The last human in the universe

Chapter 33 Orbit
Accompanied by the arrival of the radio signal from the Tinder spacecraft, the electronic detonator instantly detonated the explosives.The energy stored in the TNT explosive was quickly released. While generating a large amount of gas, this silent explosion also violently pushed away the asteroid matter that was originally crowded around it.

Numerous rock fragments gained enough velocity in this explosion that they fled the planet, never to return.There are also many substances that are gas at normal temperature, but here are solid substances that are turned into gas again in the explosion, and then cooled again to turn into solid again.

But in this instant, this small asteroid has its own atmosphere for a short time.

This explosion also opened the channel to communicate the interior and exterior of the asteroid.

A large amount of solid gas inside it is rapidly melting under the action of the decay heat of radioactive heavy elements.This creates a higher pressure inside.And because of the tidal force effect of being close to the big planet—compared to it, Sedna Star is undoubtedly a giant—that is, because of the different distances from Sedna Star, the gravitational force received by the asteroid body is uneven As a result, it has more internal energy inside.

For example, the gravitational force on the side of the asteroid away from the Sedna star is relatively small, and the gravitational force on the side close to the Sedna star is relatively large. In this way, under the action of the gravitational force, it will be torn and squeezed. Compression, distortion, and this will be expressed in the form of heat energy.

So the solid gas inside it melts into gas faster, and the internal pressure is higher.

At this time, the passage to the outside was opened.As a result, under the action of internal pressure, the gas surges out, like a balloon with a hole broken.

The size of the channel opening is also strictly required.It doesn't matter if it's too big, or too small, it must meet the requirements.Because if the hole is too large, the jet velocity of the gas will be reduced, and the reverse thrust will be reduced.Conversely, the jet speed will increase, but the reduction of the total amount will also lead to a reduction in reverse thrust.There must be a balance between the two in order to achieve the greatest effect.

And this time the explosion was carried out after rigorous calculation, and it obviously achieved better results.The gas jet velocity and flow rate observed by people fully meet the requirements.

As a result, a "firework show" that was much larger than before was staged in the vast space on this dusty asteroid.

At the moment, people have not noticed any obvious changes in the asteroid's orbit, but that's okay.The ejection of gas, and during its ejection process, exerting the reaction force on the asteroid body is a relatively long-term process.Under the jet of gas, the reverse thrust is always present, always acting on it continuously.

After finding that everything was as expected, people's mood was lifted again.But this is still not the final moment.People still have to wait.

The jet of gas is always going on, and it is always approaching the Sedna star.And because of the existence of this reaction force, Xiaoxi's prediction of its orbit is constantly revised.

On the projection screen, the asteroid is marked green, and its future predicted orbit is also green.At this moment, this green line still coincides with the star Sedna, which is also marked in green.This means that if the asteroid is still on its current trajectory, the collision will still happen.

But the angle at which the green line coincides with Sedna's star has been changing over time.People stared intently at the screen, carefully observing every change in the simulated image.

Gradually, the coincidence of the green line with Sedna's star decreased from about 20% to 19%.After that, it became 18%, 17%...

Until it became 1%.

This means that the asteroid will hit Sedna with an almost parallel orbit at an extremely sharp angle.

But it's still not the end.It can be seen that the impact angle is still changing.The point of impact was constantly receding, and in the end, the line actually showed an obvious bend.

This means that it will not hit Sedna until it has orbited halfway around it.

Then, half a circle became one circle, and one circle became two circles.

"come on! Come on……"

People shouted silently in their hearts.

Time passed quietly, and there was only one hour left before the final impact time.And at this moment, in the simulated image, the coincidence point of the orbit line and the Sedna star suddenly disappeared.Immediately afterwards, the lines of its orbit completely overlapped to form an ellipse.

This means it has acquired a stable orbit around Sedna.It became a satellite of Sedna.If there is no accident, it will never hit Sedna.

Zhao Changxing only felt a rush of blood rushing to his head, and a burst of ecstasy instantly occupied his heart.Almost subconsciously, he roared: "Okay!"

"Great!"

"Success!"

