In the space base, the scientific researchers of Ocean Group are busy.
The transformation of Venus is by no means as simple as it seems. A series of data must be carefully checked. The most important thing is the time, which must be accurate to 0.01 seconds!
The revolution speed of Venus is 48 kilometers per second, and the attack speed of the rail gun is 500 kilometers per second. In order to pursue absolutely precise control, only the functions of the electromagnetic science part are used.
Then there is the flying speed of the asteroid. The temporary flying speed is 52 kilometers per second, which is catching up with Venus relatively quickly.
Venus in this world has a diameter of 14,000 kilometers, an orbital velocity of 8.4 kilometers per second, and an escape velocity of 11.9 kilometers per second.
At the last moment, the asteroid must reduce its speed from 52 kilometers per second to between 8.4 and 11.9 in order to be captured by the gravity of Venus. Of course, the distance from Venus cannot be too far, and it must be controlled within 30,000 kilometers.
Inside.
At this time, the distance between Venus and Tianyuan Star is more than 8,000 kilometers; when the asteroid reaches the vicinity of Venus, the distance between Venus and Tianyuan Star will be about 83 million kilometers.
On a scale of 83 million kilometers, there are too many factors to consider in order to accurately hit a moving asteroid when a rail gun shell is launched from Tianyuan Star.
The flight trajectory of asteroids, the deceleration effect of spacecraft and engines, the gravity of Venus, the gravity and interference of the sun on asteroids.
Rail gun shells fly 83 million kilometers in the void, and they also have to consider the gravity of the sun - and when they were first launched, because they were too close to Tianyuan Star, they also had to consider the gravity of Tianyuan Star, and even the gravity of the moon. When they arrive near Venus,
, but also subject to the gravitational pull of Venus.
When launched, the speed of rail gun shells is 500 kilometers per second; affected by the gravity of the sun, according to calculations, when approaching Venus, the flight speed will reach 547 kilometers per second.
Finally, the rail gun's projectile needs to trace an irregular curve, span one-sixth of the orbital distance of Venus, and hit the small ice planet.
The diameter of the first ice planet is 800 kilometers, and if the rail gun wants to destroy the planet with one shot, it must hit the bullseye, and the deviation cannot exceed 100 kilometers.
According to the target calculation, it must be within 8 rings.
Moreover, there is only one chance to attack, and the consequences of a mistake are unpredictable. Once the asteroid decelerates, there will be almost no chance to accelerate. An out-of-control asteroid is likely to hit Venus head-on.
By then, if it is light, the land of Venus will have completely changed. The force of the impact will be enough to reshape the entire planet. It will take tens of thousands of years to stabilize. And after the impact, the location of resources on Venus that have been explored for more than two years will all be destroyed.
disappear.
If it's serious, an accidental mistake could cause Venus to deorbit, which would be really troublesome. At that time, the planets in the entire galaxy will be in chaos under the influence of gravity.
According to scientific calculations, once Venus deorbits, there is a three-in-10,000 chance that Tianyuan Star will detach from the sun, and then be gravitational slingshot by the gravity of other planets, until 300,000 years later, the planet will be directly ejected out of the galaxy.
, becoming a wandering planet.
Therefore, when transforming the galaxy, there is really no room for error.
The rail gun shells need to fly a distance of 83 million kilometers - in fact, because the flight trajectory is an irregular curve, Venus will continue to move forward during this process, and the actual flight distance exceeds 85 million kilometers.
During the flight, it is also affected by the gravity of the surrounding planets, and the speed of the cannonball is changing all the time. During the entire process, the cannonball needs to fly for about 45 hours.
There are so many difficulties, but the time when the rail gun hits the target must be accurate to 0.01 seconds, and the bullseye has a radius of only 100 kilometers.
This is truly the challenge of the century.
It took two years to prepare for this shot, during which countless simulation calculations were performed.
In the command center, various calculation data are displayed on the huge display screen, and various tracks appear. A massive waterfall of data passes by, and even a master of Dongxu has no time to memorize all the data.
