What is the super earth discovered by scientists and why is it called this name?

You may have seen the news in many places: "A super earth was found XX light years away, and the environment was so bad that scientists thought it impossible to exist." It is said to be a super earth. Why can't there be life? After all, what does "super" mean here? Today, let's take a look at this problem.

English nominees come out and say that English names are actually very casual. For example, the English name of "artificial satellite" is artificial satellite, so satellite means satellite? In that case, how do you say "Europa" in English? Is it the second satellite of Jupiter? No, in English, it will be directly called Europa.

Europa is a satellite of Jupiter. Europa is a satellite of Jupiter? No, satellite means artificial satellite. If it is naturally formed, the word used is "month".

Some students may ask, isn't Moon the moon? Yes, it is the moon, which means the moon, but it can also express the meaning of satellite. That is to say, if we translate "Europa is a satellite of Jupiter", we can never translate it into "Europa is a satellite of Jupiter" (both Europa and Jupiter are the names of mythical figures).

You see, because the moon is the satellite of the earth, the word is directly applied to the satellites of other planets, so there are countless "moons" in the English world, and the "moons" in the western sky are no longer that unique cutie. ...

In the same way, the word Earth originally meant mud or mud in English. Later, after discovering that the earth is a sphere, it directly expanded its meaning and became the meaning of the earth. You see, although we also call it "ground" in Chinese, at least a "ball" is added, but they are very casual and borrow it directly.

As long as all rocky planets are called "earth", according to the urine of westerners, the meaning of this word will naturally not stop expanding outward-in astronomy, all rocky planets are called earth in English, so the original intention of this "super earth" is not super earth, but super rocky planet (also called earth-like planet).

What does this "super" mean? It doesn't mean anything, just as the Japanese especially like words like "righteousness" and "super killing", English also likes simple and rude superposition. The earth is so big that it is called the earth, and the rocky planet whose mass is about 5~ 10 times that of the earth is called the super earth. What's bigger? It's called the giant earth.

In other words, this "super earth" is only a rough comparison of the mass and shape of the earth, and has nothing to do with what we think of as "the characteristics of the earth". There is neither life nor pleasant environment, let alone a similar appearance to the earth. Most of these planets have quite unfriendly environments to life, because the probability of obtaining an environment more suitable for life is very low.

What is a rocky planet, so there is still a question that has not been explained clearly-what is a rocky planet?

If we carefully observe the proportion of the eight planets, we will obviously find that they are divided into two camps-a "giant planet team" composed of wood, earth and sea? An "ordinary planetary team" composed of water, gold and fire.

So why is it so different in size? Because giant planets are gas planets, their main components are hydrogen and helium. For example, Jupiter is composed of 75% hydrogen and 25% helium, and other elements add up to less than 1%.

The elemental composition of the universe is about 90% hydrogen and 8% helium, and other elements account for a little more than 1%, which means that the elements of Jupiter are not much different from the average value of the universe. This is because the solar system was a huge air mass at the beginning of its formation, and most substances were concentrated in the center by gravity, that is, the sun. A very small amount of dust and gas with very fast initial angular velocity has been completed before falling into the middle of the sun, so these substances constitute planets.

The dust closer to the sun is the "four small" planets in front of us. Because the gravity is too small and too close to the sun, the violent solar wind strips all the hydrogen around the orbit and on the surface of the planet, so these planets will expose solid solid substances, that is, rocky planets. Outer planets can capture all the hydrogen atoms in orbit. The more they capture, the greater the convection in the planet, which can form a stronger magnetic field to protect the gas from escaping. Therefore, they are all gas giants with a very small heavy nuclear element.

Gaseous planets can never produce life. It is extremely short of elements necessary for life, and it is usually very cold because it is too far away from the stars. The surface temperature of Jupiter, the closest to the sun, is only-148℃, and Neptune, the farthest, has become a unique "ice giant" in the solar system because of its low temperature.

Therefore, the exploration of extraterrestrial life must of course begin with the search for rocky planets, but now we already know that it is too early to be happy to hear the discovery of "super earth", and the word "life" is still unclear.