Although Zhu Lei knows that the possibility of war between the Ming Empire and other planes and universes is very small, it is not impossible, for example, the last time the Ming Empire and the Ruer Star people were actually two different planes of war, so Zhu Lei can be very sure that the Ming Empire will definitely have wars with other planes in the future, so the less other planes know about the Ming Empire, especially in terms of core technology, then the greater the victory rate of the Ming Empire.

The asteroid belt of the solar system is composed of a group of stars in the primordial solar nebula, that is, the predecessor of the planets smaller than the planets, but due to the gravitational influence of Jupiter, these stars are hindered from forming planets, causing many stars to collide with each other, forming a lot of debris and debris, among which the three largest small stars in the asteroid belt are Homo sapiens, Marriage and Vesta.

The average diameter of these three asteroids is more than 400 kilometers, and there is a dwarf planet in the asteroid belt, namely Ceres, with a diameter of about 950 kilometers, and the rest of the asteroids are relatively small, some are even only the size of dust, due to the long time caused by the asteroid belt is now very thin, and the asteroids in the asteroid belt are mainly divided into three categories according to their nature, carbonaceous, silicate and metallic.

According to the calculations of Zhu Lei's scientists in his previous life and the scientists of the current Ming Empire and the results of computer simulations, the mass of the asteroid belt in the primitive period may be equal to or even higher than the total mass of the earth, but in a long time, most of the material in the asteroid belt has been thrown out, and now only one thousandth of the original mass remains.

There is also a large amount of ice in the asteroid belt, which is formed by condensation, and scientists believe that most of the water on Earth comes from here.

And now the asteroid belt will also be subject to a lot of disturbances, such as the melting formed by the collision between asteroids, the heat from the asteroid itself, and the collision from the cosmic celestial bodies, as well as the gravitational influence from Mars, which will make the asteroid extremely unstable, so there will be many meteors from asteroids on the earth every year.

The spacecraft that explored the asteroid belt this time was called Explorer 2 due to its size, and the spacecraft that explored Venus before was called Explorer 1.

The captain of the Explorer 2 spacecraft is called Geng Mingzhong, he was also an officer of the Vermilion Bird Army of the Ming Empire, and also participated in the war with the Ruhrs, and performed well in the war, and then when he studied at the academy with the captain of the Vanguard, Wasp, he also performed extremely well, so he was selected as the captain of the Explorer 2.

After Explorer 2 entered the asteroid range, Explorer 2 turned on all the detection equipment on the spacecraft, and also activated all the weapon systems on the spacecraft, after all, sailing in the asteroid belt is not as good as anywhere else.

And when he was about to enter the asteroid belt, he also launched hundreds of small probes into the asteroid belt, and the main role of these probes is to detect various radiation, temperature, and physical composition of the asteroid.

After all, the asteroid belt is too close to Jupiter, and Jupiter is the most terrifying planet in the entire solar system except for the sun, so Jupiter's impact on the asteroid belt is also very large.

Although the current material of the asteroid belt is only one thousandth of its heyday, the material is very thin, and Explorer 2 has thick armor, and the generally small asteroid is not much danger for Explorer 2, but Geng Mingzhong still does not dare to take it lightly, after all, the speed of the Explorer 2 spacecraft is very fast now.

Most of the asteroids in the asteroid belt are still quite deadly threats to Explorer 2, so now all the weapons on Explorer 2 are ready at all times, and once they find an asteroid that threatens the spacecraft, then they will destroy it immediately.

Therefore, at this time, the orbital data of all asteroids within tens of thousands of kilometers from Explorer 2 are in the large computer inside Explorer 2.

If the computer calculates that there are asteroids that are a threat to Explorer 2, the weapon system on Explorer 2 will destroy these asteroids immediately, and there may be some asteroids that are still a little far away from Explorer 2, and the threat to Explorer 2 is not very great, but these asteroids still have a certain threat to Explorer 2, especially if the orbit of these asteroids changes, then it will directly collide with Explorer 2. So such a situation is something that the people on board do not want to see.

In the following days, Explorer 2 has been sailing in the asteroid belt, and during this time, Explorer 2 has launched hundreds of exploration satellites into the asteroid interior, but their harvest is also very large, they found that the entire asteroid belt is very rich in metal resources, especially some precious metals, as well as rare metals.

For example, during this time, they have discovered several asteroids composed of pure gold and diamonds in the interior of the asteroid belt.

Although the Ming Empire no longer implements the gold standard system, gold is still a very valuable heavy metal, and now due to the development of science and technology in the Ming Empire, gold and diamonds are needed in many industrial fields, although now the Ming Empire can artificially create diamonds that are exactly the same as natural diamonds.

But the amount of money needed is very much, and it is very uneconomical, not to mention gold, after all, gold is an element of nature, so it is impossible to create gold out of nothing with the current technology of the Ming Empire.

As a result, the price of gold and naturally occurring diamonds is still very expensive, and even higher than it was 20 years ago when the earth was on the gold standard.

And the value of each moment of these asteroids, which are made up of high-grade gold ores, is now immeasurable.

However, although they found that the volume of these asteroids is not very large, it is still very difficult for the current Ming Empire to move these asteroids to the moon for mining and smelting, and most of the other spaceships in the current Ming Empire except for the Pioneer and Explorer 1 and Explorer 2 do not have the ability to sail, so it is unrealistic for these three research ships to move these asteroids alone.

So the staff on the spacecraft can only sigh and continue to explore the asteroid, although gold is no longer pegged to the currency, but so much gold and diamonds still have a considerable impact on them, and now they can see but not have their mood can be imagined.