Du Xingyu returned home. As soon as he returned home, he was taken into the National Academy of Sciences.

    Here, a group of bigwigs and academicians of the Academy of sciences are waiting for him.

    "Academician Du, there is only one thing for us to gather here." one of them said, "that is, if the ''Death Star'' really appears, how should we deal with it?"

    "We have experts and scholars in various fields, but we are really not as good as you in space exploration technology."

    "You can speak freely. No matter what suggestion it is, we will pay attention to it!"

    Du Xingyu sat in the position prepared for himself and said slowly, "I do have a plan, but we can''t solve it!"

    "What about the power of the whole country?"

    Du Xingyu still shook his head and said, "we only have 20 years, strictly speaking, 19 years, because we want to change the orbit of the Death Star before it enters the earth''s orbit to minimize the risk!"

    "In such a short time, only when all mankind works together can we have a chance!"

    "Introduce your plan!"

    "Good!" Du Xingyu began to talk about his plan. The more they listened, the more frightened they were.

    In the end, the academicians and experts were amazed.

    "It''s such a magnificent project. You''re right. We can''t complete it alone in 19 years."

    "Mankind must unite, and we Huaxia should propose to the world!"

    "This is an unprecedented project in human history... This idea is too bold!"

    "Although the task is arduous, as long as we have the opportunity to deal with it, we don''t have to fall into confusion and despair!"

    "Now, let''s demonstrate this scheme!" a group of top Chinese scientists began to demonstrate Du Xingyu''s idea, and modified and supplemented it.

    ……

    When they argued, the outside world was almost crazy.

    Many people were sleeping last night. As soon as they woke up during the day, they saw relevant reports.

    "What happened, I just slept, the end of the world?" countless people asked what had happened on the Internet.

    "This is what Du Xingyu said last night?" Du Xingyu''s alma mater, teachers and students of Aeronautical University, were stunned when they saw the online video!

    "It''s true! The classes of several old professors stopped today. I heard that they were picked up by the military!" the teachers whispered.

    "Although I have always believed Du Xingyu, what he said is too terrible?" the students are also talking.

    "Many websites have stopped commenting on this matter!"

    "Wait, he said he could observe it on the evening of the 13th, and then we''ll know!"

    "Even if it is the end of the world, we may not have no way."

    "There are twenty years left, aren''t there? You should eat and drink."

    "Rumors, rumors, must be rumors!" no matter how fierce the online quarrel is, real life continues. With the efforts of all aspects, the society is still running normally.

    The time finally came on December 13. At 10 p.m. Beijing time, Du Xingyu predicted that the "Death Star" would appear soon.

    Although the time difference around the world is different, astronomical observers around the world are ready, and space telescopes are aimed at the ecliptic coordinate position predicted by Du Xingyu (astronomical coordinates inside the solar system).

    Europe, Jiaxing near monihei, Germany, is the headquarters of the European Southern Observatory. Astronomers and institutions from 16 countries jointly participated in the construction.

    Here, Europe''s top astronomers are waiting for tonight''s space telescope observations.

    Their telescope on Mount racia, north of Santiago, Chile, has been aimed at the target area.

    In space, the space telescope sent by the European Space Agency is also observing the target area.

    In Canada, the space telescope made by the University of British Columbia is aligning its direction to find what Du Xingyu calls the "Death Star".

    The United States, Hubble Space Telescope, space infrared telescope, Haier telescope, Chandra X-ray Space Telescope... And so on. There is only one observation target tonight, the possible "Death Star"!

    The director, deputy director and a group of astronomy professors of the Island National Observatory gathered here to observe the pictures from the space telescope at the observation center.

    Korean astronomical research institute, Russian Academy of Sciences, Indian Observatory, several major astronomical observation centers in Australia, several major observatories in South America

    Those with space telescopes use space telescopes, and those without them have to observe with high-power optical telescopes.

    In short, astronomical observation centers all over the world have focused on the direction of "Death Star".

    This is destined to be an unusual moment. People all over the world are waiting for a conclusion. Many people are praying that Du Xingyu''s calculation is wrong.

    The leaders of Huaxia Observatory and academicians of the Academy of sciences are also waiting for the results. As time goes by, this hour seems to be longer than the previous year.

    In the computer picture, it is the picture observed by the space telescope in space. In that direction, it is dark and seems to be nothingness.

    Wang Qing looked at his watch. It was already 21:03 Beijing time. He had not observed the death star yet.

    His psychology is very contradictory. Naturally, he doesn''t want to observe, but he knows that if he doesn''t observe, the consequences will be more terrible. Human beings will relax their vigilance and think it''s an international farce!

    "There''s a change!" someone said. "The computer detected an extremely weak brightness change in the target area."

    The people immediately became nervous. The computer magnified the change area, but it was still difficult for them to distinguish it with the naked eye. The light sensing instrument of the space telescope showed that the brightness of this area was indeed changing, and it received the infrared light reflected by a celestial body.

    "The brightness is indeed changing. It will take several hours to get clearer!" Wang Qing said.

    "The prophecy will come true!" at this moment, everyone''s expression was very dignified.

    They are still waiting, and countries around the world with advanced space observation capabilities have observed it.

    "There is an unidentified object in this position!" the senior officials of the US outer space defense command have learned the news.

    "Professor Du Xingyu and Professor Beth''s inference is accurate!"

    "The death star really exists!"

    "Go and ask Professor Beth. We need more data!"

    "It''s really a headache!"

    At the European Southern Observatory, people naturally observed the star of death.

    "Du Xingyu is right. This is a disaster!" Rachel, an astronomer from Max Planck Astronomical Society in Germany, said with trembling voice and panic: "his prediction has come true! What can we do? We can''t do anything!"

    "Professor, please calm down," said the astronomer next to him. "What we have observed now means that we still have nearly 20 years to find a way to solve it."

    "I''m sure of one thing," said the manager of the European Space Agency. "We can''t cope with it with the strength of Europe. We must have a high-level dialogue with countries and ask the world for help!"

    "Especially in China, Du Xingyu expected it long ago. They must have a way!"