The Technology Tree of Xueba

On May 1, 2029, the weather was cloudy. Zhou Yu and Xinghuo scientists had already put on their space suits, and they were about to land on the Endeavor spacecraft.

Zhou Yu comforted Chen Jin who was seeing him off at the door of the Endeavor spacecraft: Xiao Jin, don't worry!

The safety performance of the current spacecraft is very good. The spacecraft has withstood tens of thousands of flight missions without a single accident.

The safety performance of spacecraft is more advanced than that of high-speed trains, and it far exceeds the safety of old-age cars.

When I go on a scientific research mission, I don’t live in space permanently, and I will come back within a few days or a month or two at most.

Zhou Yu, you must come back safely. The children and I will wait for you at home. Chen Jin held back tears and waved goodbye to Zhou Yu.

Start boarding. Zhou Yu ordered.

The scientists of Xinghuo Technology, the basic personnel of the spacecraft, and the logistics personnel began to board the ship in batches.

The Endeavor spacecraft began to suspend in the air, accelerated rapidly with the help of the sun's gravity, and soon disappeared into the space of the earth.

The Endeavor spacecraft is a scientific research ship, and most of the main equipment it carries is used for scientific research activities.

Zhou Yu held a meeting inside the Endeavour.

Our goal this time is the asteroid belt. We will first go to the center of the asteroid belt to investigate the only dwarf planet Ceres there.

After inspecting Ceres, collect some resources and specimens from the asteroid belt, and complete the preliminary exploration of the asteroid.

Zhou Yu's target this time is the asteroid belt, which is an airspace in the solar system where resources are relatively concentrated.

Most of the resources in the asteroid belt still exist in the form of asteroids. They are very easy to screen, and it is not difficult to smelt such resource-rich asteroids.

The Endeavor spacecraft flew out of the orbit of the earth, and with the help of the gravity of the sun and Jupiter, it began to gallop towards the asteroid belt.

Scientists look at data from the asteroid belt.

The asteroid belt is the asteroid-dense region of the solar system between the orbits of Mars and Jupiter.

The asteroid belt is the most densely populated area of ​​asteroids, accounting for 98.5% of the number of asteroids in the solar system, and it is estimated that there are as many as 500,000 asteroids. This area is therefore called the main belt.

In the space area about 2.17~3.64 astronomical units away from the sun (one astronomical unit is equal to 149597870700 meters, which is about the distance between the sun and the earth).

More than 500,000 asteroids gathered to form the asteroid belt.

With so many asteroids able to be condensed in the asteroid belt, Jupiter's gravity plays a bigger role than the sun's.

The asteroid belt formed from a population of planetesimals (precursors of planets smaller than planets) in the primordial solar nebula.

However, due to the influence of Jupiter's gravitational resonance, these planetesimals are prevented from forming planets, causing many planetesimals to collide with each other and form many debris and debris.

The three largest asteroids in the asteroid belt are Pallas, Juno and Vesta, all with an average diameter of more than 400 kilometers.

There is only one dwarf planet in the main belt, Ceres, which is about 950 kilometers in diameter.

The rest of the asteroids are smaller, some the size of dust particles.

The material in the asteroid belt is very thin, and the asteroids in the main belt are divided into three categories according to their spectrum and main form, carbonaceous, silicate and metal.

In addition, collisions between asteroids may form asteroid families with similar orbital characteristics and coloration, and these collisions are also the main source of the dust that produces the zodiacal light.

Asteroids carry four of the most common asteroid star groups, which are carbonaceous asteroids, silicate asteroids and metal asteroids, and comet asteroids.

The vast majority of asteroids in the asteroid belt are carbonaceous and silicate asteroids.

On the outer edge of the asteroid belt, those close to the orbit of Jupiter are dominated by carbonaceous asteroids, which account for more than 75% of the total.

Compared with other asteroids, the color is reddish and the albedo is very low. Their surface composition is similar to that of carbonite meteorites. The chemical composition and spectral characteristics are all in the early solar system state, but they lack some lighter and volatile substances such as ice.

The part near the inner side is 2.5 AU from the sun, and silicate asteroids are more common.

Spectra show silicates and some metals on the surface, but carbonaceous compounds are not evident.

This shows that their composition is significantly different from that of the original solar system, which may be the result of differentiation due to the early melting mechanism of the solar system.

Compared with carbonaceous asteroids, such asteroids have a high reflectivity. About 17% of the entire population of the asteroid belt.

There is also a third class of asteroids, accounting for about 10% of metallic asteroids in total.

Their spectra contain iron-nickel-like spectral lines, appearing white or slightly red, without the characteristics of absorption lines.

Metal asteroids are presumed to be formed by catastrophic impacts on a matrix whose core is mainly iron-nickel. In the main belt, metal asteroids are mainly distributed in orbits with a semi-major diameter of 2.7 AU.

Metallic asteroids are people's favorite asteroids, and they're literally a moving lode.

The speed of the Endeavor spacecraft is very fast. They have only traveled for half a month, and they are already close to the edge of the asteroid belt.

Here, the Endeavor spacecraft has been able to clearly receive the satellites placed in the asteroid belt in the early stage and send back signals.

The high-definition camera on the satellite can clearly capture the true face of the asteroid.

The surface of many asteroids is rugged, covered with large and small impact craters, and there are many boulders of different sizes on the surface.

Like Earth, asteroids have many grooves, rifts and fissures.

And unlike the vast majority of grooves, fractures, and fissures on Earth, they were formed by violent collisions.

Satellites deployed in the asteroid belt, they even sent back a wonderful video.

In the center of the asteroid belt, disturbed by Jupiter's gravity, a carbonaceous asteroid and a metal asteroid collided.

These two small stars collided together to form a slightly larger asteroid, and a lot of matter broke off and floated in the universe.

This is a very common scene in the asteroid belt, which is mainly affected by the gravity of the sun and Jupiter, and collisions between asteroids often occur.

Different asteroids that collide have different outcomes.

Most collisions result in two asteroids smashing apart, forming more asteroids.

As a result of only a small number of collisions, it can allow two asteroids to fuse with each other to form a larger asteroid.

The Endeavor spacecraft will soon fly to the asteroid belt, and it will shuttle between the asteroids flexibly.

Regardless of the large number of asteroids in the asteroid belt, it also occupies a very large area, and the gaps between the asteroids are large.

Some asteroids with small gaps have smaller volumes.

The Endeavor spacecraft moved around to avoid larger asteroids, even if a tiny asteroid hit the spacecraft, it would not harm Endeavor.

The spacecraft is moving rapidly in the direction of Ceres.