(This chapter is 886, I made a mistake by hand, sorry.) ）

The tranquility of space is unobstructed, and the aliens know that the Fourth Fleet is nearby, so they have not used the planetary engine, and the Fourth Fleet has been following day after day, but has never been able to find a chance to start.

Beidu also understood that it was not a matter to follow like this, so he simply gritted his teeth and withdrew the fleet.

The environment of space is like this, you have nowhere to hide and I have nowhere to hide within the distance of the firefight, and it is better to withdraw the fleet as soon as possible.

Ling Yu said that he was unwilling at all, and insisted on reservations, and strongly demanded that the fleet continue to follow.

Not using it now doesn't mean not using it in the future, Ganymede is currently traveling at 38 kilometers per second, and if you want to stop in the Earth's orbit, you must find a time to slow down.

But Beidu resolutely disagrees, what are you kidding, the detaching speed of the earth's orbit is 42.1 kilometers per second, and the current speed of Ganymede is only 38 kilometers, as long as the direction is correct, you can't fly out without slowing down after cutting into the earth's orbit, okay?

If Ganymede keeps going at this rate, it will be able to catch up with the back of Earth's ass in a year or two.

Watching Ganymede all the time is tantamount to letting the aliens keep chasing the Earth, so it is better to give the aliens a chance to slow down and fix them in the Earth's orbit.

Aliens don't necessarily slow down, and the key lies in these three words.

Besides, the Fourth Fleet only has a few warships, and only the Nanzhou is the capital ship, if the aliens are determined to chase the earth or slow down, and directly send a few alien fleets to send out, the Fourth Fleet will be desperately able to fight out a few enemy ships?

No matter how you look at it, there is no point in continuing to follow Europa, it is better to withdraw as soon as possible.

As a result, just a few days after the fleet was withdrawn, Europa activated the planetary engine to change its orbit, and its orbit changed from diagonal to outward, reducing the original three-month range to just over a month.

As Europa progresses, it receives more and more sunlight, and the snow and ice on its surface begin to melt, forming rivers, oceans, and lakes.

The crater created by the small celestial bodies was first filled with meltwater, and then the entire front of Callisto was invaded by the raging meltwater.

The front of Europa was attacked by expeditionary forces and international fleets in turn, and the overall height was below the global average altitude, and the terrain in the center of the front was particularly low, with the result that the entire front was basically turned into an ocean, with only some land on the edge.

The situation on the back side is much better than on the front, and when the snow and ice melt, more than half of the area becomes land.

In other words, a quarter of the area above Callisto is land, not counting the underneath the polar ice sheets.

When it reached Earth's orbit a few days away, Europa began to slow down, and it was not an ordinary deceleration, it was to push Callisto to rotate while decelerating, and by the time Ganymede got stuck in Earth's orbit, the speed had dropped to 29.77 kilometers per second, exactly the same as Earth's speed.

It is clear that the aliens are intended to stay in Earth's orbit for a long time.

At this time, Callisto did not retract the planetary engine, but continued to adjust the attitude of Europa, and when the aliens retracted the planetary engine, Europa had a rotation of twenty-one hours and a week, and a near-nonexistent magnetic field reappeared, and the strength was not low, and the center resisted high-energy particles from outer space.

At this point, it was obvious what the aliens wanted to do, and Brother Yi and Qiu Tianning sat together again, rejoicing that their previous guesses had been wrong, and at the same time they had a headache for Ganymede who stayed in the Earth's orbit.

Although the distance between the two is 60 million kilometers in a straight line, Europa is not an ordinary planet, it is long-legged, it can run, and the devil knows when they will run to Earth when they are not mentally normal.

The safest way is to knock out the planetary engine...... This topic is a cliché at all, who can be defeated until today?

The entire Callisto recovered at a speed visible to the naked eye, and within a few days, the remaining snow and ice had completely melted, the temperature quickly stabilized, and the dead Callisto turned into a blue planet with choppy waters, looking like Earth's little brother.

However, Europa's recovery is not so easy, not to mention anything else, the remaining cobalt-60 on the surface alone is enough for aliens to drink a pot, and only time can remove the radioactive fallout from all over the world.

However, this is just a human idea, and within a few days of Ganymede's arrival, swarms of giant insects with thick carapaces emerged from the ground, and they were scurrying around in groups of three and five, seemingly aimless, but in fact they were looking for the ubiquitous radioactive fallout, arching the ground with their hoe-like mouths, and eating all the radioactive dust they could find.

As soon as the radiant worm appeared, it attracted the attention of the earth, but after observing it for several days, it was clear what these big guys were doing, until the place where the radiata had cleaned up grew tender green shoots, and the intelligence officer in charge of observing Europa suddenly realized.

The intelligence officer was very curious, and did not know how the aliens cleaned up the radiation dust in the sea, probably because the intelligence officers liked to get to the bottom of it, so he immediately called up the observation records of the ocean, and after careful analysis, he found that there were also giant insects in the water, but the appearance of the insects in the water was more suitable for underwater.

At this point, the last shackles of Callisto Zero's recovery have been lifted, and unless humans take the initiative, there is no obstacle to Callisto Zero's recovery.

The first brother doesn't know whether the recovery of Europa is good or bad, on the one hand, he is very willing to see the recovery of Europa, because in this way, the aliens will have their own habitable planet and will no longer have to rob the earth; But on the other hand, he is worried that Ganymede will become a bridgehead for aliens, and how conflicted his feelings are.

Deep down, he even had the idea of snatching Europa and turning it into a human colony.

Of course, just think about it, there are so many underground caverns in Europa, even if you concentrate the world's military power, you can't do it.

When a layer of new greenery gradually spreads over the land of Europa, the Fourth Fleet finally returns to the long-lost Earth, and the fleet first arrives at Beiyue Island and stops in Space City.

As soon as Ling Yu came out of the Nanzhou, he received the news from Europa, and he was so angry that he hadn't eaten for a day, and he almost didn't bite the root of his teeth with hatred, and he regretted it so much.

If it weren't for Europa's hibernation when he changed tracks, he would have had to take the fleet back to the pistol.

The countries did not relax their vigilance because the aliens did not move, and the North Moon Continent Fleet and the International Fleet have entered the first level of alert, and they can set off at any time as long as they receive orders.

The ground forces of various countries are the same, all of them are ready for battle, and even the US troops who counterattack South America have received orders to rest and recuperate.

As for Africa, well, it's been waiting for the U.S. military to recover South America and free up their hands to help recover Africa.