Fortunately, the predicted landing points are mostly in the ocean and areas with relatively low population density, so the risk is still very controllable.

If it falls in an urban area, it will be necessary to organize the evacuation of personnel.

It will cause many chain reactions and even cause some secondary harm.

After sa released this news.

It immediately aroused heated discussion around the world.

"Holy crap, you actually predicted such an accurate landing point? This is an out-of-control satellite debris!"

"Didn't NASA predict the landing point of satellite debris? Can we really predict it so accurately?"

"If you don't dare to call it accurately, you probably won't send it out. This is a major matter related to the safety of people all over the world. I hope no one will be affected by this."

"I took a look at those locations, and it shouldn't be a big problem. Places with people are not considered gathering areas, and the possibility of hitting people is very small. However, having an early warning can definitely ensure people's safety to a greater extent. Safety."

at the same time.

Inside NASA, employees are discussing this matter.

"Can SA really predict the landing points of these satellite debris? This is incredible!"

In NASA's initial announcement, the predicted location of satellite debris was so exaggerated that it would cover almost half of the earth.

Such large-scale predictions will not have much effect on people's early warning.

Although SA's prediction is later than NASA's, such accuracy is indeed too high.

At this time, they are still paying attention to the movement trajectories of these satellite fragments and analyzing their subsequent movements.

At this time, a NASA employee suddenly said:

"According to the current trend, this largest satellite fragment may indeed land near this location!"

During the operation of satellite debris, their mass is continuously reduced due to constant friction with the atmosphere.

Prediction of their trajectories is a very complicated matter.

And if the satellite fragments are large enough, the impact will be smaller.

After hearing what this employee said, everyone turned their attention.

"Yes, their predictions are indeed very accurate. The current capabilities of the China Space Administration are actually so powerful..."

At this time, NASA staff couldn't help but fall into a mood of doubting life.

They have always believed that they are the strongest existence in the world's aerospace system.

Even the aerospace systems of other countries are decades behind theirs.

But this time, they really couldn't figure out how SA completed the prediction of the landing points of these satellite debris.

After this.

The first satellite fragment fell on the surface of the earth.

The aerospace systems of various countries are respectively detecting the landing points of satellite debris.

"The impact point of this satellite fragment is only about 300 meters different from Professor Xu's previous prediction!"

At this time, the staff around Xu You said.

"Oh my god, 300 meters! A normal spacecraft landing mission can only have this kind of accuracy, right?"

When a normal spacecraft lands, its speed will be relatively much smaller, and all data will be more detailed.

It will be much easier to predict the landing point.

And predict the impact point of a satellite debris that is in an out-of-control state and moves irregularly.

An error of 300 meters is obviously a very incredible data.

"300 meters... the error is indeed relatively close to what I expected." Xu Youxin said.

Under incomplete conditions, such errors are already close to the limit.

According to statistics from the space agency, the landing point of each subsequent satellite fragment is very close to Xu You's predicted location, and the errors are all controlled within one kilometer.

Compared with this result, Xu You was more concerned about whether these satellite fragments had hurt some innocent people.

Fortunately, because most of these satellite debris landed in uninhabited areas, and with advance warning, no one was injured or killed.

Of course, there were indeed some dangerous moments during this period.

A satellite fragment weighing dozens of kilograms fell only about fifty meters away from a private house.

Fortunately, after receiving the warning notice, they immediately evacuated to a location several kilometers away.

If you don't evacuate in time, you will be scared to death even if you are not hit by satellite debris.

Finally, when all the satellite debris has settled, everyone can finally let go of their worries.

According to the detection of the impact points of these satellite debris by the aerospace systems of various countries, it has been proved that SA's prediction is very accurate.

"Fortunately, no one was injured in the end. Our space agency is really powerful. We can predict things so accurately that even NASA cannot predict."

"It is said that a satellite fragment landed near a private house. Fortunately, they evacuated in advance. If they had not evacuated, there might really have been a serious accident."

"Don't say whether it hit or not, I was scared to death. But there is no clear explanation as to what caused this accident."

At this time, NASA Director Robert was discussing this matter with several space agency experts.

"Why can SA predict the landing point of satellite debris so accurately? We actually gave an outrageous range from 58 degrees north latitude to 58 degrees south latitude. This is really a joke for the whole world!"

The gap between the two prediction ranges is already several orders of magnitude different.

"Director Robert, this kind of prediction is indeed very difficult. There are too many influencing factors, and a lot of data is unavailable. Unless..."

"Unless what?" Robert asked with a frown.

"Unless they install a beacon on the satellite, which can monitor various data about the satellite in real time. Of course, they must also ensure that there is a beacon on each satellite fragment."

After hearing this, Robert sneered:

"If you say this, you don't believe it yourself, right?"

"Yes, just like we still can't believe it at this time, they really accurately predicted the landing point of these satellite debris."

"I don't care so much. Since they can do it, we must do it too. They have always been our followers and we must not let them get in front of us."

"Director Robert, just relying on these landing points, it is still difficult for us to analyze how they determined the landing points of these satellite debris. It is like a difficult problem, only one answer is given, and there is no solution process.

.We'd better get their complete predictive model if we can."
Chapter completed!