Chapter 206
Zhang Yuan carefully pondered these astronomical data, he saw a circle of yellow on Gliese 581g with purple things vaguely. This circle of yellow and purple are widely distributed in the twilight line, which seems to be very neat and does not appear to be naturally occurring.
Because the spaceship is still seven astronomical units away from the planet, the resolution of the photo is not high, and I don’t know what it is.
"Professor Fan, have you found traces of the activities of intelligent life?" Captain Zhao also saw this photo, pondered for a while, and asked.
The astronomer immediately replied: "...for now, no intelligent life has been found. The probe we launched is still on the journey. But for now, no regular electromagnetic waves have been found in the universe. "
"Neither artificial satellites nor large-scale buildings on the surface have been observed..."
Zhang Yuan couldn't help asking: "Then what are these yellow ones? Such a regular world Sexual wonder, the impossible is naturally formed, right?"
Professor Fan said: "These unusual colors are likely to be a large number of alien plants, but the colors are slightly different from those on Earth. The large tracts of our primitive forest in Earth are green, and the plants here are yellow and purple......"
"We suspect that these lives don’t need oxygen, and they obtain energy through reactions such as sulfur oxide and nitrogen oxide. This way of breathing is fundamentally different from our aerobic breathing."
Alien life?
Zhang Yuan's heart throbbed, and many people sitting around couldn't help but discuss in a low voice.
Especially some biologists, compared to the sense of crisis, on the contrary, the sense of excitement is the most. For them, any bit of extraterrestrial life has a strong reference to issues such as the origin of life. Meaning.
"These planets have been locked by the tides. The side facing away from the star is too cold, and the side facing the star is too hot. The dusk line is neither cold nor hot, which is a very good place to live. "
"The large life community located on the dusk line can be exposed to eternal light and the temperature is suitable..."
"The strength of life is incredible."
"Cough cough, please be quiet. In a few days, the satellite will be able to transmit back first-hand data... But I think..."
The professor said a lot. What he meant was that according to the current data, the probability of not having intelligent life is greater. Even if there is intelligent life, it is likely to be some indigenous people, and it is not to be feared.
Anyway, as long as these lives do not have the ability to threaten humans, there is nothing to worry about.
After the development of and the others category reaches a certain stage, it is definitely necessary to conduct a more detailed field investigation on the life of this planet.
Zhang Yuan and many of you here followed sighed slightly in relief. What they worry most is that this Star Domain already has a strong interstellar civilization...Even if the probability is small, once this civilization Existence, their boatman will undoubtedly become a turtle in the urn.
"It is always impossible to have a civilization. It can develop into the space age without electromagnetic waves or satellites, right?"
"Yes."
Listening to the discussion, Zhang Yuan stood up and said: "For the sake of caution, we still have to shield the Wireless Electronics wave of spaceship itself as much as possible until more specific information appears."
This The proposal was quickly adopted unanimously.
Next, after a series of discussions, combined with the various machinery and equipment carried on the spaceship, everyone selected the satellite 1, which is the closest to Gliese 581g, for development.
The six major planets are called b, c, d, e, f, g, etc., which are named in the order in which they were discovered by humans. However, the satellites attached to these planets are not named. For the sake of simplicity, people directly call the largest satellite of 581gplanet, No. 1.
This satellite is nearly 4,000 kilometers in diameter. It is bare, and its surface is full of craters. Its revolution period is about 14 days.
In addition to the tide lock, its rotation period is equal to the revolution period.
The reason for choosing satellite 1 is that it is at a moderate distance from the star. Even if the star erupts with flares, the spaceship will not be too much affected. And theoretically, according to the formation conditions of the planet, it has all the resources needed by mankind, including various common metals, rare elements, radioactive elements, and so on.
The only shortcoming is that it is relatively close to the life planet, and there may be some potential threats. Life always has endless possibilities, who knows what weird lives will be inside.
However, the distance between the satellite and the planet is a full 360,000 kilometers. If something really happens, there will be time to react. Zhang Yuan doesn't believe that any creature can break free from the gravity of the planet and jump onto Earth Era with its own body.
So, being closer to the life planet is not necessarily a disadvantage. On the contrary, it may also be an advantage. At least it will be much more convenient for future scientific investigations.
Compared with other planets, there may be deficiencies that are difficult to make up. No. 1 is already a pretty good planet.
"But Old Zhang, at this rotation speed, if a space elevator is installed on this planet, the height of the synchronous orbit will be very exaggerated!"
Ye Kaifu is under the seat He whispered: "The rotation speed of this planet is too slow. I just calculated it casually. The height of the synchronous orbit is over 80,000 kilometers. We didn't carry that many raw materials...what should I do?"
"No, you are wrong..."
Zhang Yuan laughed, pointing rightly: "In this case, the laying of the space elevator must also consider the huge gravitational force of another planet. So, Our spaceship will not stay in the synchronous orbit directly..."
"You can calculate again, the gravity of the satellite, cancel out the gravity of the planet, and then use the rest for calculation..."
"It makes sense!"
Ye Kaifu suddenly realized, "I haven't touched this stuff for several years. I have forgotten a little bit. Fortunately, I didn't directly ask a question, otherwise I would be embarrassed."
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He calculated it carefully, and it took only 8,000 kilometers to get the orbital height, and he couldn't help but secretly pleased.
This distance is good, and the construction difficulty of the space elevator is greatly reduced, so there is nothing to worry about.
As for the energy issue...
"The planet should be able to find enough uranium mines to support human development in the first few steps."
Moreover, sufficient light In the case of, you can consider laying solar panels on the sunny side of the planet to replace nuclear energy. Solar panels are a very cheap and simple technology. Zhang Yuan feels that with the equipment currently carried by the spaceship, it can be mass-produced in one or two years.
After some discussion, Captain Zhao was proud of ten thousand zhang and said: "...Then it is so decided, to open our first landing site on satellite 1!"
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