"The asteroid belt is located between the orbits of Mars and Jupiter, and the distance between the Earth's orbit and the Martian orbit is more than 50 million kilometers, so most of the asteroids are also more than 50 million kilometers away from the Earth."

Lang Tongguang continued to popularize science to everyone: "Although most of the asteroids are located in the asteroid belt, there are too many asteroids, so there will always be some that will run outside the asteroid belt.

"This asteroid is an asteroid that orbits very close to the Earth, but because the diameter is too small, it has not been discovered by humans, and it is known that it was discovered not long ago.

"The asteroid's provisional designation is 810020, but now that you have brought it back, the asteroid will disappear into the solar system forever."

Fang Yuan didn't expect that he would "eliminate" an asteroid with his own hands.

Han Youwei had been listening carefully to Lang Tongguang's explanation, and at this time she raised her hand and asked, "Professor Lang, I have a question, how did so many asteroids in the asteroid belt form?" ”

The asteroid belt, like a dust ring, is trapped in the solar system.

"There are 120,000 named asteroids, and if you count the unnamed asteroids, the number is at least 600,000, plus meteors and cosmic dust with very small diameters, the number is indeed amazing. As for how the asteroid belt was formed......"

Lang Tongguang also showed a thoughtful expression: "There is no conclusion in the astronomical world yet, if you want to hear interesting answers."

"There's an interesting speculation that there was originally a planet in the asteroid belt that was larger than the Earth.

"Or there are two large planets, and after the two planets collided, they exploded into millions of fragments, and after billions of years of evolution, they gradually formed the current asteroid belt."

Fang Yuan blinked his eyes: "If that's the case, then the microbes on this asteroid ......"

"There is indeed such a possibility, but it can only be said that it is possible, after all, there is no way to determine the cause of the formation of the asteroid belt." Lang Tongguang did not give a positive answer, after all, this question has not been answered by humans so far.

When everyone heard this, they were amazed.

If there was once a large planet in the solar system, near the asteroid belt, and now the microbes in this meteorite are from this large planet, then ......

In other words, in addition to the Earth, there used to be a planet with life in the solar system.

This possibility is very amazing, although it is only a guess, but the thought of this possibility makes people's hearts pound.

Lang Tongguang saw the expressions of several people, and knew what several people were thinking, and said with a smile: "Don't take it too seriously, this is just a guess, and it must be true."

"Moreover, it is possible that an asteroid like this may have drifted from other galaxies, been caught by the sun's gravity, and stayed in the solar system.

"So, even if there were once large planets near the asteroid belt, it doesn't prove that life ever existed on them."

Fang Yuan asked again: "If the material of this asteroid is tested, we should be able to get some information, right?" ”

"We'll have to bring some samples back for study, and we can't answer yet." Lang Tongguang replied.

Fang Yuan nodded after thinking about it, and then asked, "So what does the professor think is more likely to be the microbial on this asteroid?" Is it more likely to come from within the solar system? ”

"This ......"

Lang Tongguang frowned and replied, "It's really hard to give an answer to this. ”

Just as a few people were talking.

A researcher from the Institute of Biology handed the report of the microorganism to Lu Xiuwen.

Lu Xiuwen opened it and read it carefully.

The other people next to me also wanted to know the results, so they all gathered around to see it.

"How? What was said in the report. ”

Since this report is a relatively professional report, it is difficult for a layman to understand it after a few glances.

Lu Xiuwen explained while looking at it: "Judging from the preliminary detection, the first point that can be determined is that the microorganisms on this asteroid are carbon-based. ”

There is a lot of information in these words.

First of all, the microbes of this asteroid are carbon-based, which means that it has nothing to do with the Star Beast World.

Due to the nesting of the Earth and the Star Beast World in the fourth dimension, the meteorites that appear in outer space are not necessarily from the solar system, but may also come from the Star Beast World.

So, before seeing this report.

It is impossible to determine what galaxy the microbes on this asteroid came from.

If these microorganisms are silicon-based, then it is almost certain that they are microorganisms from the Star Beast World.

Now, the microbes on this asteroid are indeed carbon-based, which excludes the possibility of coming from the Star Beast World.

However, this answer makes people's hearts tug again.

An asteroid from outer space has microbes and is carbon-based, which means that there is another planet with life besides Earth.

This planet is not from the Star Beast World, and the nine planets of the solar system can basically be considered lifeless, at least there are no intelligent species.

Then, there are two possibilities for the microbes on this asteroid.

First, the microbes on this asteroid come from outside the solar system, which means that there may be a planet with life in the nearby galaxies of the solar system.

The second, the microbes on this asteroid, come from within the solar system.

If this is the case, then there may have been a planet in the orbit of the asteroid belt of the solar system that actually had life, and these microbes may be the legacy of this planet that has disappeared.

When Fang Yuan thought of the second possibility, a glint suddenly flashed in his eyes, and he hurriedly asked, "Professor Lu, can you be sure that these microorganisms are from outside the solar system?" Is it still in the solar system? ”

Lu Xiuwen slowly shook his head and replied, "This ...... I can't give an exact answer, but judging from the structure of these microorganisms, there is a certain similarity with the microorganisms of the earth.

"It is certain that these microbes have never existed on Earth. That is, these microorganisms should not be from Earth.

However, due to the similarity between these microorganisms and the microorganisms of the earth, the living environment of these microorganisms should be similar to that of the earth.

"So, it's really possible that these microbes come from the inner solar system."

Fang Yuan's eyes widened: "In this case, there is a high possibility that there was once a living planet in the orbit of the asteroid belt?" ”

"There is a real possibility, but there is no direct evidence to prove it." Lang Tongguang agreed with this speculation, but was not sure about the conclusion.

Fang Yuan's breathing was a little shorter, he glanced around at everyone and said, "I thought of a terrible guess, if there was once a living planet in the solar system, and this living planet shattered into cosmic dust.

"So, is it possible that this living planet in the solar system also encountered a crisis like the earth, and was finally destroyed by a higher civilization......

Hearing this speculation, everyone's eyes widened at the same time, revealing expressions of astonishment.