In fact, many astronomers began to doubt the existence of Pluto at that time, and it was somewhat related to the discovery of Neptune.
After the initial discovery of Uranus, people found that its orbit calculation data was obviously inconsistent with the observation results, so it was speculated that the existence of a massive celestial body affected the orbit of Uranus.
Later, after mathematical calculations, yes, calculations based solely on observational data, Adams and Le Verrier directly gave the orbital parameters of the new planet, and then they discovered Neptune.
This is quite magical!
That's why Neptune is called the planet under the pen.
But the current situation is that even if Neptune is added, it is still not enough to cause such a big change in Uranus's orbit. There must be other celestial bodies perturbing Uranus.
So many people want to find this mysterious planet.
As early as eight years ago, in 1894, Lowell, an American businessman, built a private observatory with the purpose of searching for this mysterious planet. He later gave the plan a name: "Planet X Project."
X means unknown, that is, looking for the unknown ninth planet.
But until his death, he never saw the discovery of Pluto, because it was so difficult to find! The difficulty of finding a new planet in the vast sky is really like finding a needle in a haystack, and it is no exaggeration at all.
In fact, Pluto taken by the Hubble Telescope in later generations is also very blurry, mainly because it is too small, just like we can see high-rise buildings far away, but we may not necessarily see ants a few meters away.
But Li Yu has his own advantages!
After Pluto was removed from the list, Li Yu once calculated Pluto's orbit and period in detail out of academic needs and personal hobbies, which was considered a small homework for him.
He was so familiar with the data that he just had to take a moment to find it in a specific location and snap a photo.
Although the data was clear, Li Yu still spent several nights searching for Pluto. It was not until the night of the fourth day that he excitedly took two photos and made the negatives with a special astronomical comparator.
It can be clearly contrasted above that the position of a star has changed.
That’s it!
Found it!
Li Yu was so excited that he didn't sleep all night. After developing the photos, he copied and recorded the data overnight, and then wrote a paper on the discovery of Pluto.
The paper does not need to be very long. He only needs to put in the two decisive photos, and then give the orbital parameters and the expected location. By then, telescopes around the world will be focused on that patch of sky.
Let us gaze at the night sky together!
And Li Yu knew very well why Pluto was removed from the list, so he attached some predictions about the Kuiper Belt. Of course, it can’t be called the Kuiper Belt yet. Li Yu named it the outer planet belt, which is about 30 kilometers away from the sun.
Forty or fifty astronomical units. It far exceeded people's understanding of the size of the solar system at that time.
The next day, despite not sleeping all night, Li Yu was still in high spirits and not sleepy at all, as if he had drank ten cans of Red Bull.
After calculating and organizing until the afternoon, he finally transcribed the paper. After checking that it was correct, he rushed to the Royal Society.
President Huggins was enjoying a cup of afternoon tea. As soon as he took a sip, he saw Li Yu coming in. His eyes were bloodshot but his expression was radiant, which shocked him a little.
Huggins pointed to the black tea in his hand: "Sorry, what I drank today was Assam black tea, not Keemun black tea produced in China. Do you want to drink some?"
“I don’t drink Assam milk tea from Asan!”
Li Yu put the manuscript in his hand in front of President Huggins, "Look at this."
President Huggins spit out a sip of black tea when he saw the name of the paper. He picked up the paper excitedly and read a little tremblingly: "On the discovery and orbital parameters of new planets beyond Neptune! You, you, you! You are outside Neptune."
New planet discovered?”
Li Yu said calmly: "That's right."
President Huggins quickly flipped through the paper. He was an astronomer himself, and he quickly realized that the calculations were always rigorous, concise and beautiful. All that was left was a verification!
President Huggins shouted loudly: "Joelson, please notify Lord Kelvin immediately and ask him to go to the Royal Observatory in Greenwich to find me immediately!"
Seeing the president's excitement, Joelson asked doubtfully: "Why don't you wait for the Lord to come and come with us? He likes to ride in the car very much."
"It's too late!" Huggins was a little restless now.
Joelson said: "But people from the Navy Department will come to have a meeting soon to discuss the synchronization calibration of timing at sea."
Huggins waved his hand: "I've pushed it all! This matter can be done tomorrow! Now I want to set off immediately!"
They hurried out, but found that the driver was not there at the moment. Huggins didn't care whether he was a gentleman or not, so he leaned over to crank the engine. Li Yu quickly went over and cranked the tractor himself, oh no, it was a car.
President Huggins sat in the driver's seat and said, "I'm driving today! I know the road well!"
"Sit tight!" He stepped on the accelerator to the bottom, and then performed a breathtaking "Fast and Furious" performance on the streets of London at a speed of 18 kilometers per hour.
The speed of this car is so "exciting"!
Huggins drove the car directly to the entrance of the Greenwich Observatory. He got out of the car and went straight to the director's office, regardless of whether it was pressing down on the lawn.
"Christie! Big life is coming!"
Christie, the director of the Observatory, put on his glasses and asked calmly with a gentlemanly look on his face: "Mr. President, what kind of work do you do?"
Huggins slapped Li Yu's paper on the table and said, "Observe immediately! The ninth planet!"
Although Li Yu had clearly stated in the article that it could not be called the ninth planet, Huggins was obviously too excited to care about anything else.
After Christie finished reading the paper, he felt that his whole body was stiff, and his gentlemanly demeanor was gone: "This! This! This!" He even stuttered a little, "How is this possible!"
But the orbital parameters were clearly given in the paper, which made people unable to believe it. He felt his throat was a little dry, this discovery was too big!
If the planet mentioned in the article does exist, it would be big news that would shock the whole world.
In fact, in the time and space where Li Yu once lived, when Pluto was discovered in 1930, it did cause a sensation all over the world.
This feeling is like having an extra brother in the family, how can it not be exciting!
It's not difficult to verify. You only need to use the huge telescope at Greenwich Observatory after dark.
Without further ado, Christie immediately adjusted the telescope position according to the coordinates given by Li Yu, and waited for the night to fall!
At this time, Lord Kelvin also rushed to the Greenwich Observatory, patted his clothes and said: "President Huggins, if you call me to the Observatory in such a hurry, you can't be the one who refuses to accept the bet, right? I can tell you, if it is still blue this time,
Move, I want to add to 20 boxes of cigars."
President Huggins said excitedly: "Don't say 20 boxes, I would also like 100 boxes! Take a look!"
President Huggins handed the paper to Kelvin, "Maybe we will see the ninth planet in the solar system tonight!"
"What!" Lord Kelvin was stunned, "The ninth planet?"
"Yes, it's definitely not an asteroid, it's a real planet!"
After Lord Kelvin finished reading the paper, the cigar in his mouth fell to the ground with a bang, and he exclaimed: "Oh my god! YuLi! You're an Amazing boy!"