Andromeda immigrant greenhouse

The earth is a beautiful planet. There are many creatures living on the earth, including marine creatures, terrestrial creatures, amphibians and microorganisms. Among many creatures, human beings are the cleverest creatures on earth. Since the birth of mankind, we have been constantly exploring the mysteries of the world. After so many years of human exploration of the world, now human beings have a certain understanding of the universe. At present, all the celestial bodies we can see are produced after the Big Bang, such as stars, planets, comets, neutron stars and white dwarfs. Our earth is a planet, and there are eight planets in the solar system, namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

However, the biggest difference between the earth and other planets is that life was born on the earth. The appearance of life has added many colors to the earth. Especially after the appearance of human beings, many mysteries on the earth have been solved. Humans can stand at the top of the earth's food chain in just a few thousand years, which shows that the speed of human science and technology development is still very fast. However, in the universe, black holes are also at the top of the cosmic food chain. I believe many people are familiar with black holes. In fact, black holes were proposed by scientists hundreds of years ago. 1783, British astronomy enthusiasts wrote a letter to the famous scientist Caldi Xu at that time. In the letter, he believes that there is a mysterious celestial body with very large mass in the universe, and even light cannot escape from its surface. At that time, he called this celestial body a dark star.

Later, in 19 16, Einstein published the general theory of relativity, which was based on Newton's universal gravitation and predicted a celestial body in the general theory of relativity. Einstein believed that there was a mysterious celestial body in the universe. When the mass of this celestial body reaches a certain level, there is no way for light to escape its gravity, but Einstein himself did not believe that there was such a celestial body in the universe at that time. Later, German physicist karl schwarzschild gave an accurate explanation of black holes. He believes that when a large amount of matter is concentrated at one point, it will produce an event horizon around it. Once it enters this horizon, the object will be sucked in. Finally, scientists call this mysterious celestial body a black hole.

All along, humans have only mentioned black holes in theory. It was not until 20 19 that scientists took photos of black holes for the first time, which also proved that black holes did exist in the universe. At present, human understanding of black holes is limited. Now we know that black holes are extremely dense celestial bodies, which can devour any substance. As long as it enters the black hole horizon, it will be swallowed up by the gravity of the black hole. Even light can't escape the gravitational range of a black hole. There are many black holes in our galaxy. According to the observation of scientists, a black hole named GROJ 1655-40 is flying towards the earth. How should humans respond?

Seeing this, many friends may ask a question, that is, how did black holes form? Scientists believe that black holes are another form after the death of stars. Generally speaking, small-mass stars will become white dwarfs after death, medium-mass stars will become neutron stars after death, and supermassive stars will become black holes after death. Our sun is a low-mass star in the universe, so it will become a white dwarf after death. There are many supermassive stars in the universe, so there are many black holes in the universe, and black holes are moving.

According to the observations of scientists, we can know that there is a supermassive black hole in the center of a larger galaxy. The mass of the black hole in the center of our galaxy is about 4 million times that of the sun. This black hole is not very big in the universe. There is a supermassive black hole 65.438+0.4 billion light years away from the Earth. The mass of this black hole is about 66 billion times that of the sun, and there is a black hole 3.5 billion light years away from the earth. Its mass is 654.38+096 billion times that of the sun. In addition to these, there must be bigger black holes in the universe, but humans have not found them yet. Because black holes can devour light, it is difficult for humans to find them in the universe.

At present, human observation of black holes is mainly determined by accretion disks emitted by black holes. When a black hole devours matter, it will form a shiny accretion disk around it. At this time, humans can observe them, and this black hole that is flying to the earth is 6000 light years away from the earth. Its mass is about seven times that of the sun. At present, it is devouring a star. During its flight, the celestial bodies along the way will be swallowed up by it. Scientists have calculated that if calculated according to the flight speed of this black hole, it will reach the solar system in about 10 billion years. When the black hole approaches the solar system, the celestial bodies at the edge of the solar system will begin to lose.

The earth and the sun will also be affected. Strong gravity will suck away all the celestial bodies in the solar system and then slowly be swallowed up. 654.38+million years is not very long for human beings. After all, the earth has a history of 4.6 billion years. In the history of 4.6 billion years, the life on the earth experienced five mass extinctions, and human beings were born after the fifth mass extinction. I think, at the current speed of human science and technology development, 10 million years later, human beings should have realized interstellar migration. At present, scientists have discovered planets similar to the earth in the universe, but these celestial bodies are all outside the solar system, and now there is no way for humans to fly out of the solar system.

Humans can go out of the earth and explore the universe in just a few thousand years, which shows that the speed of human science and technology development is very fast. If this development speed continues, then in the future, with the passage of time, it will be possible for human beings to realize interstellar migration after 654.38+million years. At that time, all we had to do was emigrate to another planet. Maybe by then, human science and technology will be enough to take away the whole earth, so that we can find a new home with the earth, although now. At present, the biggest problem facing mankind is not actually this black hole, after all, this black hole is still a certain distance from the earth.

If this black hole changes lanes in the middle, the threat to the earth will not exist. The biggest threat facing mankind now is the destruction of the earth's environment. Now the earth's ecological environment has been destroyed and natural disasters have increased year by year. If it continues to develop for a long time, human beings may disappear from the earth after thousands of years. So the most important thing for mankind at present is to protect the earth's environment. Only in this way can human civilization develop for a long time. Do you have anything to say about it?