What is a Planet?

This seemingly simple question has no simple answer. Everyone knows that Earth, Mars, Jupiter are planets. At least they are now. Both Pluto and Ceres were thought to be planets once, but caused a scientific debate about how new discoveries express them - a hot debate that continues to this day. The International Astronomical Union adopted the latest planetary definition in 2006. It says that the earth must do three things.

It must be large enough so that its gravity can remove other similar sized objects around the sun 's orbit

The eyes of the solar system make it possible to explore the planets, those moons, asteroids, comets and spacecraft that you explored them from 1950 to 2050. Please use Curiosity Detector on Mars or Pluto with New Horizon Spaceship.

We wrote many interesting articles about gas giants in today's universe. Here is the planet Jupiter, the planet Saturn, the planet Uranus, the planet Neptune, what is the Jupiter planet? What is the solar system outer planet? What is a natural gas giant? Which planet has a ring?

So this is a problem - we are looking at nature. You see trees, animals, and waters. You can see planets, stars, and galaxies. We know that the sun is not a planet, because a star has a specific order and what the planet is. Again, apply the same principle to the new object we found. Alpha Centauri A is not a planetary principle, so we can be in a rational state. why? Order system hypermetropia. So, if you make hospitals, schools, shopping centers and consider beforehand according to certain principles, why eliminate the possibility of planets, stars, animals etc? Please follow the specific order we can understand) Can not be created by different existence or existence? I have three reasons:

Tera Forming is a process in which the biosphere of the earth changes according to technology and becomes suitable for life on the human being or the earth. The transformation of the whole world requires changing many factors about the Earth 's atmosphere and the Earth' s surface to respond to this life. There are four main factors that need to be addressed to achieve this process: atmospheric pressure, atmospheric pressure, temperature and liquid moisture content. Looking at Mars's current atmosphere and planetary characteristics, you can see that it is in the Earth's range. That atmosphere is only 4 mbar (about 1/200 of the earth), almost entirely composed of carbon dioxide. It does not have a stable liquid water source and only a short period of liquid water is formed before it is frozen in the soil or evaporated to a thin atmosphere. Mars is also very cold, the equilibrium temperature is only 215 K (-58 C).

As we said, on truly water-rich planets there may be a thin outer layer of liquid water. However, as you further descend to the earth, the pressure on the upper sea will be greater, compressing liquid water into solid high pressure ice. Ice is basically like the basement of the earth, and it is centered on harder materials. On Earth, paleontologists look for dynamic places on our fragile crust and find the first evidence of life. But in the inner solid world, will life develop?