Three hours passed in the blink of an eye, with tears, blessings, and concern; but in the end, everything turned into a firm determination to fight. For no other reason than to protect this warm and civilized land!
In space, electric sparks flickered and magnetic engines worked violently. The powerful thrust means that a 150-kilometer-long spacecraft does not need complicated light pressure drive at all; breakthroughs in the development of magnetic engines make the spacecraft more kinetic energy and more flexible.
In just one month, the spacecraft has accelerated to 0.3 times the speed of light, escaped from the much weaker Zhurong Galaxy (solar system), entered space, and has since disappeared from the field of view of the telescope.
In the lonely space, four human spaceships continue to accelerate. Don't let the enemy invade your home and fight. In the battle in the universe, when the enemy reaches your doorstep, it will be too late! Humanity has experienced some battles and deduced too many battle possibilities. The best way is to keep the enemy out of the country!
There are only soldiers in the spaceship! Everyone looked serious. Even when the spaceship was advancing, they were immersed in the virtual network and constantly increasing their combat experience. Battles in the universe are very strict tests of personal abilities. The distance is hundreds of thousands, millions or even hundreds of millions of kilometers, far exceeding the propagation distance of the speed of light per second. Under such circumstances, if you want to hit the opponent, you can only rely on experience and judgment. Computers also cannot provide accurate information. At this time, when there is not much difference in technology, it is more a test of the combat quality and wisdom of the soldiers!
Behind four huge spaceships. Followed by more than 2,000 huge war flying saucers. Compared with spaceships, the biggest advantage of UFOs is that there are no blind spots, everywhere. Weapons of war can be deployed. Also, there are densely packed fighter jets attached to the surface of the flying saucer.
The gray-haired Du He stood in the space command center. At the last moment of his life, he barely broke through the golden elixir stage to extend his life, but Du He could only retain his old appearance. However, this cannot conceal the ability of an excellent military talent. Mo Wentian personally led the fleet and set off, while Du He stayed in space. Responsible for commanding combat and coordination.
"Commander, the spaceship formation has left the galaxy. The speed has now reached 0.6 times the speed of light."
"Yeah." Du He responded, but the scientist next to him was calculating.
In fact, there is another reason for taking the initiative, and that is to use the theory of relativity to block the enemy! Using the theory of relativity? It sounds ridiculous at first. It's just a small theory. Can this thing also be used as a weapon?
But in fact, that’s it! The enemy is now 3 light-years away from humans. Calculated based on the speed of the enemy's spacecraft being 0.8 times the speed of light, if we do nothing, the enemy will inevitably arrive at Zhurong Star in four years (including deceleration time). But what if humans take the initiative? The enemy's spaceship has a speed of 0.8 times the speed of light, and the human spacecraft has a speed of 0.6 times the speed of light - and will eventually accelerate to 0.7 times the speed of light. So here's the problem, in-universe anyway. The speed of light is constant. Even if the two objects seem to be moving opposite each other now, it seems that the absolute speed relative to each other should be 1.5 times the speed of light?
wrong! impossible!
Assuming that the distance between the two spacecraft teams is three light years, then one party moves at 0.8 times the speed of light. The other side moves at 0.7 times the speed of light. Under low-speed physical conditions, it should take two years to meet. However, in a high-speed physical state, the actual time when the two met was: 2.822 years!
It’s a strange phenomenon, but it’s true! Assume that the coordinates of Zhu Rongxing are "0", and now the coordinates of the enemy spacecraft are "150". So theoretically, after 4 years. The enemy spaceship should reach point "0"! However, now, because the human spacecraft sets off, the time and space between the two is distorted. 2.822 years later, the enemy's spacecraft can only reach the "70" position. Then, even if the human fleet is killed immediately and continues to move forward, it will still take 1.75 years to reach the target! (Calculation headache. Hiss...) Originally, for a distance of 3 light years and 0.8 times the speed of light, the enemy needed 3.75 years; but now it takes (2.822+1.75=4.572) years, adding 0.822 years out of thin air!
This is one of the practical examples of scientific theory! Taking the initiative to attack, in addition to defending the enemy at the country's doorstep, it also bought mankind at least 0.8 years out of thin air! And 0.8 years is enough for humans to cultivate a batch of armies with initial combat capabilities!
The most important thing is that this change is invisible to humans and machines within the coordinate system! In other words, although time has obviously increased, the human army and enemies in a state of war cannot detect the change, because it is a change in the universe itself! At this time, only "bystanders know"! If the other party doesn't know this, they may be tricked by humans - but thinking about it, such a developed civilization, even if it doesn't have a top theory like the theory of relativity, must have experienced star battles, and this phenomenon cannot be ignored. Strategically, humans will never ignore this proactive civilization!
