Xu Jiawei called out Ma Biao and said, "The professor is here to take care of you, if there is anything, you can call me quickly, whether it is urgent or not, even if the professor's matter is the smallest, it is a big deal." ”

"Got it, you go. ”

These four disciples have a very deep affection for the professor, and when they see the professor working so hard, they always feel a little inexplicable guilt in their hearts, and they always want to reduce the burden on the professor.

Xu Jiawei's home is not far from the Jinshan Astronomical Research Institute, and it takes 10 minutes to drive a flying car. Li Jiejing, the mother, was very happy to see her son go home, and said, "The institute is very busy now, I haven't come back to see my mother for a long time." ”

"I don't know if the institute is busy or not, anyway, our laboratory is quite busy, if Professor Shen hadn't forced us to go home and rest today, a few of our disciples would definitely have been in the unit. Xu Jiawei said.

"Don't talk early when you go home for dinner, so that Mom can get a few dishes you like. ”

"Mom, you know I'm never picky when I eat, I can eat anything. Where's my brother?"

"He said he'd come back later. ”

"Mom, I'm tired, I'm going to lie down first, and wait for the next meal to scream. After Xu Jiawei finished speaking, he walked to his room.

"I'm 30 years old, and I'm still like a child. ”

"Who called you my mother, I will always be a child in front of my mother, ha. ”

Xu Jiawei was lying on the bed, stretching his limbs comfortably, and it felt so good to go home!

Xu Jiawei's astronomical hobby began when he was a child, his father was a middle school geography teacher, when Xiao Jiawei was a child, his father told him astronomical stories, he listened to them very devotedly, Dad's stories have myths and legends, and there are also real events, such as when it comes to the story of the moon, Chang'e running to the moon is a myth, and Apollo landing on the moon is real. The strange thing is that the father found that the stories his son told his father were all true stories, he said that there was a moon palace in the moon, and the moon could live in Chang'e at that time, and at that time, science and technology were developed, and people would fly in the air. Later, there were no resources on the moon, and Chang'e's generation did not know where to move. Apollo went to the moon a thousand years ago, and Chang'e was many years earlier than him.

"Will Jia Wei go to the moon when he grows up?" the father teased his son.

"No, if I want to go, I'll go where they haven't been, and go further than them. ”

"How far, how far?"

Xiao Jiawei thought for a moment and said, "The end of the day." ”

"Hehe, Dad wishes you success. ”

When he grew up, Xu Jiawei was obsessed with astronomy, and taught himself a lot of astronomy and geography knowledge, so that he was seriously biased when he was studying, but fortunately, his astronomical and geographical knowledge was really good, and he began to publish papers on astronomy and geography when he was in high school, and several excellent papers were praised by famous astronomers in China. After graduating from university, Professor Shen Wei of the Jinshan Institute of Astronomy wanted to set up a team to study extraterrestrial planet resources, so he directly recruited Xu Jiawei to his command. Professor Shen Wei is very strict with the selection of personnel in this team, and if the requirements are not met, there will be empty places, and no matter how many people want to enter, they will not be able to enter.

"Brother, it's time to eat. "Brother Xu Jiaxuan is knocking on the door.

"Okay, here we are. Xu Jiawei got up with a bone.

Seeing a table of good dishes, Xu Jiawei couldn't help but want to eat it, but he knew that he couldn't eat it if his father didn't come. Mom saw that Jia Wei was sitting and didn't eat, and said strangely, "Why don't you eat?"

"Where's Daddy?"

"Brother, you can eat, Dad won't come home for dinner at night. Xu Jiaxuan said and began to eat, "Mom, my brother is so polite, I will have a sister-in-law in the future, if my sister-in-law doesn't eat, he may not dare to use chopsticks." ”

"You little guy, why don't you learn from your brother?" , mother Li Jiejing smiled and criticized her youngest son. At the same time, she also said to Xu Jiawei, "Jiawei, how is Lin Shanshan in your unit?" ”

"What's going on. Xu Jiawei was confused.

"Both of you are Professor Shen's protégés, the last time your father met Professor Shen and talked about your situation, Professor Shen said that you and Lin Shanshan are very good, the two of you are very close, work together every day, and their thoughts are basically the same. ”

"Mom. This is where and where, the thinking is basically the same, that is a matter of work, not an emotional thing. ”

"Then you don't have any feelings? I'm talking about personal feelings. ”

"The goddess has no heart, and the king has no dreams. Haha"

"You disciples are really weird, why don't you talk about anyone. ”

"We've devoted ourselves to astronomy, so we don't have time to talk about personal matters, and if the professor hadn't insisted that we go home today, we would still be in the lab at this time. I really pity our professor, he has to spend the evenings alone in the laboratory. ”

"Jia Wei, the other people's mothers can't take care of them, you have to cheer me up, you must find a partner as soon as possible, if you don't like Lin Shanshan, my mother will find one for you." Your brother is not young, if you don't think about yourself, you have to think about your brother, if you don't get married, your brother can't get married. ”

"Mom, you don't have to, my younger brother is married to my younger brother, I can be the eldest brother later than my younger brother, I don't care, do you care?"

