On May 22, 2030, the bridge of the Nanzhou Aerospace Carrier.

There was not a single superfluous murmur in the bridge, and all the bridge officers were on standby.

At this time, the strike fleet was near Ganymede, moving parallel to Ganymede at a distance of 1,000 kilometers - a distance that was very close, but far beyond the range of alien weapons.

The 2nd Fleet has arrived at Jupiter not long ago and is changing its orbit to low orbit, but it will take two to three days to change orbit, and the Strike Fleet will not have time to wait any longer.

The assault fleet was ready for battle, and all the warships rushed out with their tails and their bows aimed at Ganymede, and a ground-air battle was about to break out.

At ten o'clock in the morning, Gao Kai broke the silence: "Let's start." ”

"Let's get moving!"

The operational staff quickly conveyed the order, and the order reached the Yaoshan, and a voice shouted: "The port side electromagnetic cannon is activated—"

At the same time, the cannon chamber was mechanically running, and the mechanical arm stuffed a wrist-thick tungsten alloy rod into the gun chamber. Immediately, the current was turned on, and the metal rod that was gently levitating was immediately restrained in the air by an invisible force.

"Launch-" Under the flagship's order, the metal rod was immediately sent into the barrel by the invisible electromagnetic force, and after the continuous acceleration of the magnetic force, the metal rod weighing fifty kilograms was discharged at a speed of up to 6,400 meters per second!

As soon as the starboard guns were fired, the starboard guns immediately picked up, and another salvo was fired.

In this way, the electromagnetic guns on the left and right sides appeared on the stage, and the twenty-three battleships fired more than a dozen rounds in a row before they stopped firing under the order of the flagship.

The electromagnetic cannon is the latest equipment of the space fleet, and the space carrier, destroyer, frigate, and assault ship are all on the port side and one on the port side, and there is only one supply ship.

On the bridge of the Yaoshan ship, Ye Han looked at the main screen silently, and suddenly remembered the memory of seeing Ganymede for the first time.

At that time, Ganymede was like the moon, craters full of craters and valleys, how desolate it looked.

Today, Callisto has changed dramatically in the hands of aliens, and many of the originally undulating places have been bulldozed by aliens, and many ice-white alien structures have been built.

Ye Han glanced at the time, and sighed with some emotion in his heart, it is now ten minutes and twenty-five seconds, and in another eleven seconds, the first wave of shells will fall on Callisto, and this is only the first round of bombardment, and it will follow one round after another, until all the buildings on the surface of Ganymede are smashed.

A little light suddenly burst out on the surface of Europa, but it disappeared immediately, Ye Han glanced at the time, exactly two minutes and thirty-six seconds.

Then the surface of Ganymede seemed to be boiling, and there were fleeting lights everywhere, and those lights were so inconspicuous that they were setting off a batch of inferior fireworks.

But if you zoom in closer, you can see that every flicker of light shatters everything nearby, causing buildings to collapse and the ground to cavity or leave a crater of astonishing diameter.

According to Ye Han's experience, the power of each tungsten alloy shell is no less than that of a large-caliber shell, but the top echelons of the fleet who witnessed this scene invariably frowned.

Fifty kilograms of tungsten alloy shells are indeed a little lighter, and it is normal that the power is not as powerful as that of an asteroid impact, but the actual strike effect seems to be far from the theoretical calculation results, which makes people scratch their heads.

There must be no mistakes in the calculation results, so is it a design problem or a mistake in principle?

Fortunately, none of the top echelons of the fleet are donkeys who drill the horns of the bull, and it doesn't matter if the effect is almost there, as long as it is not ineffective.

So Gao Kai did not hesitate to order a second round of air strikes, and specified the replacement of tungsten alloy warheads with depleted uranium warheads.

The electromagnetic gun is equipped with two kinds of warheads, the tungsten alloy warhead is large in size and high in weight, and the speed of discharging is about 6 to 8 kilometers per second, which is generally used for ground attack; Depleted uranium shells are much lighter than the former, with a discharge speed of more than 10,000 meters per second, and are mainly used for warship confrontation.

Depleted uranium shells are too light, and bombing the ground with this thing will not be more effective than tungsten warheads, but no one in the entire fleet asked a word of nonsense, and all the warships involved in the air raid immediately did so, and in the blink of an eye, several rounds of depleted uranium shells were smashed.

A little more than a minute later, several more points of light erupted on the surface of Ganymede, and they were much stronger than tungsten warheads in terms of brightness and duration.

This phenomenon caught Ye Han's attention, he knew that depleted uranium can produce high temperatures and spontaneously combust when it hits the target, but the main component of the thin atmosphere in Ganymede is carbon dioxide, so where does the phenomenon of depleted uranium bombs hit the target come from? Could it be that aliens have a reserve of oxygen?

Otherwise, it is the depleted uranium shell that pierces the zenith of the underground structure......

The target of each shell is not chosen randomly, during this time the fleet observed Ganymede 24 hours a day, and a few days ago aliens could be seen wandering around on the surface of Ganymede, but after the fleet arrived, all the aliens disappeared, obviously hiding underground, and the route and location of their evasion have been left in the fleet's observation record, just to provide a target reference for the bombing.

The second round of bombing was over, and the effect was indeed not as good as the first round, but Gao Kai didn't say anything, just asked in a low voice: "Have you found it?" ”

"Nope." Lu Zuo replied softly.

Gao Kai's facial features were huddled together: "It's all out of the war, what kind of trouble is this?" ”

The strike fleet has been hovering around Ganymede for a while, and it is said that the alien fleet should have come out a long time ago, but the shells have all fallen on Ganymede, and there is still not a single alien battleship coming out, this strange situation really reassures him.

Lu Zuo said: "Commander, I'm worried about whether Ganymede is a trap, maybe it's the aliens who are afraid that we will run away, waiting for us to land, and then we won't be able to run away and can't go, then it will be troublesome." ”

He is not afraid of the enemy in the open, the space is so big, that is, there is no cover and no obstruction; The speed of another human warship is no less than that of an alien warship, and there is an obvious advantage in running long distances, and the aliens can't stop them if they want to go.

Gao Que smiled slightly: "Ye Han, that kid went with you." ”

"Then ...... next" Lu Zuo deliberately said halfway through, leaving a word for Gao Kai.

Gao Kai said: "If the aliens don't move, let's move, change the track, get closer and bombard him for a few more rounds." ”

"To what?" Lu Zuo asked.

Gao Kai's eyes showed a hint of determination: "About 700 kilometers, let's have a fixed-point elimination to see if the aliens can calm down." ”

When Lu Zuo heard this, he couldn't help laughing: "Change orbit and change track, 700 kilometers!" ”

He couldn't help but laugh, the effective range of fine light was between 600 and 700 kilometers, and Ganymede's anti-aircraft firepower would definitely not reach the fleet, but the fleet's firepower could bombard Ganymede without being affected.