Time flies, tossing and turning.

Two years on!

The current situation in the southeastern region of the mainland can be described as wonderful.

But none of this has anything to do with the people on the Star.

The satellite launch program has not yet been completed.

Because Chen Sheng overturned the conjecture that this world is a world with round heavens and a round place, and established the conjecture of the underground world.

A lot of data has to be recalculated.

Fortunately, Chen Sheng is now climbing the spiritual power technology tree, and has many spiritual power classics collected by the Wanjie Mall, as well as the existence of Xiao Xingchen, a cheating spiritual power computer.

Standing on the shoulders of giants, everything is better than starting from the beginning.

Night!

The deck of the Star was particularly lively, and the spacious flight deck was full of people.

Because today Chen Sheng wants to measure again, the height of the sky in this world.

It provides accurate data reference for the thorough finalization of rocket satellites.

According to the Wanjie Mall, Chen Sheng received many ancient records, and learned that there was a stone world at the end of this world.

The conjecture of the underground world only appeared in Chen Sheng's mind.

Although Chen Sheng had measured the distance between heaven and earth not long after the development of laser weapons.

But the height of the sky is not the same in each location of this world.

In particular, the launch site selected by Chen Sheng is located just below the solar trajectory of this world, that is, on the equator of this world.

Theoretically, the sky is the highest place, so the height of the sky needs to be accurately measured.

Qin Yueyao, Qin Xueyan, Wan'er, Tie Sao, Ling Yunzi, Zheng Shi, Tie Tower, Tiancheng Wuzi, the seven-person flying team led by Luo Gen, the 25-member maid logistics team led by Wu Mei'er, and the 48 orphans adopted by Chen Sheng when he passed through the Southern Song Dynasty all came to the deck of the Xingchen.

Everyone was curious about how high the sky was.

"Xu Fu! Adjust the laser emitter angle! ”

Chen Sheng shouted at an eleven or twelve-year-old boy.

"Understood, Captain!" The boy is full of energy.

After Chen Sheng fought with the Eastern Qin ancestors, he retreated through the Southern Song Dynasty.

In order to visit the Lu family, Chen Sheng specially sent an early warning aircraft to conduct a reconnaissance of the Lu family in the Southern Song Dynasty.

It turned out that the Lu family actually had a prefecture-level powerhouse in charge.

It was not too late for the gentleman to take revenge for ten years, and Chen Sheng decisively gave up his plan to visit Lu Youcai.

It's a big loss to run for nothing!

So Chen Sheng hid the Star safely behind a small mountain range.

A number of reconnaissance planes equipped with advanced formation telescopes were released.

Began to search for orphans of good character in various cities in the Southern Song Dynasty as a reserve for the Xingchen.

If you want to develop the Star into a star warship.

Relying solely on Chen Sheng, Ling Yunzi, Master Zheng, and Xiao Xingchen to slowly climb the science and technology tree, I don't know what year and month it will be.

If we cultivate a group of Xingchen's own scientific research team, this process will be much easier.

There is also a shortage of combat personnel on the Star.

The last time I fought with the Eastern Qin Ancestor.

After the seven Rogan were sent out to bomb the Eastern Qin Palace, there were no more people to fly fighter planes and reconnaissance planes.

I also want Xiao Xingchen to be multi-purpose and temporarily replaced.

It is urgent to expand the size of the team of the Stellar!

Feel free to solicit, people's hearts are complicated!

Chen Sheng, who has been cultivated since childhood, is much more relieved.

And when adopting these orphans, each orphan was actually secretly observed by the people on the Star for a period of time.

After determining its character, it will be carried to the Star number.

Of dozens of cities, only 48 people were favored by Chen Sheng.

The orphans, both male and female, were divided into four teams by Chen Sheng.

Among them, the 21 people who are most interested in mechanisms (mechanical physics), formation (energy patterns), alchemy (material transformation), and are trained by Chen Sheng as scientific research assistants, and look forward to forming the strongest scientific research team on the Star in the future.

The other 21 were incorporated into Logan's fighter flight squad and prepared to train to become fighter pilots.

If the future mecha is successfully developed, the mecha pilot will also have their share.