"Brother, I agree with Mom, you have to find a partner as soon as possible. Ha ha. ”

"Well, since you're so much on the same page, I'll just try. ”

"That's right. Mom said, "Eat more, how can there be delicious food cooked by my mother in the canteen of your unit." ”

"That's for sure. Xu Jiawei said, "Only my mother is good in the world, otherwise this song from more than 1,000 years ago would not have been passed down to this day." ”

Twenty days later, the message at the end of the day replied: Thank you very much for the care of the family, we: west, south, south, south, all very good, when we came out of the house all the way to the east, out of the solar system we fell asleep, I don't know how many years we flew, I don't know if the direction has deviated, I woke up here here, showing that it flew to a place of 15 billion light years, and now it is dark outside. We follow the agreement we made when we left home, and when we arrive at our destination, we ask the family for the next step.

Professor Shen Wei said: "From this information, it can be seen that there are only two people on the spacecraft, one is called Xixi and the other is called Nannan, and the general orientation is east, and the information exchange takes about 20 days at a time. Just as Xu Jiawei guessed, first, out of the solar system, people flying in space at the speed of light will stop growing. Two, the generation of humans back then would have put travelers to sleep. Third, our technological level is also higher than theirs, for example, they can't show it after flying for a few years, if our spacecraft will definitely have this design ability. ”

Xu Jiawei said: "Professor, the next real test is coming, they are asking for advice on what to do next, what can we say? Our technological level has not kept up with them, and we are not prepared to explore the place of 15 billion light years." I don't think this issue can be discussed in any way, so it is better to tell them directly that we are the next generation of human beings. ”

"I agree. Lin Shanshan said.

"That's all there is to it. Chen Jie said.

"What is your opinion? Professor Shen Wei asked.

"I don't think there's a better way. Ma Biao said.

Professor Shen Wei said: "This is probably the best way, I will tell them one day, and now we have a preliminary grasp of their information and can tell them." Shanshan, you are a female classmate, prepare a draft, try to be as delicate as possible, so that they can understand, but not make them lose confidence, and make them believe that we can help them with their next move. ”

"Okay. Lin Shanshan said.

"The good news is that the space travel program is going one step further, and the 100 times faster spacecraft has been approved for construction, and we can go even further. After the last meeting, their team was very efficient, they have come up with renderings, the design concept is exactly the same as ours, especially appreciate the small biosphere, people living in it will feel like being in a forest park, I read it and agreed, if several other participants also agree, you can enter the drawing design, after the drawings are ready, with the current technology, the speed of construction will be very fast. Professor Shen Wei said.

"Hehe, the opportunity has finally come, it's time for me to go on the expedition this time. Xu Jiawei said with a smile.

"Theoretically, anyone can do it. The professor did not deny it, nor did he directly agree, "You can go to find information when you have time, do your homework, and once you are really sure that you can go up, you can fight a prepared battle." It's not just Jia Wei, everyone is the same, the four of you are very good, and it is expected who you send up. ”

"I will, I will, start doing it today. Ha ha. Xu Jiawei finally saw the hope of going to outer space, not to mention how happy.

Lin Shanshan handed over the draft of the text to be sent to the professor: "The two seniors of the West, South, and South, I regret to tell you that we are your descendants, and the generation that sent you to fly is no longer there, because there is no information left, we cannot know about your mission, can you tell us the relevant news? What do you need our help with now? We will take over the follow-up contact with you, and we will care more about you." We'll be in touch at least once a day from now on, do you think there's a problem?"

"Why don't you talk about that generation of human beings, isn't this more thorough?" Chen Jie said.

Professor Shen Wei said, "Okay, Shanshan will send it out according to your wishes." Chen Jie, it is better to have one less word 'class', which can not only express our meaning, but also make them not have a long-term feeling. ”

I don't know how they will feel when they see this news. Lin Shanshan said.

"Their feelings haven't been generated yet, but my feelings are. Xu Jiawei said, "When they set off, maybe they had a farewell party, but they didn't expect that when they arrived, they were already different, and the person who sent him off had gone millions or even tens of millions of years before them, so it was not sad." You say, didn't the people who sent them on their way expect that they would never see each other once they went? 15 billion light-years, like our current state-of-the-art speed, would take 150 million years each way. I don't think that's going to be the case, there must be a problem in that link, and they definitely won't let the executors go back forever, so there's no point in sending them out to carry out the mission. When they are sent out, it stands to reason that they will be in constant contact along the way. But according to them, after telling them about the solar system, let them fall asleep along the way, so what does that mean?"

"They ......," Lin Shanshan said and stopped.