Just when Bai Yuxuan was still immersed in the faint joy and relief of learning the truth, Zhou Zheng pushed the door straight and walked in.

"Incredible, it's incredible!"

The respected and well-informed professor was holding a report at this time, his brow furrowed, and his face was cloudy.

Seeing Zhou Zhengzhi walking in, Bai Yuxuan hurriedly stepped forward.

"What's the matter, Uncle Zhou? What's so weird about this thing? ”

"Well, the report is here, you can read it for yourself."

Zhou Zhengzhi handed the report to Bai Yuxuan, his arm trembling at an imperceptible frequency.

"I did a spectral analysis of it with a spectrometer in the lab and came up with this report."

While Bai Yuxuan carefully flipped through the report, Zhou Zhengzhi also explained synchronously.

"Through spectroscopic analysis, I quickly determined its composition and the amount of each component."

"In fact, it contains a surprisingly average amount of four components, silica, iron, and nickel," and each contains 25 percent. ”

"So it's a meteorite, a meteorite to be exact. Because it contains not only silicates, but also iron, nickel and other metals. At the moment, it seems that this is nothing more than an ordinary meteorite. ”

"But ......"

Zhou Zhengzhi's words paused, and he didn't seem to want to continue his explanation.

Bai Yuxuan also stopped what he was doing, he looked at Zhou Zhengzhi and said lightly.

"Uncle Zhou, didn't you say that there are four ingredients, you just said three, and what is the other one?"

Seeing that Bai Yuxuan asked like this, even if Zhou Zhengzhi didn't want to speak again, he had to continue to explain.

"Yes, in addition to the common substances in these three meteorites, there is also an ingredient, and his content is also 25%."

"However, this ingredient does not belong to any of the substances currently known on the Blue Star, and it is extremely radioactive, stronger than all the radioactive elements currently known on Earth."

"It is so radioactive that after a few seconds of exposure to it, the whole body of the average person will be exposed to extremely strong radioactive radiation, and finally die after a few minutes."

Zhou Zhengzhi rubbed his hands vigorously, as if he was afraid of the strong radioactivity of that thing.

Bai Yuxuan smiled dumbly after listening to Zhou Zhengzhi's words and comforted him.

"Ahem, it's okay, Uncle Zhou. You see, after all this time, aren't we all okay? ”

"By the way, where did you put it?"

I don't know if Zhou Zhengzhi listened to Bai Yuxuan's comfort, he trembled and stretched out his hand to point out the door.

"It's still in the lab, go get it yourself, be careful."

"Oh, got it."

Bai Yuxuan replied perfunctorily, picked up his backpack and walked out.

In the laboratory.

The meteorite looked even more mysterious in the light of the not so strong, and even made people feel that it was alive.

Bai Yuxuan didn't care about Zhou Zhengzhi's words just now.

For one, he was not a chemistry student and did not have a clear idea of the dangers of radioactivity.

Second, more than ten or twenty hours had passed since he first saw this stone, and if this stone was really so harmful, he would have had an accident a long time ago.

He does not deny Zhou's professionalism, because he has been a professor in the Department of Chemistry for more than ten years, and Zhou Zhengzhi and his father have been friends for many years.

Bai Yuxuan felt that the radioactivity of this meteorite might be really strong, but for some reason, this strong radioactivity did not manifest itself.

Moreover, the origin of this thing is indeed a mystery.

To be honest, Bai Yuxuan is still a little blind, although he has accepted this fact, but he doesn't know why he is the only one who knows the news that the world will usher in the end in a year.

There is no point in thinking about this now, the most important thing is how to make the most of this last year.

So Bai Yuxuan grabbed the meteorite and threw it into his backpack, and left in a dashing manner.

After such a toss, the time was more than four o'clock in the afternoon.

Bai Yuxuan didn't eat breakfast or lunch, and only then did he feel a little hungry.

So he went to the school cafeteria, bought a random fried rice, found a place to sit, and flipped through the detailed analysis report while eating.

The report said that the main components of the stone were the same as Zhou Zhengzhi said, mainly silica, iron, nickel, and an unknown substance, and they each accounted for 25%.

At the same time, the radioactivity of this unknown substance exceeds that of all currently known radioactive elements, and it is extremely harmful!

Bai Yuxuan took out his mobile phone, clicked on the browser, and typed "radioactive" in the search box, and hundreds of thousands of results popped up.

Radioactivity refers to the phenomenon in which an element spontaneously emits rays (such as α rays, β rays, γ rays, etc.) from an unstable nucleus, and decays to form a stable element and stops emitting radiation (decay products). The energy emitted during decay is called decay energy. Elements with atomic number 83 (bismuth) or above are radioactive, but some elements with atomic number less than 83, such as technetium, are also radioactive.

The radioactivity of radioactive elements is extremely harmful, and if the human body is exposed to high radioactive doses for a long time, 100% of them will die.

At the same time, radioactivity also has the ability to alter genetic material, which may cause genetic mutations and chromosomal malformations.

To put it simply, if a person lives in a radioactive environment for a long time, then in the end he will only die or mutate.

And this mutation can be passed on to the next generation, so there are strict control measures for radioactive material countries.

The report also pointed out that the radioactivity intensity of this unknown substance is equivalent to thousands of times that of the most radioactive element known, and that a short period of exposure can kill people.

Through the information and reports on his mobile phone, Bai Yuxuan knew the concept of radioactivity and also clarified the hazards of radioactivity.

But he didn't care about any of these things, he just wanted to know why the stone was so radioactive.

And a year later, when the end of the world really comes, when the Apophis really come, what to do.

After hastily finishing the meal in a few bites, Bai Yuxuan returned to the dormitory.

He first took out the meteorite and put it in a wooden box.

Then he took a comfortable hot bath, and he decided to get a good night's sleep tonight, and make up for all the sleep he hadn't slept last night.

Just when Bai Yuxuan was ready to turn off the lights and go to bed.

The phone on the table made a buzzing sound, presumably receiving some message.

Bai Yuxuan reached out and picked up his mobile phone and lit up the screen, there was only a short sentence on the screen.

But when Bai Yuxuan saw this, his breathing became short, and his face flushed a little strangely because of excitement.

"Do you believe in the end of the world?"