2020-07-09

The study found that the outermost solar system needs 20 times the mass of the earth

By yqqlm yqqlm

The outermost part of our solar system is a strange place, where there are cold objects everywhere. Scientists at the University of Colorado Boulder conducted two new studies that may help explain one of the biggest mysteries of these distant planets of the solar system:Why do so many of them not orbit the sun as they should? These weird little stars, called”separated objects” by scientists, tilt and bend, orbiting from the plane of the solar system, and other unusual behaviors.

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Department of Astrophysics and Planetary Sciences, University of Colorado Boulder (APS) Assistant Professor Ann-Marie Madigan said:This space region is closer to us than the stars and other things in the Milky Way that can be well observed, but it is so for us unknown. Some researchers have suggested that it may be the cause of some large celestial bodies, such as an undiscovered planet, called”Planet 9″. But Medigen and Alexander Zdrik prefer to think about smaller issues.

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With detailed computer simulations, these separate objects may be Has disturbed their own orbits, and then pushed by the tiny gravitation accumulated over millions of years. These discoveries provide a tantalizing clue to what may be happening in this mysterious space area. The research team is the first to be able to replicate everything, including all the strange orbital anomalies that scientists have seen for many years. Their research results were published in the journal Astronomy. One of the major problems of studying the outer solar system is that it is too dark. Usually, the only way to observe these objects is:

Simulation of the outer solar system

Let the sunlight reflect off their surface and then return to the telescope on the earth. Obviously this reflection is too weak. Therefore, it is difficult to understand any situation of the outer solar system, so there is an assumption that it is empty, but this space is far from empty. Although most celestial bodies in the solar system tend to orbit the sun in flat circles, the orbit of these icy worlds may tilt like a seesaw. Many nebulae also tend to gather in an area of ​​the night sky, somewhat similar to a compass that only points.

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Researchers want to find out why, in order to do this , Resort to supercomputers to reconstruct or simulate the dynamics of the outer solar system in more detail than ever before. The study simulated something that might have existed outside the solar system, and added the influence of the gravity of giant planets like Jupiter. In the process, the research discovered something unusual:the simulated ice-like object began to orbit the sun as it normally would. But later, as time went on, they began to push each other.

20 times the mass of the earth

As a result, their orbits become more wobbly until they eventually resemble real objects. The most striking thing is that they are all done by themselves. Planets and asteroids don’t need a large planet to throw them into a circle. Individually, all gravitational interactions between these small objects are weak, but if there are enough numbers, this becomes very important. The researchers saw similar patterns in earlier research, but the latest results provide the most detailed evidence to date, and these findings are accompanied by a big prediction.

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In order to make”collective gravity“Theories come into play, and the outside of the solar system needed to contain a lot of material. The required celestial bodies add up to about 20 Earth masses, which is theoretically possible, but it will definitely conflict with what some people think. In any case, scientists should soon discover that a new telescope called Vera C. Rubin Observatory is scheduled to be launched in Chile in 2022 and will begin to bring new dawn to this unknown space. The latest fascination with the outer solar system is largely related to technological progress, so the latest generation of telescopes are needed to observe these objects.

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Brocade Park|Research/From:University of Colorado Boulder

Reference periodical”Astronomy”

DOI:10.3847/1538-3881/ab962f

Bo Science Park|Science, Science and Technology, Scientific Research, Popular Science

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