Why is there an Earth? Thank you! Is there a second Earth? Everyone s help!

There is you so there is the earth.

Is it in the universe or in the solar system?

Not in the solar system, here are the reasons.

If there is a second Earth, and it is not observed, the only possibility is that it is on the other side of the line between the Earth and the Sun, and if it is not in the same orbit as the Earth, and its orbital period around the Sun is set to be different from that of the Earth, then it cannot always be on the other side of the line between the Earth and the Sun, so it must be observed, but it is not. Therefore, it can only be in the orbit of the Earth, and for two celestial bodies to use one orbit, two conditions must be met: 1

The mass of one celestial body must be much smaller than that of another.

2.They must have the stars in equilateral triangles.

Based on these conditions, it can be seen that there can be no other Earth in the solar system.

However, the vast universe is a vast sea of stars. How many celestial bodies there are, I believe that there must be one that is the same as the earth. What does the landlord think?

The sun is expanding, and the habitable zone of the solar system is constantly moving outward, so one day the solar system will no longer be suitable for life on earth.

There are two kinds of living things, one is visible and touchable, and the other is invisible and intangible. Organisms are multiplied for generations, and the reproduction of human beings has brought about the development of the earth and brought disasters, while the reproduction of animals and plants has brought vitality to the earth

Sometimes I really wish I was an animal, I could live in a dense forest away from the hustle and bustle of the city, at least the animal would not make harmful garbage everywhere to pollute the environment, but the forest that was boring before was no longer the peaceful paradise of the past

It is said that human society is a society of spiritual civilization, but how many of the things done by today's human society are civilized, and there is dirt everywhere I always feel that I am living in a messy human society

There are both positive and negative aspects to everything, and being civilized also means that there is a relative need to sacrifice something

Since the beginning of the development of human society, hundreds of animals and plants in the world have been tragically extinct Human beings are occupying their habitats in order to live As the saying goes: the strong survive For animals and plants, human beings are the strongest and strongest in the world

I often think about the diseases that have brought people great fear in recent years: AIDS, foot-and-mouth disease, SARS, avian influenza, leukemia ......Aren't these the consequences of human beings' own making? I really want to look up to the sky and smile, it's really self-defeating!

The results are ironic, but they are very real

Originally, these have brought great harm to human beings, but human beings themselves have not seen clearly and become more wanton Cannibalism Don't feel Cannibalism This word is used too much, and don't think I'm radical TV news often reports that so-and-so black processing point produces inferior food, black-hearted producers, in order to earn personal profits, add excessive amounts of chemicals into the food people eat, use excessive Sudan red castration to make red duck eggs, and then there is sick and dead pork, and use hair to make soy sauce, Profiteers put the lives and deaths of others aside for their own benefit, so people are selfish

I hope that in the future, I will not become colorful in the big dye vat of society, I am me, don't change my nature for the sake of profit!

I also hope that human beings will take action, raise their consciousness, protect the earth, and protect the homeland on which all kinds of creatures depend! Do you remember the tsunami that occurred all over Asia, if people's awareness is not raised, I am afraid that in the future, we will face more disasters and losses, and in another 20 years, mankind will taste more disasters that are difficult to describe in words!

To protect the environment is to protect yourself, and to love others is to take care of yourself! Let's communicate with love! Finally, I quote a three-character scripture to end the article, although I will memorize it when I am a child, but how many people are born when they grow up At the beginning of people, the nature is good, and being kind to others is to be kind!

Don't slack off, act fast! (All of the above is a personal opinion).

Formed by the condensation of less dense interstellar dust. These dusts are collected, collided and squeezed towards the center due to gravity, the internal temperature continues to rise, the pressure increases, and the dust condenses with each other to form a relatively solid solid. Then the radioactive elements in the dust continue to decay, release a large amount of heat, so that the internal temperature continues to rise, under such high temperature and high pressure conditions, various chemical reactions and nuclear reactions are carried out, new substances are constantly produced, and heavier elements such as C, Si, Fe and so on appear.

After the temperature continues to rise to the melting point of iron, the molten iron flows to the center of the earth to form the core, and other lighter substances (rocks, etc.) float on it, gradually cooling and solidifying to form the earth's crust, and the part between the core and the earth's crust is still liquid due to high temperature and pressure, forming the mantle. The lightest gas is at the top, forming the primordial atmosphere that surrounds the Earth. In this way, the earth was basically formed.

Earth The home of generations of human beings.

Listen, I have the following opinion on the question of zombies.

The first is the way the virus is transmitted, which is transmitted through contact with bodily fluids, that is, biting, why biting, it is commonly said that it is by taking off the organism to maintain movement, and it is the same as eating, so why bite instead of eating, there are two reasons, one, it loses the ability of human moral thinking, and two, it is out of animal instinct. Is it understandable that they are already in a state of cerebral cortical death, and how can they recognize what is in front of them?

Secondly, with regard to the structure of the zombie body, if the zombie is from a near-dead or dead human, it means that the body functions are dead, which means that breathing, heartbeat, and digestion have stopped, and there is no way to replenish energy through eating, and the decay of the body can be explained. However, in this case, the motor function of the limbs is reduced, and eventually it will decay to the point where it is impossible to move, so it cannot attack, and in the anaerobic state, 14 seconds will cause irreversible brain function loss, and all movement is dominated by the brain in the form of electric potentials, so if the zombie exists, there must be breathing and heartbeat, so the body will not decay.

