"If the light really can spread endlessly, then at night, our sky will be as bright as day, because even with our backs to the sun, there are still countless stars from all over the universe, and the light they emit can still reach us, and we should be in a world of eternal day."

Xu Qian nodded stunnedly, fortunately, he is also a primary school bully, and he has read a lot of books in this area, so it is really difficult for another person to accept Qianshu's words.

"In fact, our night sky is dark and lightless, and in the end, that light is lost by various media in the universe."

Chiki shook his head slightly, "Your explanation is just an irresponsible statement taken for granted, a hasty conclusion made in order to save trouble. ”

was pointed out by Qianshu that he was "irresponsible", which Xu Qian was a little strange to hear.

"The beginning of the universe was a big bang, and the civilization of the earth agrees with this, am I right?"

"That's right." Xu Qian didn't understand why he jumped on top of the Big Bang again.

"After the Big Bang, the entire universe is constantly expanding and expanding, and the boundaries of the universe are constantly extending."

Others have analyzed and speculated based on scientific evidence, but Xu Qian has seen it with his own eyes, and there is no doubt that the small universe in his body originated from the Big Bang.

"But have you ever thought about the speed at which the boundaries of the universe are expanding outward? Also, this expansion continues the entire life of the universe, if it has life at all. So what is the purpose of this expansion? Will it stop? ”

Qianshu's three questions made Xu Xueba speechless. In front of Qianshu, where is he qualified to be called a scholar, he is a scumbag, Qianshu is the real scholar, no, he is a god of learning!

"Do you know the answers to these three questions?" Xu Qian was also brought into the rhythm of thinking about the major events of the universe by Qianshu.

"No, I don't know! Whoever can answer these three questions clearly, I think, is only the will of the universe itself. However, I have some suspicions about it. ”

"Guess?" Xu Qian looked at Qianshu with a quiet face, but from her eyes, he also saw a light that he had never seen before.

Chiki really likes to do research in this area! She's kind of found what she loves. Xu Qian thought silently in his heart.

"Well, it can only be said to be conjecture." With a rare hint of pride, Chiki continued: "If the universe expands faster than the speed of light, then the light of the stars far away from us will never reach our night sky. ”

Xu Qian put forward a different point of view, "You're talking about the redshift phenomenon. It may also be because those stars are too far away from us, for example, tens of billions of light-years, if that star has not passed tens of billions of years since its birth, the light it emits has not yet reached us. ”

"You're right, but even in the vast universe it's still pitch black. You've traveled through space many times, and you should have more say in that than I do! ”

"We don't see light until the light enters our eyes, otherwise in a vacuum, even if the light passes through our eyes, we still see darkness. If it is not in a vacuum, the light will fall on fine things such as dust in the air, and the resulting scattering will also cause the light to enter our eyes, so that we can also see the light. Against the pitch-black background of space, the earth's technological civilization has already given some ideas, such as observable cosmology. ”

Xu Qian didn't do any research, he just said what he had seen.

"Observable cosmology holds that the universe as we see it is not the whole of the universe, but the parts of the universe where light has reached us, and the parts that we cannot see that have not yet reached us. Of course, this is from the perspective of the earth, and if it were to be changed to another space, the observable part of the universe would naturally be different. Well, this view is based on the assertion that the universe had a beginning, that at the beginning of the universe there were not many stars that could emit light, so it was pitch black, and then there were more stars, but they were not in our observable universe. In other words, the darkness of space may be what it was like billions of years ago, not the reality of the universe today. ”

Qianshu was noncommittal to Xu Qian's words, but his expression became gentle, "No matter what you say, all the evidence points to one point, that is, the universe is indeed expanding, right?" ”

To be honest, even if he has some experience wandering the universe, he still can't really understand these ultimate mysteries, it seems that if he wants to make a clear explanation, the immortal civilization still can't do it, and he believes that even if he cultivates to the immortal emperor, he still can't say it clearly. In this regard, it still depends on scientific and technological civilization. But having said that, the level of some of the technological planets in the Sixteen Star Domains is much higher than that of the Earth and the Blue Sea Star, and these questions involving the ultimate meaning of the universe are also inconclusive, at most there are more empirical evidence and inferences.

"Qianshu, what do you want to say, it's rare for me to come to you today, and you plan to discuss cosmic science with me?"

Chiki regained her grim face, "Then what do you think we should discuss?" ”

Xu Qian was speechless for a while, yes, what else could they talk about? Love? He has children with An Weiwei, and he still talks about fart love with Qianshu, and he can't say that kind of shameless words.

It's not easy for him to get along with Chiki like friends, and it's even more thankful that the two can have an in-depth discussion.

"Okay, Chiki, tell me what you think, I'll listen." Xu Qian is a compromise, and it is not bad to be able to stay with Qianshu like this.

"I think that the expansion of the universe is due to its life, and in the end, the universe will come to an end, and the whole space will collapse, just like the big bang at the beginning, the end is the beginning, or in other words, the beginning is the end. This is also the origin of the great destruction period of the Age of the Immortals, which was the end of a cosmic era and the beginning of our cosmic era. ”

Xu Qian was stunned, many of the things that Qianshu said were the conclusions that the Earth Civilization had already reached, but her current words were conclusions drawn in combination with the Immortal Cultivation Civilization, and the thoughts in them were related to the Middle Thousand Worlds that he had just learned. If Chiki had made such a judgment without knowing anything about the middle world, he had to admire his ex-girlfriend's acumen and judgment.

"Xu Qian, haven't you always felt that there is a big secret hidden in this world? Perhaps the cause of everything comes from this inevitable cycle. The end of an era is the beginning of another, so how can the pinnacle of the previous era be willing? Since there is life in the universe, and since it will die of old age, then the will of the universe also exists as a fact, so will those people at the peak who are unwilling to go to destruction ask for something with the will of the universe? Although heaven and earth are unkind to all things as dogs, if there is an existence worthy of the will of the universe jumping out of all things, will it change its mind? ”

"Chishu, do you know my identity?"

"Resurrection, Awakener, right!" Chiki sighed lightly, "In the days when you disappeared, I had a lot of questions that could not be answered, so I went to find Qinglong and them, and they all told me. ”

Xu Qian would never take the initiative to reveal to others that he was a resurrectant, even when he was dating Qianshu, he never said it.

"Have you ever wondered if the so-called Chosen One will be the peak powerhouse who is unwilling to be arranged by the will of the universe and has to perish with everyone in the previous era?"

"Me?" Xu Qian really didn't think that he would be so good. The old bookworm guessed that he was one of the Immortal Emperors, but Qianshu raised this height up again, directly to the extent that he dared to argue with the Heavenly Prince.

"According to the laws of the universe that I have guessed, there is no resurrection at all. The expansion stopped, the universe collapsed, and everything disappeared, not to mention life. Even if an immortal is a god, he will not fall into a deep sleep and not die out completely. The will of the universe is the immortal of the immortals, the gods of the gods, and it wants all the burial of nothing, and no matter can continue to exist. But you survived, albeit in a different way, but you still haven't disappeared. This is counterintuitive and unreasonable. So I think there is only one possibility, and that is that the will of the universe will make an exception and allow you to continue to exist and live in the newly born universe. This has to be said to be a miracle. ”