The best candidate for planet nine

Instead of being called the search for planet number nine, it should be called the search for an explanation for the alterations in the orbits of objects that are beyond Neptune or trans-Neptunian objects. By trans-Neptunian objects I mean dwarf planets and billions of inactive comets, inactive comets that visually if we were close to them would seem like asteroids but they are basically made up of ice of various elements, frozen elements and also some rocks and some dust, but basically frozen items. If they approached the inner solar system, they would shine like comets with their tail and with all the brilliance of a comet. There are also other strange mysteries, such as between the Kuiper belt, which is an area where there are many comets, and the Oort cloud, which is immense.

But between the Kuiper belt and the Oort cloud there is a void where no objects are found. In recent years, theories have emerged that say it could be that there is a planet there that has cleared that void between the Kuiper belt and the Oort cloud. There are several anomalies that would need to be explained. There are several theories apart from planet number nine. One would be the existence of a primordial black hole. A primordial black hole is a theoretical object that we have not yet found. It also has some very strange characteristics. A primordial black hole would be a very old object, it would be one of the objects, it would be the oldest object in the universe. According to the theory, all primordial black holes were created during the Big Bang. The smaller ones have dissolved a long time ago, but there would still be some left, those that have been saved if they had not fallen into supermassive black holes, which according to another theory would explain the rapid growth of supermassive black holes. Some were already giants in the early days of the existence of the universe, but some primordial black holes may remain with the mass of a planet wandering through space or even trapped by the gravity of a star in this case the sun, it is a somewhat strange theory, but plausible it is within the other options

Other astronomers defend that these anomalies in the orbits of these trans-Neptunian objects are due to the passage near the solar system of other stars, stars that passed nearby in the past and that lately we are beginning to see that it was not as abnormal as was believed in the last century, and it is not so impossible because of what we are discovering lately, for example, the next star that is coming towards the solar system is Gliese 710, currently it is about 20 light years away, but within 1,300,000 years will be just one light year away. The most pessimistic calculate that it will even be much closer, at 0.3 light years, it is a smaller star than the sun but it still has a quite respectable mass, it has half the mass of the sun, it is assumed that it also has a cloud of comets, an Oort cloud, so even if its cloud passes one light year away, its cloud of comets and ours will come into contact, this will alter the orbits of many comets that will end up rushing some, but some much more than normal towards the planetary solar system, that is, a risk of mass extinction literally.

The most popular theory among astronomers is that all these anomalies are due to the existence of a planet that altered the orbits of these objects and that peacefully orbits the sun, but very far away, they call that planet planet number nine. The main theory is that planet 9, if it exists, could not form together with the rest of the planets but that in the initial chaos of the formation of the solar system it was expelled to an orbit very far from the sun, it would also be possible that it had been captured. If it was around the orbit of a star, it is possible, if it was a wandering planet it is more complicated, wandering planets are those that travel without being tied to a star, more and more are being discovered and it seems that they are very numerous but the problem is that wandering planets go quite fast and for a wandering planet to be captured is complicated, it must enter at a certain speed and at a certain angle, otherwise it would simply pass by. Neptune is currently planet number eight, so if another is discovered it would be number nine and it would be a normal planet, it would not be a strange thing, it would be a normal planet as far as we know but that orbits the sun from a very distant distance, it would be an amazing discovery, it would also be one of those discoveries that automatically whoever makes it or the team of researchers that makes it would win the automatic Nobel Prize. Neptune, the last planet in the solar system, was discovered 179 years ago and Nepuno was discovered thanks to the anomalies that astronomers detected in the orbit of Uranus, so it is logical to think that if we now detect anomalies in the orbits of dwarf planets and other objects beyond Neptune, it is because of the existence of a planet that we have not yet discovered.