May 25, 2030.

Two days after the air raid on Ganymede, the raiding fleet finally arrived near Ganymede.

In the eyes of all fleet members, the trajectory of the fleet from Ganymede to Ganymede is not a straight line, but it is also a close straight line that is not very curved, but since the fleet is also orbiting Jupiter while changing its orbit, if you look beyond Jupiter, you will see a very obvious arc.

Ganymede, like Ganymede, has long been locked by Jupiter's strong gravitational pull, forever facing Jupiter, and Gao Kai continues to use the tactic of air raids on Callisto, and the fleet stops on the outside of Ganymede and opens up a safe enough distance.

The aliens are more attentive to the management of Ganymede, and there are more than ten times more dense ground buildings than Ganymede, and the air defense positions are one after another, which can only be seen on the surface, and I don't know how many are hidden underground.

In the face of such a huge defense system, even if Gao Kai was full of confidence, he had to pay attention to it, and the most direct manifestation was to park the fleet more than 1,500 kilometers away from Ganymede!

This distance is more than twice the effective range of fine light, but from top to bottom in the whole fleet, no one thinks that Gao Kai's decision is wrong.

At 14 o'clock in the afternoon, the air raid operation officially began, with one space carrier, four destroyers, eight frigates, and three assault ships taking part in the air attack.

Since only electromagnetic cannons were used, the artillery fire of the air raid was a little sparse, and the hit rate was not very good, and three shells could destroy a target even if it was good, while in the air attack on Ganymede, the average of seven shells missed only one shot.

No way, the distance is too far, even beyond the effective range of the electromagnetic gun, even if the electromagnetic cannon, it takes more than four minutes to fly over this distance, and the distance brings not only a matter of time, the dispersion of the impact point also expands with the increase of distance, resulting in a lower hit rate.

The assault fleet was happy, and the aliens on Ganymede were not idle, and the first batch of cannonballs just approached Ganymede, and countless fine lights rose into the sky without warning, and the originally calm surface of the star instantly boiled, and it was impossible to count how many thin lights were burning into the sky at the same time.

"Holy!" Gao Kai subconsciously burst out two words, if it weren't for the seat belt, he would have to float up from his seat, "How many bugs does this have?" ”

Lu Zuo quickly called up the statistical data: "The total number is between twenty-four and twenty-seven, and the error does not exceed one thousand. ”

It would be nice to have a supercomputer, but if it was the central computer before the modification, it would take half an hour to complete such a statistic.

"So much?" Gao Kai grinded his teeth and turned his gaze to Ye Han, "Ye Zi, should we use nuclear weapons now?" ”

The power of the electromagnetic cannon is good, but it is only good, the destructive power is equivalent to that of a heavy artillery, and if you want to get the effect of a nuclear weapon, the shells must weigh at least several tons, not just fifty kilograms.

Ye Han thought for a while and said, "Good steel has to be used on the blade." ”

The task of the assault fleet is to hurt the aliens, so they have to transfer the fleet back, and slowly grinding with electromagnetic cannons can indeed slowly take out the ground firepower on Europa, but it will take too long, the assault fleet can't wait, the interception fleet can't wait, and the earth can't wait.

Gao Kai got Ye Han's support, and immediately nodded: "Change the shells!" ”

With Europa's anti-aircraft firepower, the possibility of missiles escaping interception is infinitely close to zero, and only artillery shells have a chance to penetrate the fire net.

Attention, it's just an opportunity, not a grasp!

Although the fleet could not monitor the flight of the shells because of the wrong position, the fine light was too dense, and the massive beam of light was not at all where the shells went, and they were just trying to stop in front of the shells, even if the shells were fast, they would inevitably hit the beam.

There really is no one who can come up with direct evidence of this, unless there is a battleship on the side that is filmed entirely with a super-high-speed camera.

However, the effect of the first wave of tungsten alloy shells when they landed was much worse than that of the previous days, except that the shells were divided by fine light, Gao Kai could not find a more reasonable explanation.

And the hit rate of the pit daddy, although the distance is a little farther, but it has not exceeded the maximum range of the electromagnetic gun, there are so many missed shells, is there no reason?

Can artillery shells be intercepted?

The answer is yes, the fully automatic melee defense gun on the battleship can do it, but only the laser melee defense gun has this ability, and it can only intercept shells with low velocity.

The detection radar equipped with the close-in defense gun has the ability to detect high-speed flying shells, but the response speed of the interception system is limited, and the power of the laser is also limited, even if the laser shines accurately on the shell, it will not be able to destroy the shell because the illumination time is too short, unless the laser is always in the same position and remains for a long enough time.

However, even if the laser is always in the same position, it is not possible, because the speed of the shell is so fast, and before the irradiation time is reached, the shell has already fallen on the battleship.

In short, intercepting artillery shells is not as easy as it seems.

Of course, these are all scientific and technological achievements of mankind, and no one knows whether aliens have stronger technology.

Judging from Gao Kai's experience, there should be no, can the reaction speed of insects be faster than electronic devices? That's absolutely impossible.

In order to improve the hit rate, Gao Kai did not immediately order fire, but first ordered the fleet to disperse, so that the shells that were fired out were no longer concentrated, and then the nuclear artillery shells were sandwiched in many electromagnetic shells and sent out.

It only takes four minutes for an electromagnetic shell to land, compared to eight and a half minutes for a nuclear projectile, and the effective range of an ordinary naval gun is too short to guarantee a hit rate at all - hitting Europa is certainly fine, but whether or not it can hit the target is pure luck.

Fortunately, nuclear weapons do not need to be very accurate, as long as they are smashed near the target, they can play their due role...... It's not a big problem to miss, who made Europa's surface full of alien buildings and positions?

Shells are slamming down on Europa one after another, the aliens have lost a lot of ground, but the interception fire has shown no signs of stopping, and everything seems to be in order.

At this moment, a bright light suddenly burst out on the surface of Ganymede, and after a short period of strong light dissipated, a huge fireball exploded, the center part rose rapidly, and the edge quickly spread outward, forming a huge hemisphere clasped on the ground, or a constantly expanding hemisphere.

The fireball lasted only a few more moments than the bright light, and soon vanished, but everything covered by the fireball was destroyed, and the nearby alien positions were not spared, and the aliens and giant insects there were severely injured by the intense light radiation. ( Carapace Mobile Edition Reading M. )