The people cheered together.I don't know how many people were so excited that tears filled their eyes.Even the children who didn't understand anything jumped up and cheered happily at this moment.

"We made it! We made it!"

At this moment, the orbit of the asteroid is still changing.Because the gas inside it is still spraying, exerting force on it.So its orbit was out of stability again, and it began to become chaotic.But it doesn't matter, because no matter how it changes at this moment, its orbit will always change in the direction away from Sedna Star. When it hits, people don't care about its ultimate fate.

When the joy in his heart finally calmed down, Zhao Changxing stopped the noise and celebration of the people.

"The disaster hasn't completely passed yet." Zhao Changxing said, "Don't be too happy yet."

Although the main body of the asteroid will not collide, in the previous explosion, many rocky debris fell off it.Moreover, during the process of ejecting the internal gas, some substances will always leave it and maintain the original orbit.This means that something must still hit Sedna.

If it is on the earth, most of these debris will turn into meteors, contributing to a wonderful meteor shower for people.But Sedna doesn't have an atmosphere.Any tiny debris will hit it unimpeded.

Of course, this will not have any impact on Sedna, but people still need to prevent these things from directly hitting human buildings.

Their speed is comparable to that of bullets. Once they hit, as long as the mass is not too small, they will hit a hole on the wall or the roof at the lightest level, and penetrate directly at the worst level.

"Hopefully our damage will be less. Otherwise, we will have to spend a lot of time repairing our buildings."

Zhao Changxing said seriously, but the smile on the corner of his mouth couldn't be concealed no matter what.

Compared with the direct collision of the main body of the asteroid, just a few meteors, how serious can it be?
The most dangerous time is over.

People suppressed their joy, quietly waiting for the impact to pass.After the asteroid orbited Sedna's star for almost a week, the meteor shower finally came to an end.

"Let's go see the situation."

Zhao Changxing immediately led more than a dozen people in the Falcon [-] and Falcon [-] spacecrafts, left the Pyros spacecraft, and landed on Sedna Star.

Still in space, before landing, Zhao Changxing saw the human building that still maintained its integrity.This made his heart beat violently again.As the distance got closer, Zhao Changxing still couldn't see any damage.

Until the spaceship landed completely, a dozen people dispersed to check different buildings separately. After more than half an hour of careful searching, they finally found a 23cm-diameter building on the roof of the yet-to-be-built No. 3 comprehensive base. After a pit with a depth of only about [-] centimeters and some rock debris was found around it, but no damage points were found, people finally confirmed that this disaster has really passed.Not only did it pass, but it basically failed to cause any damage to people's buildings.

This time, people can finally relax and celebrate thoroughly.

Looking at the people jumping several meters high on the Sedna star, listening to the enthusiastic cheers in the public communication channel, and even some uncontrollable sobs, Zhao Changxing's body finally relaxed, and then sat down on the ground .

"Finally, finally, I don't have to repeat the road I walked decades ago..."

Next, as long as the key equipment and materials transported to the Tinder spacecraft are moved back, these bases that have been built with great pains can be put into operation again.Construction progress that had been delayed can start again.

"It's just that I don't know when the gold mine will be found."

Having survived the catastrophe in front of him, Zhao Changxing's thoughts immediately drifted to the future.

Without a gold mine, future construction still faces insurmountable obstacles.

At this moment, Zhao Changxing suddenly felt a tightness in his buttocks.

Although the gravity on Sedna is very small, and his weight is correspondingly small, he still feels a little uncomfortable.

Subconsciously, he reached out and touched a stone.He took it out casually and was about to throw it away, but the special luster of this stone caught his attention instantly.

At this moment, the sun, like a point of light, spread the light 100 times that of the moon at its brightest on the land of Sedna.With the light of the sun, Zhao Changxing could clearly see that the stone in front of him exuded a clear golden light.

It is heavy.This means it is very dense.It is also very soft and can be broken by hand.It also has obvious high-speed impact marks, as if it had hit the ground suddenly.

Zhao Changxing's heart jumped up.

"It's gold, it's natural gold! It's natural gold that fell from that asteroid!"

(End of this chapter)