The remaining 6 people and the tower form a team of gunners, who are responsible for controlling the defensive weapons on the Star (laser cannons and fire cannons).

On deck at this time.

Xu Fu, who is assisting Chen Sheng and others in debugging equipment! It was the smartest of the 21 scientific research assistants who was specially allowed by Chen Sheng to participate in the measurement.

And Xu Fu is not his real name, his original name is Xu Goudan.

Chen Sheng felt that this name was too slight, so he renamed him Xu Fu with a wicked taste.

With the cooperation of Chen Sheng, Ling Yunzi, Zheng Shi, Xiao Xingchen, and Xu Fu, the heaven and earth survey plan is in full swing.

In fact, it is very simple to know how high the sky is.

Laser ranging!

Because of the speculation of the underground world, Chen Sheng believes that the sky of this world is also composed of rocky and hard rocks.

Shoot a laser into the sky, and then look through an astronomical telescope to observe the time it takes for the laser to reach the sky to reflect light, divide this time by two, and multiply it by the speed of light.

Even though the composition of the air in this world has changed, it has little effect on the speed of light propagation.

"Laser emitter adjusted!"

"The observation equipment is debugged!"

"Everything is working with the ranging system!"

"Start measuring!"

With Chen Sheng's order, several pillars of light went straight to the sky.

Deck side.

On the screen formed by the projection of the soul of the little star, two numbers appeared: 3150.47 kilometers and 6301.14 kilometers.

"What's going on?" Chen Sheng asked solemnly.

Sky ranging, Chen Sheng and others measured several times soon after the development of the laser cannon, and the sky height measured in various places is different, most of them are hovering between 5500 kilometers and 6000 kilometers.

And 3,150 kilometers is an abnormal number in Chen Sheng's opinion.

"Daddy, this number is derived by a laser shining on the stars." Xiao Xingchen immediately checked out the reason.

"The height of the stars is not the same as the height of the sky! The stars are suspended under the sky. ”

Getting this result, Chen Sheng was suddenly shocked in his heart.

Chen Sheng hadn't paid attention to measuring the height of the stars before.

"Change the equipment and measure a few more times!" Chen Sheng suspected that there was a problem with the equipment, and re-measured it several times.

"Daddy! The result is still the same! Xiao Xingchen replied again.

Chen Sheng mentioned from many ancient books that the world of this world is composed of stone walls, so he guesses that this world is the underground world.

Then the sky should also be composed of stone walls, and the so-called stars should also be stones that glow on the stone walls of the sky.

But now this measurement has overturned Chen Sheng's suspicion that the stars are suspended under the sky.

"3,150 km!"

"3,150 km!"

......

Chen Sheng read this number like a demon.

"3,150 kilometers is about half of 6,301 kilometers, which means that the stars of this world are suspended in the center of heaven and earth." Chen Sheng muttered.

"Stars! Call up the gravity measurement data from all over the country in the past few years! Chen Sheng ordered to Xiao Xingchen.

Chen Sheng paid attention to collecting the physical data of this world very early on, preparing for leaving this world, and the gravity data of various places was also one of them.

In an instant, a string of dense data appeared on the screen.

"Sort these gravity data by altitude! And calculate the altitude vs. gravity formula! Chen Sheng ordered.

In less than a few seconds, Xiao Xingchen completed the task.

"Daddy! The higher the altitude in this world, the lower the gravity. Based on their decreasing relationship, I calculated that gravity was expected to shrink to zero at an altitude of 3,150 km. Xiao Xingchen reported back.

"Sure enough!"

The conjecture of the world of the double bowl entered Chen Sheng's mind.

Suppose this world is located in the center of the earth of a giant planet, and for special reasons, the interior of the planet does not collapse, forming a world of the earth like two bowls closed.

And this giant planet is not a standard spherical shape, it is rugby-shaped.

At the same time, there is no rotation, and the world in which he lives happens to be at one end of rugby.

It is under the action of gravity that such a peculiar world can be formed.

If this conjecture is true, then it means that there is another world on the other side of the world, that is, above your head.

The stars and the sun are suspended in the middle of the two worlds.

However, in the absence of conclusive evidence, all this is Chen Sheng's conjecture.