Lead
People will always have their own troubles, and in this vast universe, the earth is so small, so human beings have many worries, that is, meteorites from space will fall on the earth.
So how harmful are meteorites to the Earth?
What would happen if a meteorite did hit Earth?
However, in 1994, a meteorite hit Jupiter, and if it weren't for Jupiter, humanity might have ceased to exist a long time ago, so what happened?
What is the truth for the saying "If Jupiter hadn't saved the earth, humanity might have ceased to exist" a long time ago?
1. Meteorite impact.
On the earth, there are a lot of craters, and the formation of these craters is due to the impact of meteorites on the earth, and there are a lot of meteorite belts in space, and the meteorites in these meteorite belts have different volumes, shapes, etc., all of which are fragments that did not gather together when the earth was formed.
So in the process of formation, it will be attracted to the earth by the gravitational pull of the earth, thus forming a crater.
The biggest threat to the earth from meteorites was 65 million years ago, and that was the cause of the extinction of the dinosaurs on the earth, and there are many reasons for the extinction of the dinosaurs, some people think that it was due to volcanic eruptions, but this theory was later refuted, some people think it is due to climate change, but it is also denied.
The final conclusion was a meteorite impact.
And in 1994, a comet smashed into Jupiter, so whose comet is it?
This comet is the ninth comet, which was later named Comet SL9 by scientists.
At one point, the exhaust length of Comet SL9 reached 58 million kilometers.
The comet was discovered in 1970 by Harold Reitchy in Arizona, USA, and in July 1993, Comet SL9 was discovered, and in July 1994, Comet SL9 had already left the solar system, so scientists had no way to make observations.
On July 16, 1994, Comet SL9 was about to hit Jupiter, and in July, Comet SL9 split into nine pieces, all of which were large fragments, four of which were more than 1 kilometer in diameter.
When Comet SL9 hits Jupiter, it is very fast, reaching 60 kilometers per second.
And when it collided with Jupiter, there was a very large explosion, the energy of the explosion was equivalent to the power of the explosion of 500,000 nuclear warheads, and the flames after the explosion lasted for nearly 7 days, and this explosion also left a huge black spot on the surface of Jupiter, which is larger than the Earth.
2. The role of Jupiter.
Therefore, in space, there are many dangers, among which there are meteorite belts, so Jupiter must be the great savior of mankind in this regard.
Because Jupiter is the largest planet in the solar system, Jupiter's mass is also very large, and Jupiter's diameter is also the largest in the solar system, and Jupiter's gravity is also very large, 2.5 times that of the Earth.
Therefore, in the solar system, meteorites will be attracted by the gravity of Jupiter, so they continue to move closer to Jupiter, so the number of meteorites in Jupiter's meteorite belt is very large, and the number is also the largest.
The location of the Earth is relatively far from the Sun, so in the solar system, the number of meteorites will be relatively small, so Jupiter is like a shield that can protect the location of the Earth in it.
Jupiter will also attract meteorites to its own surface, so there are many craters on the surface of Jupiter, and there are meteorites in Jupiter's meteorite belt, all of which are attracted to its surface by Jupiter's gravity, so the location of the earth is protected by Jupiter, so the possibility of meteorites hitting the earth is very small.
Jupiter has a lot of moons in the solar system, the largest of which is the Galilean moon, and in the Galilean moon, there is ice fog, which is made of ice and hail, so in space, there are a lot of dangers, and these dangers will be attracted to Jupiter.
So it can be said that Jupiter maintains the stability of the solar system to a certain extent.
And in 1994, Jupiter was hit by Comet SL9, leaving a huge black spot on the surface of the guide Jupiter, which was larger than Earth's, and this black spot lasted for several months before gradually disappearing.
3. What happens when a meteorite hits the Earth?
What happens when a meteorite hits Earth?
First of all there will definitely be very large flames, and there will be a lot of volcanic ash in the flames, and then it will have an impact on the climate of the earth, it will cause the climate of the earth to get colder, then the plants and animals will die, but for those organisms that can adapt to the changes in the climate, they will continue to survive.
There has been a meteorite impact on the earth before, that is, 180 million years ago, when a meteorite hit the earth, the volume of the meteorite is very large, with a diameter of 12 kilometers, and after this meteorite hits the earth, it will produce a large amount of volcanic ash, and then it will cause the earth's climate to become colder, plants and animals will not be able to survive, so that most of the life on the earth will disappear.
There will also be a large number of volcanic eruptions, which will change the geological activity of the earth, and a large number of volcanic gases, which will have an impact on the atmosphere, which will change the composition of the atmosphere, which will pose a threat to life on Earth.
Therefore, the threat of meteorites to the earth is still very large.
4. How to deal with meteorite impacts on the earth.
How to deal with a meteorite hitting the Earth?
The first is to rely on technology, although the probability of a meteorite hitting the earth is very small, but it does not mean that there is none, so it is still necessary to rely on technology to warn of this threat.
Technology can also launch nuclear warheads that can damage meteorites, thereby reducing the threat of meteorites to Earth.
Although there are currently a lot of nuclear warheads in the world, these nuclear warheads are for the peace of mankind, so they will not be used against meteorites, but this does not mean that there are no other methods.
Scientists are also working on new ways to deal with meteorites that can protect the peace of the planet.
V. Conclusion
Although there are a lot of dangers on the earth, human beings still have to move forward, or pay attention to the development of science and technology, so as to be able to improve their own protection capabilities, do not have to worry too much about a meteorite will hit the earth, when the meteorite really hits the earth, human beings will find a way to deal with it, so as to protect the peace of the earth.