Displayed on the screen are orbits of different colors, including the orbit of Venus, the orbits of three asteroids, the orbit of the starry sky cannon attack, and the evacuation orbit of the spacecraft.
The ten-day time difference between the three asteroids serves as the reserved adjustment time. No one can guarantee that this process will be completely smooth.
Zhang Hao sat quietly in the live broadcast room on the ground and did not enter space.
Zhang Hao knows very well that the pressure on the researchers is already high enough. Instead of promoting it by himself, it will double their pressure. Appropriate pressure is good, but excessive pressure will cause them to make mistakes or even collapse! Everyone
They have been preparing for two years and I believe they can do a good job.
Time passed little by little, and the first asteroid finally flew over Venus and exceeded a long distance. At this time, the spacecraft and the plasma engine installed on the asteroid began to work, and the asteroid began to slow down.
After two years of development, plasma engine technology has been updated to the fourth generation. A large number of obsolete engines, as well as some experimental engines, have migrated to asteroids. Six spacecraft gathered on the first asteroid.
Size 600 engine.
As the engine ignited, the asteroid descended at a speed of almost one meter per second.
As the asteroid's speed decreased, it was gradually pulled by the sun's gravity and began to fall. It can be seen from the computer screen that the asteroid's orbit began to tilt significantly and became increasingly steep.
The computers are running wildly, and the staff are staring at their work seriously.
As the project commander-in-chief, Shen Minghai stood up straight.
In fact, there is no gravity in the space base at this time. In order to reduce interference, there is not even rotating artificial gravity. This state has been like this since the establishment of this space command center.
If people want to walk normally and general tools and equipment want to be stable, they need shoes and pads with magnets. A lot of equipment is directly fixed to the ground. If you want to eat or drink, you need to leave here and go to the revolving restaurant.
At this time, in this huge command room with an area of more than 20,000 square meters, there was almost only the sound of machines running and the obvious sound of breathing.
Time is ticking and slipping away little by little.
At a certain moment, when the time began to count down, Shen Minghai gave the order: Prepare to launch the starry sky cannon.
The starry sky cannon began to ignite and accelerate. After 17 minutes, 27 seconds and 195 milliseconds, the starry sky cannon exploded. The accelerating starry sky cannon seemed to be kicked and stopped suddenly; then, under the gravity of Tianyuan Star, it began to fall.
The staff immediately made adjustments, and just ten minutes later, the starry sky cannon entered the launch preparation state again.
In front of Venus, more than thirty hours later, the speed of the first asteroid has gradually reduced to the design speed. The spacecraft and staff on the asteroid are busy.
Everyone cut off the brackets fixed on the surface of the asteroid with swords and swords, and moved the engines and nuclear islands one by one and moved them to the spacecraft.
In just eight hours, the spacecraft took off quickly, and six spacecrafts rushed out of the planet with more than 600 engines.
At this time, the asteroid is under the gravity of the sun, accelerating its fall little by little, and its speed begins to increase.
But Venus had caught up behind it, and Venus' gravitational pull caused the asteroid to slow down. After seven hours of this contest, Venus finally captured the asteroid perfectly.
But the asteroid had barely circled half of Venus. After 45 hours, 14 minutes, 27 seconds and 106 milliseconds, the cannonball from the Star Cannon traveled 85.18 million kilometers and accurately hit the asteroid.
The hit site was about 80 meters away from the bullseye, and it almost missed the target.
Then, the staff on the spacecraft near Venus witnessed the epic scene with their own eyes; the people behind the scenes, and even the whole world saw the live broadcast through the spacecraft, satellites, and detectors, and it was computer-generated with all-round effects.
picture.
The whole process, in the eyes of onlookers, is:
The ice planet first flies by itself, close to the outer periphery of Venus' orbit, passing about 120,000 kilometers away. There is a little gravity at this distance, but not much; however, this small change has been taken into consideration.
Affected by the gravity of Venus, the asteroid's flight orbit is slightly deflected toward the sun, and its speed is also slightly reduced. At the same time, the speed of Venus' flight orbit also changes slightly, but it is almost negligible.
