Thousands of missiles rushed out from the human warships, trailing a faint trail and rushing towards Europa.
The overwhelming missiles were like a swarm of flying flies swooping on the delicious cake. No one dared to doubt their role. At this moment, even the aliens felt desperate. Some alien warships actually escaped from Jupiter.
.
There was no need for the expedition fleet to approach Europa anymore. Gao Kai immediately ordered the fleet to adjust its orbit. The fleet turned around less than 30,000 kilometers away from Europa and gradually separated from Europa.
At the same time, the alien fleets on Europa, Ganymede, Callisto and several other satellites that are closer to Jupiter all took off and fiercely attacked the expedition fleet from all directions, but the closest one was still Jupiter.
Six fleets.
"Commander, the observation team reported that the enemy's speed suddenly increased, doubling the previous highest speed!"
A smile appeared on Gao Kai's face: "Do you think of speeding up now? It's too late!"
He guessed that the aliens probably wanted to copy the last tactic, using Io as bait to surround the Second Fleet near Io. Unfortunately, they did not expect that the main weapon of the Second Fleet was cannon, not cannons.
Missiles that are easier to intercept.
The expedition fleet quickly moved away, but the battle surrounding Io did not stop. First, thousands of nuclear bombs hit the surface of Io layer by layer. The rising mushroom cloud had not dissipated, and a new mushroom cloud rose.
There was even a spectacle of two shells falling at the same location, creating a mushroom cloud within a mushroom cloud.
The side of Europa facing the expedition fleet was almost covered by nuclear explosions. The ice and snow melted and evaporated, and the sand and gravel burned and turned into glass. Everything in sight was completely destroyed in the nuclear explosion.
Seeing all this, everyone breathed a sigh of relief, but for some reason, no one celebrated or cheered.
Although the expedition fleet destroyed Europa, the alien fleet is still there. Now the second fleet has exhausted all its ammunition reserves. Only the dozens of fighter jets are still capable of fighting, and they have no ability to destroy the alien fleet.
No one needs to say it, everyone understands in their hearts that as long as the alien fleet exists for one day, it will be the enemy of humankind's survival.
All the artillery shells fell on Jupiter, and it would take some time for the missiles to arrive. The battlefield fell into a brief stagnation.
Ye Han in the headquarters looked at Gao Kai curiously: "Is this the end? What to do on the back?"
Although he came to the headquarters early in the morning to watch the excitement, he knew his identity very well and remained silent during the battle. He refused to speak until the war came to an end.
"The back side?" Gao Kai smiled mysteriously, "You'll know just by looking at it."
Ye Han cast suspicious eyes on the screen. The shells were used up, and only the missiles were left to continue flying towards Europa. Could the missiles go around the back of Europa?
The missile swarm finally arrived at Europa, and the alien fleet that still adhered to its home planet struggled to intercept it. Their efforts did achieve certain results, but they were unable to block all the missiles.
In the past, aliens could still rely on ground anti-aircraft firepower for a period of time, but now the ground has been leveled by a large number of nuclear bombs, and they can only watch the missiles falling into Europa.
It was like a meteor shower.
A rain of death.
Ye Han glanced at Gao Kai in surprise. The missile just fell into Europa. How is it different from a cannonball?
Gao Kai gave Ye Han a confident look, and Ye Han turned his eyes back to the screen, just in time to see a mushroom cloud rising above Europa.
The air explosion, rather than the ground explosion of the artillery shell, was the only difference Ye Han discovered.
Gao Kai let out a long breath: "It's done!"
Many people, including Ye Han, were puzzled, what happened?
Only a few fleet executives showed happy smiles, which made everyone even more puzzled.
"We used cobalt bombs..."
The knowledgeable people suddenly realized it, but the vast majority of people still didn't understand it, including Ye Han.
Seeing this, Gao Kai continued to explain: "The cobalt bomb is actually a type of neutron bomb. To put it simply, it adds a layer of cobalt 59 shell to the outside of the neutron bomb."
By bombarding the cobalt layer, ordinary cobalt can be turned into the radioactive element cobalt-60. When this thing decays, it can release high-energy gamma rays. Do you understand?"
Now most people understand.
Most people have never come into contact with or even heard of cobalt 60, but it has a wide range of applications, including breeding, flaw detection, disinfection and radiotherapy.
Because of its wide application, there have been many casualties caused by cobalt-60 radioactive sources. For example, after picking up a small shiny object on the road and taking it home, the whole family almost died. (One more thing, it is said that most radioactive sources are made of
Chain or pendant-shaped, if you encounter unknown metal in the wild, especially small pieces of unknown metal, be sure not to bring it home.)
The principle of the cobalt bomb is also very simple. The air explosion of the nuclear bomb produces a large amount of cobalt 60, which continues to decay after entering the atmosphere, producing continuous gamma rays that irradiate Europa. Even if the cobalt 60 dust falls to the ground, the irradiation will not stop.
What are gamma rays? They are powerful rays produced in large quantities when supernovae explode. They are high-risk rays that can kill all living things!
The spread of cobalt-60 can certainly not be compared to a supernova explosion, but the damage caused by gamma rays is not much different. Even if the aliens do not die, they will have to hide underground and live like mice.
Although he understood the significance of the cobalt bomb, Ye Han still couldn't let go and asked worriedly: "The aliens flew in from outside the solar system. The most indispensable thing in interstellar space is radiation. They have a way to fly across interstellar space. How can they still do it?"
Can’t deal with cobalt 60 radiation?”
"It doesn't matter, there is still the Yunhai." Gao Kai said with a bit of disappointment.
Sea of Clouds...
Everyone was shocked and turned their attention to the screen.
Tens of thousands of kilometers away, the Unkai's indomitable figure has already broken through the blockade of the alien fleet and rushed towards Europa under countless thin lights.
The alien fleet tried their best to intercept it, even launching the fleet to ram the Unkai.
The uncontrolled Unkai had no way to hide or avoid it. It was hit by three alien warships in succession, and the attitude of the warships changed irreversibly.
But the deformed Unkai is still intact. Even if countless thin lights cut off countless fragments from its body, it still can't stop it from rushing towards Io, but only deflects the Unkai's route.
It was not until before it fell into the atmosphere that the alien fleet tried its best to cut the Unkai into two pieces. The front half of the Unkai fell into the atmosphere and continued to fall to the ground. The other half flew away against the atmosphere, scattering countless unknown objects along the way.
Objects, including artillery shells and missiles that were not launched in time, as well as various unknown objects such as the ship's armor and internal equipment, and even a reactor fell out.