Modern science believes that our universe was born 13.8 billion years ago. 13.8 billion years ago, an singularity exploded. The singularity is a point with infinite mass, infinite energy, infinite density, infinite heat, and infinite volume. After this point exploded, the universe quickly expanded to the surroundings. After 13.8 billion years, the universe expanded to what we see now. The celestial bodies in the universe were all produced after the Big Bang, such as stars, planets, comets, asteroids, etc. We see our Earth. In addition to the Earth, there are also Mercury, Venus, Mars, Jupiter , Saturn, Uranus and Neptune.
However, the biggest difference between the planet on Earth and other planets is that life is born on Earth. The emergence of life has added a lot of color to the planet on Earth. Especially after humans appear, it has unraveled many mysteries on Earth. According to scientists' research, we can know that the earth is constantly rotating and revolving every moment. The time for the earth to rotate is about 24 hours, and the time for the rotation of a circle is about 365 days. Seeing this, many people may have a question, which is why the earth rotates. According to the law of universal gravitation in Newton , we can know that any mass object has gravity. The greater the mass of an object, the greater its gravity.
In the solar system, the sun has the largest mass, so its gravity is also the largest. The powerful gravity can attract all the eight planets . In order not to be swallowed by the sun, the eight planets can only choose to rotate and revolve continuously. The rotation and revolve can generate centrifugal force . The centrifugal force and gravity cancel each other, so the eight planets can steadily orbit around the sun. However, Einstein does not think so. He believes that the universe is a huge film. The reason why celestial bodies with small mass rotates is because celestial bodies with large mass can bending the film of the universe, so celestial bodies with small mass rotate around celestial bodies with large mass.
In addition to the eight planets in the solar system, other celestial bodies are also moving continuously. While the earth revolves around the sun, our solar system is also rotating continuously. The solar system is rotating around the Milky Way galaxy , and the Milky Way galaxy is rotating around a larger galaxy. Scientists have calculated that the average distance from the earth to the sun is about 150 million kilometers, and the distance from the earth revolves around the sun is about 942 million kilometers, which is equivalent to the earth flying 108,000 kilometers in the universe every hour. At such a fast speed, the earth has been orbiting the sun for 4.6 billion years.
And the sun is constantly rotating around the Milky Way, with a rotation speed of about 220 kilometers per second. Simply put, our solar system is carrying the earth to run in the universe, and we live on the earth, which means that the earth takes us to run in the universe. Seeing this, I believe many people will have a question, which is where the earth wants to take us? According to scientists' research, we can know that there is a supermassive black hole in the central area of the Milky Way. The mass of this black hole is very large, more than 4 million times that of 's sun's mass . The black hole is the most mysterious celestial body discovered by humans in the universe, and its gravity is also very large. The entire Milky Way is rotating around this black hole.
Black holes are formed after the death of stars. Generally speaking, stars with small mass will become white dwarfs after the death of stars. After a medium-mass star dies, it will become an neutron star . After a supermassed star dies, it will become a black hole. Our sun is a small-mass star among the stars, so it will become a white dwarf after the sun dies. After research, scientists found that several large galaxies around the Milky Way are moving around a mysterious celestial body, which shows that there are still celestial bodies that are larger and more powerful than black holes hidden in the universe. In order to understand this mystery, scientists have also made a lot of efforts.
In 1986, scientists discovered a gravitational source in super galaxy cluster . This gravitational source is about 250 million light years away from the Milky Way. Its scale has reached 400 million light years, and its mass is about 5*10^16 times that of the sun. This number has far exceeded the cognitive range of human beings. Scientists call this huge gravity center giant . It can be said that most of the surrounding galaxies are affected by this giant galaxy. Seeing this, I believe many friends will have a question, which is what this giant galaxy is? Many scientists have speculated that this giant source may be a singularity. Although we have not discovered singularities so far, scientists believe that the universe originated from the Singularity Big Bang.
If according to scientists' theory, the singularity is a point with infinite mass, infinite energy, infinite density, infinite heat, and infinite volume. However, in our existing physics, there are no infinite or infinite small points. However, because the singularity is too mysterious, scientists can only describe it with singularity. At present, human technology is limited and cannot unravel all the mysteries in the universe. However, with the advancement of human science and technology, in the near future, we may be able to unravel the mysteries of this giant source.
Seeing this, many friends may have a question, since the earth is taking us to run rapidly in the universe, why don’t we feel it? This actually uses the principle of relativity. According to Einstein's theory of relativity, we can know that any object is doing relative motion . For example, we see a speeding car moving forward. This is because we use a stationary object as a reference, so we can see the car moving forward. We cannot feel the earth moving because the earth is too big and we cannot find a suitable reference. If we fly out of the earth and take a planet or star as a reference, then we can see the changes of the earth.
The editor believes that the universe is vast and mysterious. There are many phenomena in the universe that humans cannot explain yet. This is because human technology is limited. However, humans can walk out of the earth to explore the universe under the development of science and technology for just a few thousand years. This shows that the development of human science and technology is also very fast. The editor believes that in the near future, with the advancement and development of human science and technology, humans will definitely be able to unlock all the mysteries in the universe in the future. At that time, we will know how the universe was born and all the mysteries in the universe. The editor hopes that this day will come soon. Do you have anything to say about this?