"Didi..." In Zhu Rongxing's space base, scientists were calculating. The complex space environment makes it extremely difficult for the starry sky cannon to aim. Especially now, the relative motion between human spaceships and enemy spaceships has added countless changes to the already complex universe. And that's not all, the speed of the rail gun also has a huge initial velocity. Compared with the enemy's spacecraft, it is another relative motion with huge variables!
In addition, there are also the movements of the universe itself, etc., which are all very complex calculations. Now, the supercomputer has been working for more than a month, and the calculation progress has just reached 90%!
There is a saying that a man who travels a hundred miles is half a mile, and this is also true in the field of science. When it reaches 90%, the progress bar begins to slow down.
In space, the starry sky cannon is still accelerating slowly, even exceeding the gravitational field of the planet, and its speed has reached 30 kilometers per second. Combat in the starry sky is different from that on the ground, in order to adapt to the huge reaction force. The starry sky cannon had to be accelerated in advance. After waiting for the cannon to be launched, the huge reaction force will cause the cannon to stop instantly. and. This early acceleration will also improve energy utilization as much as possible. This small change can increase the energy of the projectile by 1%!
Don’t underestimate 1% of energy. Accelerating a projectile to 0.8 times the speed of light consumes enough energy to meet the electricity consumption of a large city with a population of 10 million for ten years! One percent of the energy is a month's total electricity!
Intense war preparations have begun in every corner of human society. Not only the starry sky cannons of Zhurong Galaxy are ready, but the starry sky cannons of every planet are also ready. Starry sky cannon. Although it is bulky, it is the last and strongest line of defense for mankind. Starry sky cannon. A weapon that maximizes physical impact! In extreme cases, it can be launched once an hour.
With a length of tens of thousands of kilometers, the Star Cannon is definitely the Great Wall of Technology!
Silent universe, silent battle. war. The battle had already started when the two sides were three light-years apart and three years in advance. This is a war in the universe, a completely different way of war from that on the ground.
"Beep!" After two months of hard work at Zhu Rongxing's starry sky base, the computer finally calculated the trajectory of the enemy spacecraft! At a distance of about 3 light years and about 28 trillion kilometers, it has been locked!
"Wait, don't launch it yet!" Du He stopped the scientist who was about to press the start switch happily.
"Why?" scientists are puzzled.
"This is a strategy." Du He said with the self-confidence of a soldier. Of course, he had to explain clearly to these scientists that intellectuals are sometimes very stubborn; that is, they rely on this "getting into trouble and being stubborn" spirit. Only scientists can continue to complete scientific research and progress.
"This is it." Du He saw that the scientists' faces were about to change and quickly explained, "We have to calculate it well. It is best to have the spaceships of both sides close to the combat distance so that our cannonballs can hit the enemy. If it is too early, the enemy will be Be alert, unknown changes may occur. The space is too far away, and we only have one chance to attack!
After an attack, whether the target is hit or not. The enemy may change the state of movement, which makes us lose the locking direction; it is also not conducive to the troops that have already set off to lock the enemy. ”
"Oh..." The scientist touched his nose angrily. Then restart the calculation. Calculate the distance at which two fleets of spaceships enter a state of war. According to the plan, humans will open fire and use rail guns to start the battle at a distance of one light-year. And there is a problem again. After the rail gun is fired, the speed is faster, and if the enemy counterattacks, the speed must be very fast, and a powerful civilization will probably be a light speed weapon.
Then this will cause all the previously calculated data to be invalid and need to be calculated from scratch!
"Bah, bah, bah..." Scientists are not short of patience. Although calculating time and space is very complicated, especially since every position changes every moment, humans can still calculate accurate time and space positions. Standing on the planet, you can already calculate a one-meter target three light years away.
However, such advanced technology requires a technical team of thousands of people! The Star Cannon is currently the only weapon in mankind that cannot be completely controlled by soldiers. Without him, the technical content is too high! It even requires a professional technical team for development and temporary calculations!
In other words, the Star Cannon is not just a weapon, it is also the pinnacle of technology and one of the sharpest tools for scientists to explore time and space! This is both a weapon and a peak testing machine!
When the Zhurong Galaxy completely entered a state of special war, hundreds of spaceships set off across the human world, and all galaxies within 20 light-years from here began to send troops. The farther away, it's too late; but the farther away sends troops around the Earth - the solar system is the core of humanity.
Humanity has not yet determined whether the invading civilization is powerful or how powerful it is. However, be careful when sailing the ship of ten thousand years, and this is a battle related to the survival of mankind. If the enemy is not strong, at worst it will be regarded as a very large-scale military exercise; but what if the enemy is really strong? The lonely space is ignited by human enthusiasm! Human spaceships come from various galaxies, with different shapes, large and small, but they carry the same enthusiasm! ——Destroy the enemy!