New discovery of exoplanet: 26 light-years away from Earth, discover a rocky planet?
New exoplanet discovery
In ancient Greek mythology, there is a story about a man named Icarus who was stranded on the island of Crete. In order to better escape from here, he had an idea, collected a lot of feathers, and then glued them together with wax, made wings, and tried to escape from Crete by flying. But because he could fly too high and too close to the sun, the wax was baked and the feathers loosened, and he fell into the ocean and drowned.
This story tells everyone that although the sun is the foundation of all things in the world, it cannot be too close, otherwise it will be a dead end.
In space, some planets do not understand this big truth. As the so-called "biased towards the tiger mountain, biased towards the tiger mountain", they are "knowing that the stars are hot, and they prefer the waves of the stars".
At this stage, most of the "wave" planets that biologists have discovered are all gas planets, some of which are similar to Neptune, some are close to Jupiter, and even larger than Jupiter. , they are each classified as hot Neptune and hot Jupiter.
Among the planets in the solar system, Mercury is the closest to the sunlight, and its perihelion is about 46 million kilometers. Looking around the entire universe, there are countless planets smaller than the orbit of Mercury, which continue to update the record of people's cognitive ability. As for the planets discovered at this stage that are close to the host star, the record it has created may be difficult to improve except for itself.
This star was formed by NASA and the European Space Agency during an eight-month observation period from 2015 to 2016, using 12 intelligent robotic telescopes certified by the Rosalesnar Observatory in Australia. It was excavated by the Next Generation Transit Survey (NGTS) instrument and named it NGTS-10b.
According to observations, the host star of NGTS-10b is an orange dwarf star whose mass and volume are only about 70% of that of sunlight. Although the host star is smaller than the sun's light, NGTS-10b has made their planet 1.2 times the diameter and 2.1 times the mass of Jupiter.
LeBron James McCormack, a key scholar of NGTS-10b and a scientist at the University of Warwick in the United States, said in detail that the distance between NGTS-10b and the host star is only 1.4° of the distance between the sun and the earth, which is more than 2.1 million kilometers. According to the detailed introduction to NGTS-10, the diameter of this star is only about 1 million kilometers. In other words, the distance between NGTS-10b and the host star is only twice the diameter of the host star. To understand, between Mercury and the sun, you can learn to put down 22 suns side by side!
According to Kepler's basic laws of planets, we can understand that the revolution period of NGTS-10b must also be shockingly short. Biologists introduced in detail that it takes only 18.4 hours to revolve around the star closely (naturally, those who watched my [Scientific Research Some Reasons] channel should understand that in fact, the cycle time should be observed first, and then the orbital radius should be calculated. ). In other words, its year is shorter than a day on Earth...
However, this record of NGTS-10b is only in the hot Jupiter team.
At this stage, the exoplanet with the shortest rotation time unearthed by biologists is K2-137b. It is a planet with a diameter of 90° on Earth, the host star is a red dwarf star, and its orbital period is even only 4.3 hours. This is the legend... One day on the ground, 5 years in the sky...
Embarrassingly, despite being so close to its host star, NGTS-10b can't even compete for a record of its surface temperature. Because the host star is "impossible", its surface temperature is only 1380 ℃. At this stage, the most popular exoplanet is KELT-9b, whose surface temperature reaches 4327°C, and even lead will volatilize into gas there.
In fact, in this area, NGTS-10b is very risky. Due to the strong attraction of the host star, it cannot exist smoothly. After all, according to the calculation, the Roche limit is about more than 1.5 million kilometers away from the NGTS-10, and the NGTS-10b has already walked on the edge of "purgatory"!
According to biologists' simulation analysis, NGTS-10b has slowly approached the host star. Simulation data shows that in another 10 years, the revolution period of NGTS-10b will also be reduced by 7 seconds. In about 38 million years, it may fall into its own star, combining the two into one. Naturally, the data and information of the simulation are not necessarily accurate. It may be that its service life is much shorter than this. It is also very likely that it will exist smoothly here in some unknown way, which must be further observed.
Experts said that they would like to use the best James Webb Space Telescope to carefully observe this planet and learn about that terrifying but very unique world, which is very helpful for everyone to master the evolution of planets, the law of universal gravitation between planets and stars, etc. . However, the James Webb Space Telescope could not take off due to budget problems, and the launch time was pushed back and forth.
Therefore, NASA experts are also very impatient, and some people even complained: Friends, if you are not God, maybe this planet will go to hell...
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tannie rusty
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