The physical evidence of planet nine is gone. But maybe the search continues someday.

The physical evidence of planet nine is gone. But maybe the search continues someday. 

The ninth planet does not exist or there is no physical evidence of that thing. But the fact is that the search for that thing might continue in the future. If we are thinking about the ninth planet it might be so far away from our sun, that it has just flown away from our solar system. Or maybe the ninth planet was some kind of rogue planet or some other object, that passed our solar system and caused the errors in trajectories of Neptune. There are millions of possibilities, what might cause those errors or anomalies.

The measure systems like telescopes might be in the wrong position, the astronomer might forget the movement of Earth. There might be a thicker area in the Kuiper Belt. Or it might be some kind of rogue planet. But as you see we must keep our minds open. The ninth planet is one of the biggest mysteries in history. 

And that makes it so interesting. One version of the theories about "planet nine" is that the thing is a hoax, what is told for making some astronomers time to make the work for code-breaking or some military equipment. We know that things like diving bells and cannons are interesting about the kings and military. So that kind of work might be covered for searching the "unknown planet". 

If we are thinking about things like Oumuamua the asteroid from some other solar system, we must realize that they can be everything. I believe that Oumuamua was the rogue asteroid, that flew away from some solar system because of some cosmic catastrophe. Maybe the star that that object orbited erupted, and then the small asteroid flew away. 

And then it visited our solar system. But I never visited that asteroid, and there is the possibility that it's something else. Some astronomer once said that we should look for alien probes from the universe. So if aliens send their probe to the universe, there is the possibility that the batteries of that system end someday. So the aliens might use regular nuclear rectors, whose operational time is about five years to 70 years. 

When some person writes things against the main flow and says that Oumuamua was some kind of alien spaceship, we might ask why it cannot be the alien spaceship? Because it didn't contact us is normally the answer. The fact is that there is the possibility that even if Oumuamua is some kind of probe, it might be dead. But who knows the answer. 

So if we are making theories about the alien races, they must make similar research developing process what we are making. And they must advance to the level, that they can make some interstellar probes. We can make interstellar probes, that travel to other stars in 30 000 years. And so do aliens, if it has the same technological level as us. Before humans or aliens can make interstellar probes what has some kind of benefit to us or them the required technological level must be high enough. But also the motivation for that kind of mission must be high enough, that the super-probe will be accomplished. 

In theories, the advanced civilization might be curious, and send the probes on a one-way trip to their solar systems. And then those probes will go to interstellar space. Just like Voyager and other probes are doing. The power source of the system will be lost its fuel, and the "dead probe" will continue its journey. 

So before the interstellar probes, what are sending data to their manufacturers can be done the technology must be advanced enough. And the road to those probes goes through Pioneer and Voyager type of primitive probes. And from the first interstellar probes is a long journey to probes, what can send the samples to their sender. 

The first interstellar probes might be hypothetical Daedalus-type systems, that are using internal fuel. But then the road goes from Bussard-ramjets to the antimatter ramjets, which are making the antimatter from the material, what it pulls through the ion channel. In antimaterial ramjets, the magnetic fields will turn the protons and electrons spin turn to the opposite, and then the system will use annihilation for making the jet, which allows the craft to travel near the speed of light. 

https://www.cnet.com/news/any-evidence-for-planet-nine-is-gone-scientists-dispute-probability-of-mystery-planet/

https://www.forbes.com/sites/ericmack/2021/01/04/a-harvard-astronomer-is-more-confident-than-ever-that-an-alien-probe-visited-us-in-2017/

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

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

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