The resource crisis on earth is a haze shrouded in the development of human society . The fundamental purpose of the development of astronautics is to find a second home for mankind to adapt to living.
After a long search, NASA found a planet called "twin brothers" . There are 385 days a year, with mountains and waters. According to the telescope data, this planet also has an atmosphere similar to the earth.
What is "-type earth planet "?
exoplanet is considered to be the closest planet on Earth. They also have hydrogen, helium, sulfur, etc. in the atmosphere on the planets are decomposed into hydrogen and helium oxygen (or oxygen and helium), and their surfaces have liquid water. The definition of terrestrial planets can allow us to better classify various celestial bodies, especially to conduct special research on possible planets.
The emergence of life is a necessity that can only be produced by accidental collisions. Among the billions of planets, the number of Earth-like planets is pitiful.
There is a major premise for generating life on the planet, and the planet must be in the habitable zone of the star. The relative position of planets and stars is the key to whether appropriate temperature and humidity can be generated. Because the conditions for life are extremely harsh, if the distance is too close and the water evaporates and the atmosphere is lost, it will become lava purgatory. If it is too far away from the star, it cannot accept enough radiation to cause dripping water to turn into ice. A warm ocean, a thick and warm atmosphere, only when planets have these two characteristics can they be considered a breeding ground for life.
is far from enough to be in the livable zone. This is only the primary condition for the generation of life. The formation of life is like the pyramid structure . livable zone can be regarded as the foundation of the pyramid.
Whether the planet has natural satellites is on the second layer of the base of the pyramid. The formation of life requires a very long period of evolution for billions of years . The satellite is more like the shield of a planet . It can resist most uninvited guests from outer space for the planet, and can also protect the fragile primary life from dying due to the impact of meteorite .
is limited by technical conditions. Now we can observe the number of planets in habitable zones. Only 54 of them can be confirmed. In 2015, NASA announced at a press conference that among the 54 planets in the habitable zone, only four planets can be identified as four earth-like planets, which is close to one-tenth of the proportion. This has increased the possibility of extraterrestrial life by several heavyweights. According to the existing estimated 500 million planets in the habitable zone, the number of earth-like planets will exceed 10 million.
The name of the Earth-like planet discovered this time is Kepler-452b. From a distance, its similarity to the earth can reach 90%. It itself is a rocky planet composed of silicate rocks with solid surfaces.
But due to the limitations of technology, people only have a vague concept of the planet inside, just like looking at flowers in the fog, and water doesn't know what kind of planet it is. It was not until 2015 that the more advanced telescope was put into use that people could finally make a clearer appearance. In a clear field of vision, Kepler-452b was recognized as an earth-like planet.
However, people's understanding of Kepler-452b is only clear. After calculation, the distance between Kepler-452b and the earth is 1400 light years. You should know that it only takes 8 minutes for to reach the earth from the sun.
The gravity and volume of this planet are several times that of the earth, which means that If human engineering equipment wants to achieve the movement effect on the earth here, it will consume several times the energy on the earth.The greenhouse effect formed by Kepler-452b atmosphere can also allow its atmospheric temperature to be controlled in a more comfortable range.
Since Kepler-452b was recognized as a terrestrial planet, there has never stopped a debate about him. Some experts believe that Kepler-452b, which is only five times the mass of Earth, is at best a mini Neptune .
No matter what category Kepler-452b belongs to in concept, there is no doubt that it has great similarities with the earth.
Kepler—452 b orbits around the star along an elliptical orbit on 385 Earth days, only 20 days more than the 365 days on Earth. This means that there will also be four seasons on the surface of Kepler-452b. Kepler-452b also has a star about the same size as the sun, although its star is 11% larger than the sun and 20% hotter than the sun. Among other stars and planets that are often tens of thousands or millions of times larger than the sun, Kepler-452b is simply the first choice for future human immigrants. The mountains of
Kepler-452b are rock formations from protruding ground formed during crust movement. With suitable temperature and geological structure, makes it extremely likely that there is liquid water on this planet, and water may also be the surface water source , similar to the rivers, lakes and seas of the earth. Water vapor evaporated from the ground gathers in the clouds to form a Kepler-452b-rich atmosphere. Below the atmosphere, a water system for self-circulation may have been formed.
All everything is observed and the conclusion indicates that the existence of life has a high possibility on Kepler-452b. After all, the primary life on the earth is born in water, and water is the mother of all things. If life really exists, it will prove that the habitable zone environment of Kepler-452b will be stable, and the probability of meteorites or other cosmic events is extremely low.
observations show that there is no harmful substance on the surface of Kepler-452b that can inhibit life. On the contrary, it is entirely possible that the surface of Kepler-452b is a landscape similar to that of the earth. Distance is everything critical, and we have no way to really figure out what is happening on this brother planet on Earth until there are more complex and advanced technologies.
No matter how fierce the dispute is, all data sources are speculations. After all, the distance from Earth to Kepler-452b is too far away, and humans cannot directly observe it with their naked eyes. Even if there is really smart life on Kepler-452b, or Kepler-452b is the first choice for future immigration, Kepler-452b can only be an out of reach of human beings before aerospace technology enters the next stage.
The process of finding life does not have to go far. Our neighbor Mars may be the best experimental site. Mars is the only planet in the solar system that is similar to Earth and has a greater gravity . There are constant signs that there is solid water on Mars. Now these solid water are buried on the surface. According to the detector's data, liquid water existed on the surface of Mars millions of years or more. After the iteration of aerospace technology, immigration to Mars may not be a dream.
No matter what, human beings are moving into space, and more secrets are waiting for human beings to uncover them little by little.
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