The Craziest and Most Rhythmic Star System Found Near Earth

This is definitely the most beautiful law of the universe. Scientists have discovered a unique stellar system only 88 light-years away from the earth. This galaxy has 6 planets, and its orbital period is as accurate as a music rhythm: from the inside out, the next orbital period is always about 1.5 times the previous one, forming a 3: 2 resonance period. If it is placed in our solar system then If Mercury orbits the sun in 100 days, then Venus is 150 days, Earth's year is 225 days, Mars is 338 days, Jupiter 506 days, Saturn 759 days ...

However, this star system is extremely crazy! Its number is HD 158259. The main star is slightly larger than our Sun, but all planets are larger than our Earth. The smallest one is equivalent to Super Earth, and the other five are Mini Neptune. Scientists have monitored this stellar system for seven years and discovered this shockingly extraordinary phenomenon. But this is not the craziest, the craziest thing is, these planets are very close to HD 158259, very close, very very close! The nearest one is the smallest one, but the mass is also twice that of the earth, the orbital period is only 2.17 days-it is simply running crazy, you can imagine that the earth has only two days a year, 2.17 days will be crazy around the sun Turn around? The following are 3.4 days, 5.2 days, 7.9 days, 12 days and 17.4 days, and the cycle ratio of the previous one is 1.57, 1.51, 1.53, 1.51 and 1.44, which is crazy and perfect!

So, how exactly does this phenomenon happen? The researchers believe that this indicates that the planets orbiting the stars are not formed at their current positions. Their planetary embryos are formed away from the stars, and then they grow inward in the protoplanetary disk and slowly form in the entire system. A series of orbital resonances. Once the gas in the protoplanetary disk is completely cleared, it will destroy the orbital resonance; in addition, the changes in the mass of stars and planets are also considered to be the possible causes of resonance rupture. This is what we saw on HD 158259, they are not strictly in accordance with the 3: 2 orbit cycle, but there are slight differences. Does this mean that in the earlier period of this galaxy, the orbital period of these planets was strictly increased by 1.5 times?

The seemingly complicated universe space is sometimes so simple, all the cosmic phenomena actually operate within the scope of mathematics, so the all-encompassing phrase "all places in the universe follow the same physical laws" actually allows us to recognize The entire universe far away, rather than a shallow question from many people: Why are you so far away that you do n’t see it in person? By what reason, it is very simple, because the physical laws of this universe are the same, we can accurately infer what is happening in other places. The universe can be recognized, not unknowable, otherwise what is the meaning of our human thinking?

The research was published in the "Astronomy & Astrophysics" on April 16.

Reference:
Astronomy & Astrophysics: The SOPHIE search for northern extrasolar planets XVI. HD 158259: A compact planetary system in a near-3: 2 mean motion resonance chain