"Professor, we shouldn't carry microorganisms on meteorites, right? I've never touched that meteorite."

Niu Dazhi rubbed his clothes with his hands, feeling the illusion that he was no longer clean.

Lu Xiuwen said in a casual tone: "Don't be nervous, I'll ask you to come back for testing, just to ensure that the microorganisms in the meteorites have not spread out.

"Theoretically, you shouldn't be infected with these microorganisms, and testing is just a routine matter."

While the few were talking, a professor of astronomy from the University of Astronautics and Astronautics brought two graduate students to communicate with Lu Xiuwen.

Since this meteorite comes from outer space, it involves the field of astronomy.

"Professor Lu, this is a command from the headquarters. I am responsible for astronomy research on this meteorite." A professor of astronomy from the University of Aerospace Science and Technology stepped forward and shook hands with Lu Xiuwen.

"Hello, hello, welcome, Professor Lang, please sit first, please sit first." Lu Xiuwen shook hands with him while asking him to sit down.

This astronomy professor is named Lang Tongguang, and he is also an important figure in the astronomy community in China.

Due to the emergence of the Star Beast World, astronomy has been a hot topic in recent decades.

Fang Yuan felt that Professor Lang Tongguang looked familiar, as if he had seen it on TV news.

After the two of them had politely made a fuss, Lang Tongguang asked directly: "When will I see that meteorite?"

"We are doing microbial protection work. After the protection work is completed, we can go and see it. It will take about an hour. Can Professor Lang wait?" Lu Xiuwen looked at the time on the watch.

An hour was not long, and Lang Tongguang applied to the headquarters to learn that microorganisms were found in the meteorite. He knew that the microorganisms in this meteorite might come from other planets, which has important research value for astronomy.

Next.

The crew of the Shenzhou crew conducted microbial testing one after another. After confirming that there was no problem, they were allowed to go home.

Fang Yuan and his others did not leave. Seeing Lu Xiuwen and Lang Tongguang discussing about the meteorite, they came over to listen.

About an hour later, a researcher came over and reported to Lu Xiuwen: "Professor, the protection work has been completed."

"Can we go to see the meteorite?" Lang Tongguang was a little anxious.

After all, this is a meteorite with microorganisms, and it is very likely from another planet with life. This is a major breakthrough for astronomy research.

Before this, humans discovered fossils of microorganisms in meteorites hundreds of thousands of years ago, but never found living microorganisms.

This time, living microorganisms were really discovered in the meteorite, and Lang Tongguang's excitement was indescribable.

Fang Yuan and his friends also followed him to see the meteorite.

The group walked to the laboratory where the meteorites were stored, put on protective clothing, and then walked in and watched the meteorite up close.

The meteorite is still the same meteorite.

Fang Yuan has not only seen it, but also touched it.

However, when I saw this meteorite again, it felt completely different.

The shape has not changed, but when I first saw it, I didn’t know that there were microorganisms inside it.

Now, when I saw this meteorite again, I knew that there were microorganisms that might come from aliens inside it, and this feeling was very subtle.

This meteorite is very large, with a diameter of about five meters and is in an irregular shape.

To the naked eye, this meteorite is a stone with a high mineral content and there is nothing special about it.

From the perspective of elemental analysis, the main elements are iron and silicon, and there is nothing surprising.

"Professor Lang, are the microorganisms on this meteorite really aliens?" Eve looked up and down curiously and asked a question.

"It's not certain yet. However, this star shouldn't be called a meteorite. According to the information found, it is actually an asteroid." Lang Tongguang corrected.

"Asteroid? Can five meters be considered an asteroid?" Everyone was surprised.

Because if this stone is regarded as a meteorite, it is considered large, but if it is regarded as an asteroid, it is too small.

"Yes, according to the rules of the asteroid, the diameter of more than three meters and less than three hundred kilometers is called asteroids. Although this celestial body is small, it does meet the standards of an asteroid." Lang Tongguang confirmed.

Fang Yuan blinked his eyes and said, "What do you mean is this stone orbiting the sun?"

"Yes, this asteroid is a near-Earth asteroid. Although it is small, it is very close to the earth because it is located at a distance from the earth, so humans have actually discovered it..."

Lang Tongguang began to explain in astronomy: "If this asteroid is not brought back by you, every time it orbits the sun, when it approaches the earth, it will be affected by the gravity of the earth, causing the orbit to deflect at a small angle, and there is a possibility of hitting the earth in the future.

"However, because this asteroid is too small, even if it falls into the earth, it will not cause disaster, so the astronomy community has not issued an early warning.

"In fact, an asteroid like this, which is five to ten meters, will appear on average in an atmosphere that enters the Earth in an atmosphere a year.

"The energy released is probably equivalent to the equivalent of an atomic bomb, but most of it will be vaporized in the atmosphere, so it will not have much impact on the earth."

No one expected that such a five-meter-diameter stone would be an asteroid, and they were all a little surprised.

Fang Yuan asked curiously: "So how big asteroid will fall into the earth to cause disaster?"

"Asteroids with a diameter of about 50 meters hit the Earth once every 1,000 years, and the explosion generated is equivalent to the Tungus explosion in the early 20th century. The earth can still withstand the impact of this order of magnitude, and the problem of more than 100 meters will not be too serious. If the diameter of the asteroid reaches one thousand meters, it will cause a devastating disaster." Lang Tongguang patiently answered the questions of several people.

"Are there many asteroids like this?" Fang Yuan asked.

"At present, the number of asteroids discovered by humans in the solar system is 120,000."

Lang Tongguang continued to popularize science: "However, the orbits of most asteroids are between the orbits of Mars and Jupiter, that is, most of them are in the asteroid belt.

"The orbit of the asteroid belt is between the orbits of Mars and Jupiter.

"In the solar system, the closest planet to the sun is Mercury, followed by Venus, and then Earth.
Chapter completed!