The hunt for Planet 9.

The hunt for hypothetical Planet 9, the mysterious object that affects Neptune's and Unranus' orbital trajectories, carries on. The problem with planet 9 is that its temperature can be lower than the plasma temperature in the solar system. There are many theories about that planet, and some suggest that hypothetical Planet 9 is a black hole or piece of dark matter. The problem is that the X-rays could uncover a black hole. 

But otherwise, the massive virtual redshift means. that the black hole can be closer than it seems. The massive virtual redshift means that the black hole's massive gravity stretches light waves. So that means the black hole hypothesis can be right. But when we think about the possibility. The hypothetical Planet 9 exists in the form of a planet, there is a point where it's very hard to see. 

That point is just outside the heliopause, the impact point where plasma flows. That comes from the sun hitting the interstellar plasma. That thing is the plasma bubble around the solar system. If the object orbits near this impact zone, but outside it its temperature can be below the solar system's temperature. That means its position can be just outside the theorized Oort Cloud near Heliopause. Or if Oort Cloud does not exist The position of Planet 9 can be vertically to the Kuiper Belt layer. 

If Planet 9's trajectory is erect in comparison to the Kuiper Belt that planet is hard to see by following the Kuiper Belt's object's trajectories. If researchers can confirm the Oort Cloud and follow its particle trajectories, that thing can uncover Planet 9, because its gravity affects those particle trajectories. But the problem is that those particles are hard to see, and that method requires that the Oort Cloud the ball-shaped structure around the solar system exists. 

The temperature of this hypothetical Planet 9 must be only degrees or a couple of degrees lower than the temperature outside the solar system. The plasma wave that surrounds the solar system reflects radiation back inside it. The temperature in Oort Cloud is degrees or two higher than the cosmic background. 

Planet 9 can capture a thin plasma cloud around it. The plasma cloud's size can be huge if we compare that with the planet. And if the plasma cloud temperature is higher than the planet, the infrared systems see plasma, but not a planet. The surface area of the plasma is huge, and it can easily cover the planet below its radiation. The temperature in that cloud can be less than degrees higher than the planet, but they both have temperatures near the cosmic background and that makes it very hard to detect the planet. In this hypothesis, the Planet 9 temperature is 3,5 to less than 10 K, and its plasma cloud temperature is less than 5 degrees higher. 

Planet 9 can have a thin atmosphere. The atmosphere can consist of helium and other gasses. The planet captures those atoms and ions from its environment. That gas is in a quantum state, and the distance of those particles can be even centimeter class. This kind of quantum gas can have a higher temperature than the planet's surface. And that means Planet 9 might look like a gas cloud rather than a planet. So at long distances, we could see that sparse plasma cloud, but that plasma covers the planet's weak infrared radiation. 

https://astrobiology.nasa.gov/news/caltech-researchers-find-evidence-of-a-real-ninth-planet/

https://www.newsweek.com/planet-nine-solar-system-evidence-scientists-1894718

https://phys.org/news/2024-02-planet.html

https://www.planetary.org/articles/is-planet-x-planet-nine-real

https://www.sciencealert.com/strongest-statistical-evidence-yet-for-planet-nine-has-been-found-scientist-says

https://science.nasa.gov/solar-system/planet-x

https://en.wikipedia.org/wiki/Kuiper_belt

https://en.wikipedia.org/wiki/Oort_cloud