What would happen if Earth was a two planetary system?

In the case of binary star systems, the difference in the mass of the two stars at the time of formation causes them to have different stages of evolution and time.

From the beginning of entering the main sequence, the massive one will first evolve to the late stage, break away from the main sequence, become a red giant, and soon expand to its Loch size. After that, a mass transfer between the two stars occurs, that is, the hydrogen-rich gas in the expanding outer layer of the massive star flows to the low-mass main-sequence star, becoming a large-mass main-sequence star. The original massive star will "shed" its outer shell, revealing the inner stellar nucleus, which is a white dwarf.

This is the current relationship between Sirius and its low-mass companions. <>

In fact, it is now a binary star system along with the Moon. It's just that the climate and landforms vary greatly.

In addition, it seems inappropriate to use the word revolution for binary star systems, which orbit the Sun.

As far as the subject is concerned, regardless of whether life evolved at the same time on the binary planet, when one of them evolved intelligent life and could land on another planet, history is truly a new page. To put it another way, it doesn't matter if there are two stars or not, it depends on how far the two planets are from each other, which is directly related to the time it takes for intelligent life to log in. It's like there is a planet in the distance that is as suitable for the survival of earthlings as the earth, and we can't land on it for the time being.

Maybe you won't be able to land until the day of the end of humanity.

Most likely to form a binary star system, such as Pluto and its moon Charon, the difference between a binary star and the Earth-Moon satellite system is that the common center of mass of the binary star is located outside the surface of the two celestial bodies. Due to the gravitational influence of stellar perturbations and other neighboring planets, such two-planetary systems are often unstable and may collide.

Adding a celestial body of the same size as the Earth at the other end of the Earth's orbit around the Sun will inevitably upset the balance, and after several planetary-level impacts and bounces, the shape of the entire solar system will change, which will cause the trajectories of the eight planets to be disordered, and even cause the destruction of the planet.

If the Sun and another star formed a binary star system, the Earth and the creatures above it, as well as human civilization, would definitely be completely different from what they are now. A double star actually means that on the earth, with the naked eye, two planets are very close together, so it is called a double star In fact, he does not have any special significance in astronomy.

Planets within 20 AU of the solar system can survive. The outermost planet is Saturn, while Uranus, Neptune, and the Kuiper Belt have all been killed, and the Oort cloud has long since vanished. It is based on the premise that the sun still revolves around the earth and the earth will rotate.

Theoretical physics does not study the composition of matter, the composition of matter, the structure of matter, the size of matter, and the subdivision of particle matter, but only focuses on extracting the basic properties of matter, and then understanding all aspects of the universe.

The peculiarities of the earth are embodied in:

It is currently the only planet in the solar system known to have living matter.

There are two reasons why the earth has this peculiarity.

From the perspective of the Earth's cosmic environment:1The earth has a steady stream of sunlight; 2.The earth has a relatively safe cosmic environment, and the eight planets go their own way and do not interfere with each other.

From the point of view of the earth itself:1The distance between the sun and the earth is moderate, so that the earth's surface temperature is suitable; 2.The Earth's volumetric mass is moderate and can form an atmosphere; 3.The Earth's rotation and revolution periods are moderate; 4.The temperature of the earth is moderate, and liquid water is present.

Solution: The Earth is an ordinary planet in the solar system In terms of motion characteristics, the Earth is very similar to the other seven planets; In terms of structural features, Earth has many things in common with Mercury, Venus, and Mars

a. The rotation period of the eight planets: Mercury sky, Venus sky, Mars sky, Jupiter sky, Saturn day, Uranus sky, Neptune day, the earth's rotation period is heaven, and the rotation period of the seven planets is not the same as that of the earth, so it does not meet the topic

b. The volume and mass of the earth are moderate, and its gravitational pull can cause a large amount of gas to gather around the earth to form an atmosphere, mainly nitrogen and oxygen, and other planets lack oxygen, so it does not meet the topic

c. In the solar system, the orbit of the earth and other planets around the sun is approximately circular, the orbit is almost on the same plane, and the direction of rotation around the sun is from west to east, so it is correct

d. The surface temperature of the eight planets: Mercury has a maximum of 427 °C and a minimum of -173 °C; Venus reaches a maximum of 480°C; Mars has a maximum of -12°C and a minimum of -76°C; Jupiter's temperature is -148°C; The surface temperature of Uranus is about -180°C; Neptune's surface temperature is about -°C214; The average temperature of the Earth's surface is 15°C, so it does not fit the topic

