The photos are out.

It is a pale blue planet, with green vegetation, a huge ocean, and snow-capped mountains...... When I saw this photo, the generations behind me didn't have much feeling, but this scene made huge waves in the hearts of the first generation of new civilized citizens. It's a replica of the Earth!

Not only these natural phenomena, but also the traces of civilization can be easily observed by humans.

City, real city!

Residential areas, like farmland, are distributed in blocks

There is also a large device the size of a swarm of ants, floating in the air, traveling to and from various regions, and it should be the so-called means of transportation - empty boats!

An old expert in astronomy looked a little excited and said: "It seems that real modern technology has been developed, but the gravitational pull of the planet is too high, and this civilization has not explored the universe." ”

“…… Instead, a transportation network centered on empty boats has developed. ”

These scientists were discussing feverishly and writing astronomical reports.

"Don't you have satellites?"

"Yes, not even space junk. There should be no more satellites. ”

"The potential of a civilization has been stifled by the planet itself, what an unlucky civilization......"

“…… I don't know if the enlightener civilization has left any traces on this planet? With the wisdom of the enlighteners, they should have known that this civilization would encounter such a situation. ”

Since your own strength is far stronger than the other party's civilization, you have nothing to worry about.

Dealing with a civilization with modern technology is still a very interesting and desirable thing. However, because of gravity, it is impossible for humans to land on the ground for field investigations, which is also the limitation of the species itself. Otherwise, many people still want to go down and travel in person.

I saw the astronomer write on the report: "...... The surface of Tepu is blue and mostly oceanic, with 82% of the planet occupied by oceans and only 18% of the planet being land and glaciers. ”

"The huge ocean causes very much precipitation on the planet's surface and vegetation grows vigorously. The average temperature is around 30 degrees Celsius, and there are huge glaciers in both levels......"

The larger the ocean, the more precipitation will be. Conversely, if the ocean covers only 60% or even 50% of the planet, the probability of a large desert on land will increase exponentially.

"We have observed the existence of the native civilization of Tep. According to satellite observations, the civilization is generally not tall, about 1.7 meters long, muscular, and walks like an orangutan, that is, two forelimbs can assist in walking...... Probably because of the high gravity, the specific body structure remains to be investigated. ”

“…… Wearing clothing may be culturally similar to that of humans. ”

There are some civilizations that don't wear clothes. For example, the Bhatit civilization imprisoned in the virtual world has no gender and no sense of shame between men and women.

The etiquette of meeting each other is the exchange of germ cells.

The Badit are very physically strong and do not need to wear clothes to maintain their body temperature.

As for the spacesuits they were wearing...... That's another thing, it's not considered normal clothing.

The Riley people, who had visited the religious civilization, did not wear clothes because they were still in primitive times, they were too poor to wear clothes, and they did not need clothes to protect them from the wind and rain in the warm climate.

The nobles of the upper echelons of the Riley civilization had some simple decoration habits, especially the metal ornaments and some fabrics that humans traded to them, so that they developed a certain degree of clothing habits.

Just kidding, without clothes, to be a nobleman, is simply a symbol of decline and tastelessness!

The Tepu civilization in front of us seems to be wearing clothes, and there may be similarities with humans from a cultural level.

“…… Due to the different planetary environments, the planet has developed a scientific and technological system with airships and ships as the main means of transportation. Different from the traditional land transportation on the earth, due to the high performance of the material, the land transportation is not widely used. ”

That is, the land means of transport of this civilization, not for nothing, but not for mass use.

This kind of thing can be known almost without thinking about it, in a gravity environment of 3 times, the weight of 1000 catties becomes 3000 catties, and even if an ordinary car can be started and does not carry any goods, it is directly overweight.

If you use rubber tires, which are very common and cheap for humans, the probability of tire punctures will be greatly increased. Bridges and the like are also prone to collapse, and the material properties of the so-called reinforced concrete will not be enhanced by the high gravity of the planet.

In particular, single-column pier bridges are more likely to roll over due to unbalanced pressure distribution.

The train can barely move, but it can only carry less than one-third of the earth's train, otherwise the wear and tear of the tires and the rails will increase significantly......

If you load too much, you might be squashing the rails!

The same is true for maglev trains, the requirements for materials have been greatly improved, this civilization is not like humans, it has developed to a third-level civilization, and they do not have super-magnetic-A materials. Even the new humans could not have the luxury of applying the Super Magnet-A to the maglev train.

On the other hand, there is no doubt that the air will be more buoyant when the air pressure is higher. The proportion of the increase in the air pressure of this planet is greater than that of the gravity, so the airboat has become a very suitable means of transportation.

The main transportation system, with small airboats as the core, appears on this planet, and short-distance transportation is done by airboats...... From a certain point of view, this civilization can be called an airship civilization.

As for long-distance traffic, of course, it is a large steamer. The buoyancy of the water is the same as the weight of the water discharged, and the buoyancy increases as the gravity of the planet changes. A piece of wood thrown in the Earth's ocean will float, and if it is thrown in the ocean of Tep, it will float as well.

Therefore, there is no problem with the ocean-going giant ship as a means of transportation, and the performance requirements for materials are not high, so it has naturally become the first choice for long-distance trade.

Soon, this detailed astronomical report was passed on to the captain's room.

Zhang Yuan discussed with his companions for a long time with great interest, and generally believed that the scientific and technological strength of this civilization was about between the 20th and 21st centuries of mankind......

The tech tree looks a lot crooked, and it remains to be seen how it will be.

Li Zhendong frowned and said, "There is a high probability...... Controlled nuclear fusion technology has not yet been developed, there are no satellites, it is difficult to say whether there is an Internet or not, but radio technology should have been developed. Radio communication is also widely used. ”

"Our satellites have captured some of the exposed radio waves...... The people in the research institute are analyzing these electromagnetic waves, which should be a global digital cipher, not very encrypted, and if you can directly decipher the language, it will be a lot less troublesome. There are also some very traditional telegrams. ”

Although he is retired, he is also a veteran expert in codebreaking. In many cases, young people are not necessarily as good as experienced experts.