Finally, there are viruses or bacteria, as we all know, viruses are living organisms without a cellular structure, cannot survive without a host, and only have RNA (or DNA) and protein capsids, which cannot discharge electricity to innervate the brain. Bacteria are relatively more complex, but their large size is more likely to be detected by the body's immune system than viruses, causing high fever and inflammation in advance, and basically does not control the brain.

So I don't think zombies can exist, but if it's the kind of Ruan virus that changes the basic ** of human genes through reverse transcription, it is more terrifying, and the resulting gene changes cause other proteins to interfere with thinking, making thinking confused, emotional out-of-control, depressed, irritable, and the body functions normally but behaves extremely aggressively.

The above is my personal opinion.

I'm so tired, I'm tired, ** points.

The current lifespan of the Earth is 4.6 billion years, and it is still unknown how long the Earth will exist in the future. Here are the references. How long does the life of the earth take the head of the hall?

The Earth is speculated to have survived for 4.6 billion years, but how long will it live? Scientists believe that if the Earth is allowed to move freely, it may exist forever, but if other external factors interfere with it, the Earth may have an end of life. The external factor is the sun in the first place, because it is the closest planet to the earth and can have a destiny on the right earth That is to say, all the energy and power on the earth come from the sun, and once the sun has three long and two short, it is bound to affect the earth.

Before the 30s of this century, people always thought that the sun would one day burn out, turn from white to orange and then to red, and finally become a dark star that was silent, but its brilliant life. In the 30s, when physicists learned the mystery of the sun's light, the situation was very different. It turns out that the Sun's energy comes from its thermonuclear reactions, and the Sun's lifetime will pass through the gravitational contraction phase, the main-sequence star phase, the red giant phase, and the compact star phase.

The main sequence phase is the period of stability of the Sun. This phase will last for 10 billion years. At present, the sun is only halfway through and is in middle age.

Once the Sun reaches the red giant stage, then the end of the Earth is coming. Of course, this is billions of years away. Are there any other factors besides the sun's interference with the earth?

Some scientists believe that the Sun may have a brother, a companion star of the Sun, which orbits the Sun day and night, and every 26 million years, turns to the closest place to the Sun"Make waves"Its strong gravitational pull will cause a large disturbance of many comets, and 1 billion comets will be on a rampage in the solar system, and the Earth and other planets will become these comets"Target"。If the mass of the comet that collides with the Earth is large enough, the consequences are unimaginable: the extinction of light organisms and the upheaval of ecology; Heavy landslides and earth cracks, the earth"Broken bones"。

However, this solar companion star, which could bring misfortune to Earth, has not been discovered, although many scientists believe it exists.

In the 18th century, the German philosopher Immanuel Kant put forward the hypothesis about the formation of the earth"Nebula hypothesis"。

Before the formation of the solar system, it was a nebula made up of red-hot gas. 4.6 billion years ago, when the cooling of the gas caused contraction, it caused the nebula to spin. Due to gravity, the gas and wind wind and grass contract and rotate faster, and the nebula becomes a flat disk.

We know that the washing machine used to wash clothes in modern families has a dehydrator, put wet clothes in it, and the dehydrator rotates quickly, and the moisture in the clothes will be "thrown" out, and the wet clothes become dry clothes. The force that throws water out is the force generated by the water droplets leaving the center when they move in a circular motion, which is called centrifugal force. In the same way, when a rotating nebula shrinks and rotates, and the centrifugal force of the surrounding matter exceeds the centrifugal pull of the center on it, it separates a ring.

And just like that, one ring after another was created. Eventually, the central part becomes the sun, and the surrounding rings become planets, one of which is the Earth, which was created four or five billion years ago.

At the beginning of the formation of the earth, the temperature was low, and all kinds of materials mixed together and lived in peace. Later, due to the action of radium, uranium and other radioactive materials in the earth's interior, the mountains erupted and intensified, and mountains, hills, and plains were gradually formed. Due to the irradiation of the sun, the temperature of the earth slowly rises, and the chemical action of the earth's internal materials releases a large amount of carbon dioxide, methane, nitrogen, water vapor, etc.

These gases rise to the Earth's exterior to form the atmosphere. Rainfall occurs when water vapour meets cold air currents at high altitudes. The earth is hit by a lot of rain, and it merges into oceans, lakes, and rivers in low-lying places, so that plants, animals, and humans are also there.

It took billions of years to evolve the Earth to become what it is today.

I have a scientifically accepted answer, saying that the primordial period of the universe has experienced the universe **, and all stars and planets are fragments of the universe**, but the volume is different, and the large gravitational attraction is strong, and the small gravitational force is small, so the small ones revolve around the big ones. Over the years, the shape of each fragment tends to be round, and the earth is one of the fragments, and it revolves around the large fragment of the sun.

Haven't you read the Bible? Chapter 1, Verse 1 "In the beginning God created the heavens and the earth. "There's only one answer, look for yourself and think about it.