Hayashi 2frog and Qingxue began to assemble the laser transmitter and prepare to fire it towards the second sun, which often appeared in the sky.

Maybe something will be found, maybe nothing will be found. But Lin 2 Frog instinctively thinks that there must be something unusual about abnormal natural phenomena! What's more, although technology is very important in this planet that can travel through space, manufacturing and production are very important, just like the bunch of things that King Nihod did. But it's more important to understand what the world is really like.

Soon they were able to build a simple laser emitter that could transmit optical signals. After programming Pea Mountain, they waited until the second sun appeared in the sky and signaled it!

Due to the fact that the signal may be received by an unknown civilization and so on, this time the signal is just a very simple, 123 signal. There is neither hostility nor good intentions, and even if a higher civilization receives it, it may be considered some kind of coincidence. And if the human civilization in the solar system receives it, it will be different, because this is the so-called special code that the three of them and 2 frogs usually mentioned when they chat!

There was a time when the three of them were chatting together, and if they didn't have their hearts wandering about an unknown planet, what kind of distress signal should they send? After all, distress signals can also attract danger! So the result of their discussion at that time was to send the signal 123, which is the very simple or even the simplest combination of numbers. It doesn't even contain any valid information, unless it's agreed in advance.

After the dispatch was completed, Lin 2 Frog breathed a long sigh of relief. But Qingxue thinks, huh? We worked so hard, and we took so much risk, that we even broke a certain tacit agreement with King Nihod that we had formed in the past 5 years and did not invade each other, and we just fiddled with it and it was over? How should it be at least tinkering for half a month or something.

And Lin 2frog's explanation is: "If it can be received by the solar system civilization, it is enough, if not, then the less the better." ”

And Qingxue thinks it's super unenjoyable, okay?。。。

So they built a laser radio telescope to look at the surrounding bodies and prepare to receive signals. If a signal comes back, you can receive it.

The newly built laser radio telescope gave them a better understanding of the surrounding bodies. The planets and moons around them are indeed different from those they observed from Taoyuan Star or Earth, the only thing that is the same is that the Sun here is also a white dwarf star like the Sun in the Nihod Galaxy. Not even as simple as that, but from the signals that their laser radio telescopes can capture, almost the same as the touch of the sun.

And the second sun in the sky, which often appears, they have been observed many times.

"I think I've come to a conclusion!" Lin 2 frogs finally came to Qingxue who was processing leather and preparing winter clothes in a hurry.

Qingxue glanced at him, because he often ran around like this. In fact, Qingxue didn't care about his discovery most of the time, and Qingxue felt that he just needed an audience, as for whether the audience listened or not, and what the reaction was, Lin 2frog himself didn't care.

So Qingxue didn't stop what she was doing, just said perfunctorily: "Awesome, come and listen." ”

"In the place where the second sun periodically appears in the sky, there is actually a black hole there, and the range and distance cannot be measured yet, but it is sure that Sakura" said Lin 2 Frog excitedly.

"Black holes?" Qingxue was a little subversive of cognition, so she stopped and asked.

"Not bad! A black hole with high angular momentum, a black hole with angular momentum high enough to match a Kerr black hole! In the energy layer between his rest limit and the outer horizon, there is a hole torn open by angular momentum, which periodically rotates around the outer horizon, or around the black hole itself. And when this hole is turned to the right angle, the light from another body can just pass through this hole to get here, so that we have a miracle here for two days! Lin 2 frog explained and drew a picture for Qingxue to see.

"That's not light, can't escape a black hole or something?" Qingxue asked according to her own understanding.

"Nope! No! No! Strictly, it is space-time that light can't escape, and massive objects, such as bodies and black holes, they distort space-time! And the distortion is so serious that maybe the space-time interface has been completely broken! And the hole in the energy layer of this Kerr black hole is not within the event horizon, so the light is distorted and passes through this hole, so it can escape! Lin 2frog explained.

"So there's a star's light, bent and bent, coming from the black hole that circles around the big black hole? Is that the one we see? Qingxue tried to understand Zheng

"That's right. That's what yours is. Lin 2 frog said.

"And where is this star?" Qingxue asked.

Lin 2 frog shrugged his shoulders: "I don't know for the time being." ”

Qingxue said: "Understood! A major discovery, but it doesn't seem like it's enough to change the status quo, right? ”

Lin 2 frogs were originally very happy, and then they could let Qingxue stop what they were doing, and they felt even happier, but it didn't seem to be a big deal to be like this by him...

So Lin 2, who was very unwilling, thought for a while and said, "Maybe we can make a digital person and then use how many peas here to form a matrix laser array to make a photon person, and then send it over!" ”

When Qingxue heard this, she exclaimed, "Oh? That is, it is possible to find reinforcements from there? ”

Lin 2 Frog hesitated for a moment and said, "Even if you can't find reinforcements!" At least scare King Nihod, it shouldn't be a big problem! So they set out to prepare the plan. However, the first step encountered difficulties, Lin 2 frogs arranged the neuronal network according to the digital human method of humans in the past, but they were both frog people! And Qingxue is close to 400 years old as a frog!

Lin 2 frog said curiously: "According to the number of neurons every 50 years, the number of neurons will be 1 times more than that of humans, that is, you are at least several times more neurons than ordinary humans, why don't you see that you are smarter than me?" ”

Qingxue frowned and said, "How can you bet on such a sad topic!" ”

And at this moment, Qingxue's body flickered a little bit of light! Lin 2 frogs were shocked, if it was a coincidence or accident to see it once before, then if it was seen twice, the possibility of accident was greatly reduced! What is the reason for this?

Lin 2 Frog hurriedly found all kinds of things for Qingxue to do a physical examination! Qingxue's body is not sick, so will it be a psychological problem? Emotional problems? Or is it for what reason?

PS: I won't go into detail about the Kerr black hole mentioned in the previous article, and the picture is in the book review area of QQ reading.

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