the physical structure of the Earth itself, such an impact could almost be ignored, and it could create a crater with a diameter of 100,200 kilometres (if the core of the comet was rocky enough), and perhaps only a second Tunguska**. In short, the survival of human beings does not represent the safety of the earth, just as the fleas on a dog do not represent the interests of a dog.

Falling in Japan, just kidding, generally won't hit, comets are basically made of ice, basically exist in the space outside Pluto, occasionally receive the solar system lunar effect will come in, basically will be sucked by the planetary gravity of the bowl noodles, a few fish that slipped through the net basically burned out to the atmosphere.

Yes. Collisions are a normal thing in the universe, will the universe disappear due to countless collisions in the future?

Surely it will pull This is a must How can a little comet destroy the earth? Just kidding: So the earth is the same.

Since the birth of the earth, I don't know how many celestial bodies have struck, and you and I are still doing well.

Categories: Education, Science, >> Science, Technology.

Problem description: I just saw the message on the Internet, can friends with knowledge in this area answer it?

Analysis: After this news was issued, it was widely spread on the Internet and aroused strong public concern, which asked the relevant domestic astronomical institutions about the accuracy of the report. For this reason, Yang Jiexing, a researcher at the Purple Mountain Observatory of the National Astronomical Observatories, said that since the news neither has the name of the comet nor provided any reference data, the information that the so-called "giant comet hit the earth at the end of the month" has no scientific basis, and the public does not need to panic.

It is understood that there are about 2 million asteroids in the entire solar system, and only about 4,000 have been discovered by humans, and the number under human monitoring is even less. Many stars are only noticed when they are close to the Earth, and some come into the human eye after they have bypassed the Earth and entered the orbit of the Moon. Currently, more than a dozen stars are approaching the Earth, and they have a diameter of up to 5,000 meters.

Scientists** believe that these stars can only collide with Earth once every 20 million years.

The famous Russian astronomer Nikolai Fedorovs's original intention in releasing this news was to call the attention of the scientific community to those near-Earth asteroids, and did not attempt to cause panic, but our lovely media lost no time in coming out to build momentum.

Even if there really is such a shameless comet, meteorite and other things to patronize, we humans can still stand alone by destroying the current scientific and technological means.

Comet C 2017 K2, or K2 for short, was the farthest active comet ever discovered – a title that was recently overtaken by the giant comet Bernardineli Bernstein, discovered last year. But even if he loses his pants and disturbs Hu Sui, the title of "farthest", K2 can also be praised by Li Qi for its activity. Initially the comet spewed gas and dust far away from the solar system, but more recently the comet has been in a closer orbit to Jupiter.

Five years later, this icy celestial body is finally approaching Earth, a feast for the eyes of amateur astronomers who follow it. K2 is closest to Earth on July 14 and closest to Sun is December 19.

It's possible.

There are many theories about the extinction of the dinosaurs, with the most supported being the extinction of the dinosaurs as a result of the asteroid impact on the Earth and the deterioration of the climate.

If an asteroid hits the earth, it is estimated that it may not be very feasible now, and the asteroid hitting the earth is a small probability event, even if an asteroid comes, a nuclear bomb can be launched at a long distance to derail it, and it can be avoided from hitting the earth.

If it was a worsening climate, there was a trend now. In order to develop the economy, human beings ignore environmental pollution, and the arbitrary emission of exhaust gas and garbage has led to environmental degradation, if it is not changed, there will be a day when the earth is not suitable for human habitation, and we do not find another suitable place to live, human beings will be extinct.

The asteroid 1999 FN53 passed safely by Earth on May 14, 2015, at a distance of about 6.3 million miles, or 26 times the distance between the Earth and the Moon.

According to foreign ** reports, a self-proclaimed "prophet" of the future prophet Efrain Rodriguez (Efrain Rodriguez) issued a statement saying that in September 2015, mankind will face an apocalyptic attack, and an asteroid will hit Puerto Rico, and trigger a series of serious consequences. Rodriguez also pinpointed the timing of the impact between September 22 and 28, when the impact occurred, and that life on Earth would face the end of life. Rodriguez's prediction has become a hot topic of several large social discussions in recent days, causing NASA to come out and clarify, saying that Rodriguez's prediction is unfounded.

NASA believes that asteroids are indeed one of the greatest threats facing humanity, but an impact that could destroy Earth's civilization is still a rare event.

A NASA spokesman said that asteroids and comets have the ability to threaten the survival of human civilization, and the probability of such a large-scale collision is very low, at least once in a million years. According to the Asteroid Monitoring Network, there will be no asteroids with enough mass and threatening orbits for the next few hundred years, so we are still safe. In Rodriguez's theory of prophecy, an asteroid will hit the Earth in late September, he believes that at the moment several major countries know what will happen, but strict secrecy prevents a mass panic, and the rich and stars have enough time to prepare to flee to safety.

Rodriguez said that the news of the asteroid hitting the Earth in September was God, and that he was able to use the powers of the prophet to do so, believing that the asteroid impact site might be near Puerto Rico and that the asteroid impact would trigger a tsunami and a tsunami. A powerful impact can threaten the American continent and wreak havoc on Mexico, the central and southern United States, and even the East Coast. Rodriguez warns:

NASA should issue an alert to evacuate people from these areas and reduce the damage caused by asteroid impacts. A NASA spokesman refuted this, arguing that the current asteroid monitoring network has not found such a threatening asteroid, and we will be safe in the next few hundred years.

Large solar storms are real. But no matter how big a solar storm is, it will not be fatal to the Earth.

There were rumors several years ago when the asteroid hit that there were two scenarios for this kind of thing.

1. Asteroids come from the edge of the solar system, asteroids are very small and usually have to be discovered in the orbit of Jupiter, and this event will not be years in advance, from the discovery to the Earth's orbit will not be more than a few months, so this situation cannot happen.

2. Coming from an asteroid, this will not be predicted years in advance that there is no such precedent before. Only the little star has reached a very close orbit before it is discovered.