Chapter 205

When he walked into the conference room, he found that many experts present were happy and the atmosphere of discussion was very warm. Zhang Yuan quickly found a seat and sat down.

"Please take it easy! The most important thing is to select a planet suitable for development as our main development base... At present, there are six planets observed, including a large number of satellites, there are more than ten planets to choose from, but we must find the best and most suitable for development! "

In the large conference room, Captain Zhao said solemnly, but the excitement in his tone was hard to hide.

"... don't take it lightly. Next, whether it is economic development, population growth, industrial development, or the promulgation of various policies... "

"Our task still has a long way to go!"

All the members in the conference room rubbed their hands and a heated discussion broke out.

Various policies, including economic policy, cultural policy, social welfare, work plan, etc., have been discussed for a long time and have been basically completed. Anyway, it will be issued step by step.

Now the most important thing is to choose the planet, the most important step.

The mass of this central star is only 0.31 times that of the sun, the surface temperature is about 3200 degrees Celsius, and the light intensity is only 1.3% of that of the sun. Because the gravitational attraction of stars is small, the distribution of six planets is closer to stars, which is a bit like a solar system reduced by one.

According to astronomical data, the two outermost planets are wooden like planets, that is, gaseous planets. Their mass is relatively large, and there are several satellites with thick ice around them.

The other four planets are all earth like planets.

The formation of such a structure similar to the solar system is mainly due to the "nebula theory".

Inner galaxies are too hot for smaller molecules such as water and methane to gather. Therefore, the regions close to stars can only be formed by substances with high melting points, such as iron, nickel, aluminum and stone silicate.

Wooden like planets are formed beyond the freezing line, and these planets are rich in water resources. Because the vast majority of elements in the universe have small atomic weight, the mass of these wood like planets can often grow large enough. When the mass grows large enough, they can capture the lightest and most abundant elements such as hydrogen and helium, making the mass larger.

In essence, a woodlike planet has a rock core in its center, but its atmosphere is thick enough to cover up the core.

After a few minutes of discussion, soon an astronomer stood up and said, "everyone, please listen to me first!"

The meeting room gradually quieted down.

"If you choose a satellite of a gaseous planet as the landing point, for example... This satellite."

The screen shows a huge ice hockey with a diameter of about 3000 kilometers, which is a bit similar to Europa.

”... we can easily access more nuclear fuel and water resources. Like the Europa industrial base of our solar system... "

"At present, after a series of deceleration, the fuel reserve in the warehouse is not sufficient, which is lower than 8% of the reserve line..."

"The mass of the earth times is too great. Every time the Mothership is moved, it will cause a huge consumption of fuel. Therefore, I suggest that the first site selection of the base must be selected. "

"Of course, if the main base is selected, these nuclear fuels can be used for about 3000 years according to the current power consumption level."

Zhang Yuan frowned.

The figure of three thousand years sounds exaggerated, but the premise is the current level of energy consumption.

With the rapid development of industry, the use of electricity is bound to rise exponentially, and these nuclear fuels will soon be insufficient. For example, the energy consumed by metal smelting and industrial production is huge, and the increase of population will also consume more energy. At present, it is only the lowest living standard.

The astronomer continued: "if you rely on a wooden planet to act as a nuclear fuel bank, of course, you don't have to worry about energy."

"However, the satellites of wooden like planets are chosen as landing sites. Due to the formation of these planets, there may be a lack of some minerals with heavy atomic weight, such as rare metals, such as scandium, yttrium and lanthanides."

"The lack of these elements will cause great obstacles to the development of industry. We can never dig deep into the earth's core, either technically or economically. "

Sitting aside, engineer Ye Kaifu tapped the table with his fingers and was thinking about his gains and losses. "I prefer more accessible resources than more accessible energy," he whispered

"Nuclear fusion is not necessary for energy. Fission energy is also possible... Even solar energy! Don't think nuclear fusion is bigger than nuclear fission. "

"I think so too... Energy, only economic and cheap is the most appropriate." Zhang Yuan nodded.

The scientist on the stage continued: "the second choice is the two inner planets. Especially the planet closest to the star, it's not too much to call it a metal planet! "

"We can easily find all the scarce metal elements."

However, the planet also has disadvantages. There are few water resources and lack of organic matter. Whether there is uranium ore is another matter.

"... it has to be said that the central star is a variable star with unstable brightness and electromagnetic radiation, and flares will erupt from time to time. The revolution cycle of this planet is very short. It only takes four days to circle the whole star. It is very close to the star. The economic losses caused by stellar flares must be taken into account... "

These are difficulties.

Zhang Yuan frowned. When stars erupt, as long as the defense measures are well done, there is no big problem. The most troublesome thing is that all kinds of remote communication will be interrupted immediately. If communication is interrupted while performing an important task, the loss will be great.

"... as for the two planets that seem to have a lot of water resources and atmosphere and are located in the habitable zone, they are not in our consideration for the time being."

"However, there is a third option. We can consider a satellite of Gliese 581g."

"One of the satellites is about the size of the moon... Even a little bigger!"

A pitted planet appeared again on the screen.

The members of the Scientific Council are more rational people, although the two planets have a large amount of liquid water, which looks beautiful and suitable for human survival. Even one of them, 581g, is an enlarged version of the earth from a certain point of view!

Many people have been on the Internet, cheering that they want to travel to other planets.

But

According to atmospheric spectral analysis, the concentration of highly toxic gases mixed in the atmosphere, including hydrogen sulfide and sulfur dioxide, is as high as 0.02%! That's enough for humans to eat a pot of.

Moreover, the mass of this planet is 3.1 times that of the earth, and the atmospheric pressure is about 1.7 times that of the earth. Under this atmospheric pressure, human beings will feel very uncomfortable and must wear spacesuits at any time to ensure normal survival.

Therefore, since there is no way to breathe the surface air freely, we still have to carry all kinds of survival instruments. It is better to land on a planet without atmosphere and easy to develop.