Bright Sword starts with the grenade flat.

Chapter 442 Superluminal Star Destroyer Electromagnetic Cannon (Thanks for the Reward)
But the impact energy is not calculated in this way. The impact energy formula should be applied, which is expressed as: E=1/2mv^2. Here E represents the impact energy, m represents the mass of the impacting object, and v represents the speed.

According to this formula, it can be calculated that the energy of the needle hitting the surface of the blue planet is about 13.5 trillion joules, which is equivalent to the explosion power of more than tons of dynamite. In other words, when the needle hits the blue planet at a speed close to the speed of light, the blue planet will suffer a huge impact. If it hits a densely populated area, it can destroy a small town.

However, this hypothesis must rule out the resistance of the needle when passing through the atmosphere. Of course, even if it explodes in the atmosphere, the power of the explosion will be considerable.

However, even so, its power is just that. But in fact, this needle is only close to the speed of light, far from reaching the speed of light. As the speed continues to approach the speed of light, its kinetic energy increases exponentially. According to the addition of two 9s after the decimal point, the kinetic mass increases 10 times, so what will happen if 100 9s are added!
Liu Xiu increased the original mass by 50 orders of magnitude, so that the momentum of this needle, which has reached 1kg, will reach 1*10^49kg, which is a trillion trillion tons. The mass of the blue planet is only 60 trillion trillion tons, and the mass of the entire solar system is only about 2000 trillion trillion tons. The momentum of this needle is already 5000 trillion times that of the solar system.

At this time, this needle will not only destroy the blue planet and the solar system, but also the Milky Way, the Local Group of galaxies, and the Local Supercluster of galaxies. This is because the total mass of the Milky Way is only 2000 billion times that of the sun, the total mass of the Local Group of galaxies is only about 65 trillion solar masses, and the total mass of the Local Supercluster of galaxies is only 1 trillion solar masses.

In this way, the top killer in the universe discovered now - gamma-ray burst, is completely insignificant compared to this needle.

The speed of this needle is infinitely close to the speed of light, so its momentum tends to infinity.

Even if this supercluster is destroyed, the speed of this needle still does not reach the speed of light. Its speed can be increased infinitely, and 9 can be added infinitely. Even if 1000 9s are added, it is still infinitely close to the speed of light, but it has not reached the speed of light. This is the meaning of infinitely approaching the speed of light.

As the speed of light approaches infinitely, the kinetic mass of the needle will tend to infinity, and then will exceed the total mass of the universe, and also exceed the singularity force of the Big Bang.

Moreover, in order to push the needle to reach faster and faster speeds, the energy consumed will also become increasingly greater, approaching the speed of light. The energy consumed will also tend to infinity, and ultimately the energy required will exceed the total energy of the universe. Therefore, from a mathematical point of view, superluminal speed can only be a paradox.

The faster the speed of cosmic high-energy rays, the higher the energy and the greater the momentum, and its mass increase effect strictly conforms to the relativistic mass-speed relationship formula; the mass increase effect is also strictly tested in the Large Hadron Collider; in all aerospace activities, the relativistic mass-speed relationship principle must be followed in order to achieve success.

It is also because of this that even in the movie Avatar, where antimatter is used to power the spacecraft, its speed is still maintained at 70% of the speed of light.

As for why the spacecraft's cruising speed should be maintained at 70% instead of 90% or 10%, there is a reason for this.

After all, according to the mass-speed equation, when the speed of the spacecraft is 10%, the weight of the spacecraft itself will only increase by 0.5%, or 0.5 thousandths. When the speed of the spacecraft reaches 90% of the speed of light, its mass will reach 2.2 times the mass of the spacecraft.

Therefore, when the speed of the spacecraft reaches 90% of the speed of light, accelerating the spacecraft to such a speed is more than twice the original speed, so it is naturally very uneconomical. After all, if the energy on the spacecraft is almost used up due to acceleration, it will be troublesome to stop at that time.

Seventy percent of the speed of light is actually the best interval speed. After all, the mass-speed equation is not a geometric function, but a curve function, and 0.7 of the speed of light is exactly the upslope point of the curve. Therefore, if the speed of the spacecraft is controlled at 70%, its mass-energy will not increase much, so the acceleration energy required will naturally not be much.

Of course, the electromagnetic gun is not a spaceship. Its speed is not accelerated by the energy carried by the spaceship, but by the external electromagnetic track. And more importantly, there is another advantage that laser weapons cannot be compared with electromagnetic guns. Yes, this problem is actually the problem of superluminal speed. You must know that laser weapons emit lasers, so they can't carry equipment at all, especially the curvature engine that can distort space to make objects superluminal.

But the electromagnetic gun is different. It is possible to carry a small curvature engine on the electromagnetic gun shell. After the electromagnetic gun shell is fired, the curvature engine can be started to allow it to enter superluminal curvature navigation.

Although the current curvature engine can only achieve a hundredfold amplification, I believe that when combined with the speed of electromagnetic artillery shells that is close to the speed of light, it will be a hundred times the speed of light.

That is to say, at a speed of one hundred times the speed of light, if we fire from the solar system towards the Proxima Centauri galaxy, it will only take 0.04 years for the electromagnetic cannon to reach the galaxy, or just fourteen days or two weeks.

Of course, it would be useless to carry out an ultra-long-distance attack of four light years, even if the Wandering Blue Planet already had a 550X series supercomputer. There is no way around it, the distance is simply too far.

If it is slightly off, then by the time you reach Proxima Centauri, four light years away, it would be a huge loss.

Therefore, in order to solve the problem of superluminal electromagnetic cannons carrying out ultra-long-distance strikes at distances measured in light years, Liu Xiu gave Liu Qi a suggestion, which is to equip the electromagnetic cannon shells with a set of micro-thrusts for fine-tuning the direction of the electromagnetic cannon shells.

It’s just like the precision-guided artillery shells that Liu Xiu had made popular before he traveled through time.

Of course, the matter of electromagnetic artillery shell guidance will have to be discussed later. After all, Liu Xiu didn't really know whether an ordinary thrust engine could change the electromagnetic artillery shell flying at near the speed of light.

And so far there is no sign of star-destroying-level electromagnetic artillery shells!
After all, the cooling well used to install the electromagnetic gun coil track has just been opened, and due to the lack of room-temperature superconducting materials, the superconducting acceleration track for the Destroyer-class electromagnetic railgun has not been installed yet!
Fortunately, Pandora has now become a dead star. The originally lush trees on Pandora have been eaten up by the Zerg, and the blackwater virus released by Liu Xiu and his men has completely wiped out the trillions of Zerg troops.

So even though Pandora now looks like a dead planet without life, no one is sure whether there are any remaining blackwater viruses on Pandora. Therefore, for the safety of the entire Wandering Blue Planet human race, it was finally decided to use remote control to carry out mining operations on Pandora.

The first thing to do is to build a superconducting ore refining plant on Pandora, and then transport the refined superconducting ore back to the Wandering Blue Planet via transport spacecraft.

Of course, it is impossible for the transport ship that took off from Pandora to land directly on the Wandering Blue Planet, but it has to make a transfer.

(End of this chapter)