Super-Earths in The Universe

Have you ever thought of a planet like a planet in the planet? You know, there is nothing in the universe that resembles that planet. To some extent. As you know, astronomers have discovered that there is a planet in our galaxy. These planets are called ultra-earth, and some of them can even live. But so far there is no real evidence of the life of these planets, but scientists say that if liquid water may survive, it is certain that a certain Just using a method These planets are too many light years.

One of the brightest red dwarfs, K2-155, is about 200 light-years away from the Earth, and the three passing Super Earths are slightly larger than our own planet. Among the three ultra-planets, the outermost planet K 2 - 155 d has six times the radius of the Earth and may be located in the main star's residential area. Researchers found that based on the three-dimensional global climate simulation, K 2 - 155 d could form liquid water on its surface. Hirano said, "In our simulation, the composition of the atmosphere and the planet is thought to be similar to the Earth and can not be guaranteed," stated excitement and suppression.

The simulation by Shu Lin Li of Beijing University and his colleagues in China can explain the reason. They calculated what happens when the mass of the Earth is ten times the mass of the Earth. When it hits the atmosphere of the gigantic giant, the rocky body flattens like a pancake and then sticks into a huge center in about half an hour. Due to the energy of the collision, most of the cores may evaporate. Please pay attention to large errors in giant gas core measurement. If the final result of the forecast can not be fully controlled, how accurate is the simulation? Another problem here is to form a super earth without disrupting the entire interior of the solar system.

Compared to other planetary systems, the solar system stands out in the absence of a planet in the orbit of Mercury. The known solar system also lacks the super earth (Planet Nine may be a super earth known outside the solar system). Not so common, it has only a small rocky planet and a large gas giant, and other medium planets - rock and gas - are typical, so "gap" between the Earth and Neptune's size there is no. In addition, these super earth orbits are closer than Mercury. This leads to the assumption that all planetary systems start from many near planets and usually cause their sequence of collisions to cause lumps on several larger planets, but in the case of the solar system, And release.