Therefore, c: Comments:

Question Points: The conditions and causes of life on Earth

Test Center Comments: This question examines the relationship between the Earth as an ordinary planet and the other seven planets, which is a basic question and mainly tests students' understanding of textbook knowledge

The Earth is a unique planet, and in fact this view is quite reluctant.

This observation point is completely from the perspective of life on earth. In fact, each planet has its own unique characteristics, and the Earth is characterized by the presence of liquid water. And this characteristic is only compared with the very few planets known to mankind, and it is not known how many unknown planets have this special modification in the universe, so it cannot be rashly concluded that the earth is a unique planet.

As we all know, the earth that we can survive on a regular revolve around the sun, and it is the sun that provides a steady stream of energy for life on the earth. Since ancient times, human beings have been in awe of the sun, and in the history of human beings in different regions, there are legends about the sun, such as the story of the sun god in the West and the myth of Hou Yi shooting the sun in China. Of course, it is impossible for the ten suns in the Houyi to really exist, so did the two suns ever exist in the evolution of the solar system?

Some scientists say that the solar system used to be a galaxy of double stars, so why is there only one star left now?

Scientists have also studied the possibility of the existence of double stars, and have also put forward some opinions and arguments. One of the more plausible theories is that Jupiter once had the potential to develop into another star.

Scientists believe that at the beginning of the emergence of the solar system, everything was still in a state of chaos, and various planetary systems were developing in an extremely unstable state. Jupiter and the Sun were the first to be born, and both have the potential to evolve into stars. But the Sun develops faster and more stable, and its volume and weight are not comparable to those of Jupiter.

Other stars in the solar system are also developing, and with the continuous evolution of the volume and weight of each star, the gravitational attraction between objects has gradually increased, and different orbits have gradually formed.

At this time, Jupiter's orbit was still close to the Sun, but as time went on, Jupiter moved farther and farther away from the Sun. So far, it has been about the same place, but because of this, it has lost its original development environment, and it has absorbed less and less material, and it has slowly stopped its path to the star. If Jupiter had been in its original orbit, there is a high probability that the current solar system would be a binary star galaxy.

Of course, as life on Earth, we should be grateful. Because if it is really a binary star, there will be a big question mark over whether the earth can give birth to life. And because of the huge gravitational pull of the two stars, the stable cosmic environment that the Earth faces will no longer exist.

Due to the huge gravitational pull of the two stars, the stable cosmic environment facing the Earth will no longer exist, and the other star will run out of life and disappear from the universe, so now there is only one star left in the solar system.

Because the other star ran out of life and disappeared from the universe, there is now only one star left in the solar system.

It's because another star has disappeared and merged into the current sun, so there is only one perseverance in the solar system now.

The two civilizations will not end when the level of science and technology has not developed to a certain extent, just like the civilizations of Africa, the Americas, and Asia on the earth, there will be no collision before the discovery of the great navigation technology, but the collision will inevitably be accompanied by bloody conquest, and finally there will be exchanges with each other.

It must be the survival of the fittest, the reluctant are eliminated, the civilizations of the two races cannot coexist, and one civilization is destined to be destroyed by the other, so there is no possibility of coexistence.

If there is another planet in the solar system that has a biological civilization like the earth, then it will naturally become friends at the beginning of the period and often come and go with each other and even **. But over time, there will inevitably be a stronger side that will swallow up the other.

From the theory of astrophysics, it must exist, but the two planets have similar environments and different origins of life, and one will definitely be subject to the other.

Then it will be particularly cruel, and even more terrible things will happen. After all, there is no room for two tigers in one mountain, and both are places where civilization will take away one side, so human beings can face great disasters.