super robot clone

asteroid belt.

In the solar system, in addition to the eight large planets, there are thousands of small celestial bodies that are invisible to our naked eyes.

Like the eight major planets, they revolve around the sun continuously along elliptical orbits. Compared with the eight major planets, they seem to be insignificant broken stones. These small celestial bodies are the asteroids in the solar system.

Among them, the vast majority of asteroids are gathered in the vast space between Mars and Jupiter.

There are more than 50 asteroids here.

There are also a small number of asteroids whose orbits are smaller than Mars, or even smaller than Venus; the orbits of other asteroids are beyond the orbit of Jupiter.

The origin of asteroids has always puzzled many scientists.

Some early explosion theories believed that there was a large planet between Mars and Jupiter, which exploded later, and the asteroid belt is the debris after the explosion of the large planet.

But why did this hypothetical giant planet explode?Where does energy come from?There has been no reasonable explanation for this question.

Another theory of collision assumes that in the space occupied by the asteroid belt, there were originally 5 to 10 "planets" of the same size as Ceres, which formed a large number of debris due to continuous collisions.

However, with the continuous improvement of astronomical observation technology, scientists generally believe that the asteroid belt should be formed by a group of planetesimals (predecessors of planets smaller than planets) in the original solar nebula.

However, Jupiter's gravitational influence prevented these planetesimals 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, with an average diameter of more than 400 kilometers; there is only one dwarf planet in the main belt, Ceres, with a diameter of about 950 kilometers ; the rest of the asteroids are smaller, some as small as dust particles.

In people's established impression, the asteroid belt should be an area with extremely dense distribution of matter.

But in fact, the material in the asteroid belt is very thin, and they are often separated by hundreds of thousands of kilometers. Today, humans have had several man-made space probes safely pass through the asteroid belt without any accidents.

Asteroids in the main belt are generally divided into three categories according to their spectrum and main form: carbonaceous, silicate and metallic.

This time, what Chen Xin had his eyes on was an asteroid with the astronomical code name Mathilde, mainly composed of iron and nickel.

At this time, the Mathilde asteroid is orbiting the sun along the ancient trajectory, following the mighty asteroid troop.

From here, the sun has become the size of a softball, and the cold light shines through the portholes into the cockpit of the Dream, without feeling the slightest warmth.

The originally opened light sail of the Dream spacecraft has retracted at some point, and the blue flame at the tail nozzle of the spacecraft is slowly extinguishing. The Dream relies on its own inertia to maintain a parallel speed with the Mathilde asteroid.

The Mathilde asteroid is 6.4 kilometers long and 2.8 kilometers in diameter. Its mass is only 2.9*10^9 tons, which is far from making it reach hydrostatic equilibrium. , a dumbbell-shaped concave in the middle.

The density of the Mathilde is relatively uniform, and the figure is relatively well-proportioned, which is one of the reasons why Chen Xin chose this asteroid.

The attitude engine on the "Dream" spacecraft started slowly, and the Dreamer landed on the Mathilde like a light feather.

Due to the very limited gravitational force of the Mathilde, the Dream had to protrude four probes from the underside of the belly, rotating at a high speed, and nailed deeply into the interior of the Mathilde, connecting the Dream and the Mathilde. Hold together firmly.

The steel turning into a pile of liquid metal fell silently from the Dream space plane and penetrated directly into the interior of the Mathilde.

From the moon to the asteroid belt, the one-month voyage seems a bit long, but Chen Xin and Gang Yan are not idle.

Aiming at the characteristics of the Mathilde asteroid, they conducted a large number of simulations and calculations on the computer.

In order for the Earth and the Mathilde to join forces smoothly in three years, the orbit on the Mathilde must be continuously corrected, but to push an asteroid of more than 20 billion tons out of its original orbit, it takes The thrust is also extremely terrifying.

Therefore, Gangzhu decided to use local materials and directly use the iron-nickel ore on the Mathilde to manufacture non-propellant engines.

Although the thrust of the solid hydrogen-oxygen fuel engine per unit time is greater, the specific impulse of the non-propellant engine is higher, and no fuel is used.

At that time, it is only necessary to build a super-large nuclear fusion power unit on the Mathilde.

According to the calculations of steel pennies, at least six to eight heavy-duty engines with a thrust of more than 100 million tons can be installed at least at some key points on the Mathilde to complete the original goal.

Of course, it is far from enough to rely solely on the materials on the Mathilde. Fortunately, the asteroid belt is rich in resources. Chen Xin drove the Dream space plane back and forth near the Mathilde for nearly an hour. Last week, many asteroids containing rare metal resources were captured. The small ones were only the size of rocks and nearly [-] meters in size, which barely made up enough raw materials for nuclear fusion reactors and engines.

At this time, the steel 镚 has completed the installation of the base on the Mathilde asteroid, and the remaining work will only take another half a month to complete.

Fortunately, after devouring a lot of calorie metals on the moon, the ability of the steel to purify and manufacture metals has been greatly improved. Otherwise, according to the previous efficiency and such a large workload, even if the steel is given half a year, it may not be able to do it. arrive.

While Chen Xin was busy here, the work on the earth did not stop.

Once the world's top ten economic and military countries are united, their strength and work efficiency are also extremely amazing.

After the United Nations reform plan was passed, countries immediately announced the establishment of coalition forces, stationed in the Middle East, and encircled and suppressed IS.

The PLA dispatched [-] troops in this battle, including the navy, land and air forces, and became China's largest overseas military use case since the Korean War.

The Somali army, which has just completed reorganization, will also join the joint operations of various countries. The unmanned fighter jet unit of the Somali Air Force will become the strongest air support force for this joint operation.

According to the agreement of various countries, after this war, all troops participating in the war will automatically become members of the United Nations Army.

In addition, various countries have also launched severe crackdowns on cult organizations within their respective borders to prevent some cult organizations from waiting for opportunities to cause chaos after the news is announced. (to be continued~^~)