At this moment, Li Yi was full of confidence, he gave up who else he was, and said with a smile: "It is somewhat biased to say that dark energy does not exist, but it should be accurate to say that even if there is dark energy in our universe, its share is negligible, and it is completely negligible!" ”

"Our universe? Are you saying that there are other universes besides this? Yu Bing heard some taste, and she immediately asked back. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

"The dark energy of the universe we are in is weak, does it exist in another universe?" After all, it was Zhang Ying, and she found the root of the problem from just a few words.

Li Yi showed an approving gaze, he looked at Yu Bing, and then at Zhang Ying, the depth of the questions between the two was different, but they had commonalities.

"It's not easy for you to think of this layer, the universe we are in is extremely limited, and of course there is a larger universe out there, there is no doubt about it. And this dark energy that cannot be found exists in the outer universe. Li Yi said this, his eyes flashed with excitement.

"The outer universe?" Yu Bing's train of thought was also confused, but driven by curiosity, she still asked casually: "Is it the expansion of the outer universe that has driven the accelerated expansion of our universe?" ”

"Well, it's hard to guess whether the upper universe will expand or contract, but its impact on us is very weak and negligible."

"What? Another negligible! Yu Bing was surprised, she was getting more and more confused, and the influence of the upper universe was not considered, so what was going on?

"It's the outer universe that is shrinking!" Li Yi was full of smiles, and under the surprised gaze of Zhang Ying and Yu Bing, he gave the answer unhurriedly: "There are many sub-universes around us, some of which are expanding, and some are contracting, but the general trend is contraction, and it is contracting. Only under the combined force of various cosmic spaces can our universe accelerate its expansion! Therefore, this is the source of seventy percent of the dark energy, and it is also the fundamental reason for the continuous expansion of our universe, and it is the fundamental reason for the accelerated expansion. ”

"This is what people often say is a heaven outside the sky?" Zhang Ying thought about it, she felt very reasonable, and she couldn't help but feel it.

"That's right! The foresight of our predecessors was that they had long anticipated that there would be a much larger universe beyond the universe. Li Yi nodded approvingly.

"Then our universe will never stop expanding?" Yu Bing couldn't help but ask, "Is there no power to limit its expansion?" ”

"Yes! This power still comes from the outer universe. Li Yi's tone was very firm, and he was still smiling: "These shrinking universes have their end after all, when they shrink to a certain extent, assuming that when they reach a base point, all matter is infinitely compressed and transformed into infinite energy, and it reaches a limit. The extremes of things must be reversed, and the moon will wax and fall, and this base point will inevitably explode, which is the Big Bang. If this change affects the trend of our universe, or if there is a qualitative change in the space force acting on our universe, it will push our universe to begin to contract. ”

"Shrink!" Yu Bing's expression trembled, and she seemed to see that the huge universe instantly turned into a point, turning the planets, stars, nebulae, and black holes in it into ...... All compressed, the celestial body collapsed in an instant, and the world was destroyed invisibly: "It's terrible! Yu Bing's face was a little ugly.

"It's okay, don't be afraid!" Li Yi comforted when he heard this: "The universe has changed from accelerating expansion to expanding at a uniform speed, and then to decelerating and expanding, and then reaching the equilibrium point before it can contract." It's a long process, measured in tens of billions of years. Even if our universe enters the contraction stage, it does not necessarily shrink to a base point, if it is in the process of contraction, it suffers from great changes by external forces. That is, the sub-universe has changed from expansion to contraction, and has entered an irreversible state one step ahead of us, which may change the space force of our universe and slow down or even terminate the contraction of our universe. ”

"It's amazing, it's so profound!" Zhang Ying couldn't help but sigh, she looked at the sky outside, had infinite reverie, suddenly thoughtful, and said with a slight smile: "If this combined force is always kept within a certain range, so that our universe is limited to periodic scaling movement, then it can never be destroyed!" ”

Hehe! Li Yi laughed dryly, he did not agree or object. Who wouldn't want that? But the objective law is there, and the unimaginable huge energy cannot be changed by man, and who can know if there will be a day of destruction?

"I hope so!" Yu Bing echoed, she really didn't think about it so much, she just expressed her good wishes.

"If it never shrinks to a single cardinal point, sooner or later the stars will die out, and together with the planets will become a dark, cold, lifeless universe. It is better to keep a dead universe than to reintegrate and give birth to a whole new world. Li Yi hesitated for a long time, but he couldn't help but say what was in his heart.

"My brother is right, even if the world is like this, it needs an external force to make it vibrant and energetic." Because Cai Yong was by her side, Zhang Ying didn't dare to be too blatant, so she made an analogy a little cryptically.

"Your guest is here!" A woman's voice sounded, and then a middle-aged beautiful woman appeared in the study, and it was Cai Yan who called her mother back.

"Hello aunt!" "Madame is well!" ……

Hearing this familiar voice, the three of them had to stop the topic and greet Mrs. Cai Zhao Zhen.

is also an old acquaintance, and is a life-saving benefactor, although Zhao Zhen is an elder, but she does not regard herself as an elder, she said a few words of greetings in an approachable manner, then prepared a meal under the pretext of preparing a meal, and led Cai Yan to the kitchen.

"Three little friends, let's wait for a while, and the old man will go back when he goes!" After this episode, Cai Yong returned to the real world from his meditation, and he wanted to leave for a while to get his treasured wine and entertain these three young and promising guests.

"Good go, sir!" Seeing Cai Yong leave, the three of them could talk about the infinite universe unscrupulously.

"When was this assertion conceived?" Zhang Yingqiu's waves flowed, she looked at her husband, and there was a feeling that she should get to know her again.

"It's been three years, and that's before our sisters met." Without waiting for Li Yi to answer, Yu Bing said first.

"If there is such a significant discovery, why not make it public and let the scientific community discuss its reliability?" Zhang Ying asked about the mystery that had been building up for a long time.

"I'm waiting for a grass people, and if I want to go up to the sky, how easy is it?" Li Yi showed a helpless expression.

"It's a pity! Now cut off from the afterlife, there is no hope left! Zhang Ying shook his head and sighed: "If you can return to the 21st century, it will be a lot of hardships, and I will also make this news public so that China and the world will know about it." (To be continued.) )