During this process, the seals on the asteroid were largely damaged, and under the irradiation of the sun, a new tail was drawn behind the asteroid.
But when the asteroid completely surpassed Venus, the tail behind the asteroid began to fall under the gravity of Venus, gradually approaching Venus, and finally connected with Venus.
At this moment, it looks like Venus grabbing the asteroid's big tail.
Then there were a large number of flame jets from plasma engines in front of the asteroid. The jet flames rushed thousands of meters into space, and the asteroid's speed quickly decreased.
As the asteroid's speed decreases, the asteroid begins to fall toward the sun, but at a slower rate; in comparison, Venus behind it is chasing faster - people are holding on to the asteroid's tail.
When the asteroid fell from the outside of Venus' orbit to the inside of Venus' orbit, at a vertical distance of 18,000 miles from Venus' orbit (Venus's radius is 7,000 kilometers), the relative speed of the asteroid relative to Venus dropped to 9.5 kilometers per second, and the asteroid was completely absorbed by Venus.
Capture. (Note)
At this moment, the asteroid's steam billows towards Venus. In fact, at this moment, even if there is no rail gun attack, the asteroid will evaporate little by little within a thousand years and be absorbed by Venus.
However, Venus does not have a magnetic field and cannot protect its atmosphere. Water vapor will be carried away bit by bit by the solar wind.
The asteroid was captured by the gravity of Venus and revolved around Venus for a small half circle. At this time, the asteroid happened to be located between Tianyuan Star and Venus.
And at this moment, the cannonball of the starry sky cannon accurately hit the asteroid.
I saw the asteroid tremble suddenly, its surface quickly collapsed from the direction of the attack, cracks spread rapidly, and a large amount of ice, dozens of kilometers in size, peeled off from the planet.
The next moment, the entire planet collapsed and turned into endless pieces of ice. Under the impact of the cannonballs, a large amount of ice pieces and rocky star cores quickly fell towards Venus.
The entire asteroid fragment rushed into the atmosphere of Venus with huge kinetic energy.
For a time, the atmosphere of Venus was lit up by meteors. The crushed ice rubbed fiercely with the atmosphere, and the temperature could reach more than 3,000 degrees. The steam and hot air showed burning characteristics.
Because the structure of the asteroid is dominated by ice, and coupled with the impact of cannon shells in the sky, the collapsed ice itself is already densely covered with cracks. After entering the atmosphere of Venus, the violent collision caused a large number of ice cubes to break. During the fall, due to the collision with
Atmospheric friction causes constant evaporation and collapse.
Only less than 10% of the ice eventually fell to the ground. However, because most of the ice was already very fragile and full of cracks, most of the ice broke when it touched the ground, and its impact on the surface of Venus was limited. Only a small amount of ice, and most of the ice fell to the ground.
It was the fragments of the rock core that had an impact on the surface of Venus.
Generally speaking, under the strict calculations of Dayang Group's technical staff, the structure of Venus has not been damaged.
On the contrary, these broken ice and water vapor carry huge kinetic energy, which is the kinetic energy of an entire asteroid. This kinetic energy first caused the atmosphere of Venus to surge like a tsunami, and part of the atmosphere of Venus was actually directly knocked out of the planet and escaped from the gravity.
There are also some fragments that impact and drive the rotation of Venus.
And the disturbed atmosphere gradually accelerated Venus.
Five days after the impact, the speed of Venus' violent winds finally dropped below the speed of sound, and Venus began to rotate.
A large amount of ice entered Venus, causing the atmosphere of Venus to double in size. Endless water vapor crisscrossed the atmosphere, causing lightning and thunder. Thick dark clouds appeared on the golden planet. The temperature of Venus' atmosphere dropped by a hundred degrees!
But because the crust of Venus itself is in a molten state, coupled with the energy of the impact, the temperature is rising rapidly.
(Note: Regarding the speed of planets capturing asteroids, I checked a lot of information, and the more I looked at it, the more confused I became. I always felt that there was something wrong with the description. It seemed that the speeds of the two planets were not much different, rather than that one planet was slowing down. But it did not rotate.