Yan Jing's eyebrows twisted out an obvious Sichuan character: "I would like to make a few comments, first of all, we must explain the changes in the task of the fleet to the soldiers, so that every soldier can clarify their responsibilities." I won't emphasize this www.biquge.info you know how to do it, but I must emphasize it again. ”

"Secondly, the information collected must be sent back to Earth in a timely manner...... There are still four days to go to Jupiter, and when the fleet flies into the magnetosphere, the radio will not be used, no matter which warship, as long as it seizes the opportunity, it will use the laser to send the news back, as much as it wants. ”

"Again, since we have encountered an alien spaceship, it is equivalent to entering the enemy-occupied area, and it is possible to run into an alien warship at any time, so from now on, we must strictly implement the combat readiness system, and the bridge combat position will not leave people 24 hours a day, and at least one-third of the personnel will be in place, so as to ensure that the fleet can be put into battle at any time."

"Time is running out, comrades, the current situation is very serious, we not only have to reconnoiter the combat capabilities of aliens, but also have to hurt aliens and let them know that humans are not easy to bully." Yan Jing slammed his fist on the armrest, "Now let me talk about the battle plan, my plan is to divide the troops into two ways, one group is composed of the Hongwan and the Luwan, and it is close to Jupiter in the future, the main task is to feint, attract the attention of the alien fleet, reconnoiter the combat effectiveness of the alien fleet, and it is best to lure the alien fleet away; The Summer Bay and the Moon Bay form two groups, retrograde close to Jupiter, the main task of the second group is to break the attack, using the relative speed of the fleet and Europin to attack Europa, what do you have to say. ”

Everyone immediately understood what Yan Jing meant.

The so-called anterograde is to align with the direction of Jupiter's rotation, and most of Jupiter's moons orbit Jupiter in this direction, including the four Galilean moons and Europa.

Needless to say, retrograde planets of Jupiter have some retrograde moons in the opposite direction, but there are fewer of them.

If the retrograde fleet were to get close to Europa, the relative speed of both sides would exceed 100 kilometers, and it would take no more than half a minute for the ship to fly over the surface of Europa.

Wang Xiaolei said: "Commander, the orbit of Ganymede is close to Jupiter, and the speed is not slow, if we attack Ganymede in the same direction, our speed is not much higher than that of Ganymede, and the possibility of encountering the main force of the alien fleet is very high, is it not planned carefully to avoid the fleet being surrounded by enemies?" For example, luring snakes out of holes or something, after all, the raid is no longer our main task. ”

"The strategy is arranged by my commander, and the tactics are decided by you captains." Yan Jing fully delegated power.

Huang Bo asked: "Commander, if I understand correctly, it should be one group that goes into battle first to distract the aliens, and then the second group approaches Europa, but in this way, the second group can't slow down too much, and it must arrive earlier than the first group!" ”

Retrograde approach is actually the direction of the implementation of the gravitational slingshot, and the retrograde approach is the opposite, so it will lose part of the speed, and the aircraft can take advantage of this feature and use the gravitational slingshot principle to slow down the aircraft.

"Fly around Jupiter a few times first, we won't have a place to hide anyway." Yan Jing's tone was a little helpless.

Space warfare is not good at this, there is no place to hide, there is no place to hide, the enemy and us knew the position of the other side 800 years ago, even if they change orbit and maneuver, they can't escape from a few nearby directions, how to look at it is almost the same as lining up to shoot, unless you don't want to fight, there are very few tactics that can be used.

Huang Bo nodded solemnly, and several people studied some minor issues, and the summary meeting ended, and the preparations for the operation were in full swing, among which the observation of the enemy was the most important thing in the whole plan, but the observation department had just begun to work, and there were extremely unusual discoveries.

When the expeditionary fleet was fully recovered, it had been busy taking care of the alien fleet in front of it, and it didn't have time to observe Ganymede, but after the observation department pointed the telescope at Jupiter, Ganymede's true face appeared in front of the expeditionary fleet, and everyone was surprised.

It is observed that the orbit of Europa is between Europa and Callisto, and among the more than 60 moons of Jupiter, only four moons are closer to Jupiter than it, and its orbital speed is close to 40 kilometers per second.

Jupiter's impact on Europin is even greater, according to measurements a few years ago, the surface temperature of Europa is below minus 200 degrees, and the white substance on its surface is actually solidified air ice.

At this time, the temperature of Ioto has risen significantly, and the originally thin atmosphere has become much thicker, although the equatorial region is still covered by white matter, the temperature is only minus 30 degrees, and the white material covering the earth there is obviously a layer of water ice!

Even more unbelievable, the observers found several volcanoes on the surface of Europin that were still billowing with smoke!

Although the expeditionary force is full of military personnel, and no one specializes in astronomy, those who can enter the expeditionary force, pick out any random one, and they have systematically learned some astronomical knowledge, and they have memorized the information of Jupiter like a stream.

It is well known that Io has an extremely large volcanic complex, and the large number of volcanoes on Io is due to Jupiter's strong gravitational pull.

Callisto is closer to Jupiter than Io, and is even larger than Europa, so no matter what Callisto had its original surface temperature, it is impossible for Jupiter's strong gravitational pull not to rise.

In other words, Europa, which had fallen into dead silence because of its crossing of interstellar space, is gradually recovering!

Further observations revealed that the aliens on Callisto were doing something to maintain Calilysto rotate, and that Callisto was slowly moving away from Jupiter!

This discovery was not trivial, and it immediately shocked the entire expeditionary fleet, but after the news was sent back to Earth, the command center replied that it had known it for a long time, and not only sent back more detailed observation records to the expeditionary fleet, but also attached the analysis results of astronomical experts.

The astronomical community believes that the reason for this situation is not an accident or a coincidence, but an intentional act by aliens!

Europa was once extremely close to Jupiter and nearly crashed into Jupiter, which shook the world. But the astronomical community has never understood how it suddenly approached Jupiter when its earliest orbit was far enough away from Jupiter.

Moreover, aliens have the ability to control Europa, and the process of approaching Jupiter lasted for a long time, and no matter how lazy the aliens were, they should not have such a mistake.

But think about it the other way around, what if aliens deliberately manipulated Europa Zero to get closer to Jupiter?