Ye Fei didn't want to refuse an old man's plea, so he could only reluctantly agree...... Although Professor Xie can rejuvenate himself at any time.

In the depths of his heart, he did not have the idea of doing his best to complete the task.

Professor Xie let out a sigh of relief, he couldn't ask for more. He had already made up his mind that if Ye Fei's final decision was still to withdraw, then he would ask Ye Fei to give him a battleship, and he would take the battleship into the nebula alone, and then fly to Betelgeuse, even if he died in a corner of the nebula that no one knew.

Ye Fei discussed with the fifteen captains, including Jiang Yufei, for almost half an hour, and finally came up with a plan of action, and then the fleet was divided into four according to the plan, except for the Xinyuan leading the three battleships to stay put, the other three or four formations flew to other directions of the nebula.

Twelve hours later, all the battleships had arrived at their intended positions, and if a ruler long enough to measure the positions of the several formations, it would be found that the four fleets were connected in a straight line, forming a tetrahedron with a side of twelve light-years long that could enclose the nebula.

A large number of observations were immediately collected from various formations to the Xinyuan, and a relatively complete digital model of the nebula was gradually formed in the ship's computer.

Theoretically, a regular tetrahedron composed of four points can indeed enclose the nebula, but the nebula is not a spherical planet with a relatively flat surface, and the outer surface of this thing is extremely irregular.

"It looks like cheese has been made into a nest by rats." Hong Liang commented on the first version of the Betelgeuse Four Nebula.

Ye Fei also thinks that this version is too rough, but he thinks that the model is more like an apple that has been stopped by bugs.

He immediately gave a new order. It is required that all formations be disbanded, and a single ship will sail to expand the reconnaissance range, so as to find out the appearance and characteristics of the nebula as much as possible.

It took another four hours for the sixteen battleships to disperse more or less evenly in all directions of the nebula, and the missing parts of the nebula were quickly replenished.

In the end, what appeared in front of everyone was something with an uneven surface and a roughly circular shape, and according to the calculations, the thickest part of the nebula was about 5.5 light-years, and the thinnest part was about 4.7 light-years, and there were no dead spots in any direction. It includes the radiation zone in the direction of Betelgeuse's axis of rotation.

The location of the radiation zone is easy to judge. The ionizing radiation in that direction is too strict, and the nebula is excited by the radiation, so it appears an unusually brilliant fiery red, and the position is just symmetrical on either side of the nebula. It's like two vortices that don't spin...... Compare it to a vortex. The polar radiation of pulsars is not known to be many times more deadly. There is no comparison between the two.

Ye Fei, who got the number of nebulae, was still worried.

These numbers were recorded at a distance of about 47 light-years from Betelgeuse, and the closest position to the nebula was also a straight-line distance of 5 light-years, although the nebula spread at a slower rate. But the pace has always been unwavering, and the current situation of the Nebula must have changed a lot compared to eighteen months ago, but due to the lack of faster-than-light reconnaissance means, it is impossible to obtain more detailed numbers before the fleet reaches the Nebula.

After a discussion, Ye Fei set the breakthrough at the thinnest position.

Judging by the position of the pole, the breakthrough is roughly above the 60th parallel of Betelgeuse south latitude or 60th north latitude, that is, it is far away from the plane of the ecliptic and not close to the radiation area, so it is indeed a good place for a breakthrough.

The two closest warships soon received a direct order from the Xinyuan, and the two warships immediately began to move in the direction of the target - the distance between this and Betelgeuse is too close, and no one knows whether the space environment will suddenly change abnormally, so the battleship is advancing extremely carefully, and does not dare to carry out long-distance faster-than-light flight at all, but uses the direction of short-distance super-light flight of the sub-ship to find the way.

Constantly moving in and out of the speed of light will not only aggravate the consumption of teleportation crystals, but also delay a lot of time, but for safety, Ye Fei doesn't care about wasting more time at all.

Professor Xie was anxious, but unfortunately the command was not in his hands...... Thankfully, it wasn't in his hands.

The speed of advancing while exploring was too slow, Ye Fei simply ordered the warships located in all directions to release the reconnaissance satellites, and then all the warships were concentrated directly above the breach.

Pathfinding in the Dangerous Star Field is by no means a simple task, not to mention that the armor of the battleship is thick enough, and it is also equipped with a force field generator, but these two types of protection only serve to protect the battleship in the case of regular flight. In the case of flying faster than the speed of light, the small object that hits the battleship will be crushed by the light explosion, but once it collides with a celestial body or anything that exceeds a certain limit, the strength of the two protections stacked together will not be much stronger than a layer of paper.

The unknown danger of possible zài was intense psychological torture for anyone, and in order to prevent accidents, the battleships of the pathfinder had to be replaced every two hours.

The distance of seven light years is far enough for an ordinary planet, but for a newborn pulsar, such a distance is far from enough, the most obvious is that the radiation intensity of the space environment has been constantly changing, and every time the environmental radiation level is greatly increased, it will completely tense the nerves that have been straightened.

The fleet worked continuously for more than twenty hours, and finally came into contact with the edge of the nebula at a position about two light-years from the starting point, which was 0.3 light-years longer than the previous observations.

Touching the edge of the nebula is a triumph, but everyone knows that the real danger lurks in the depths of the nebula, and the twenty hours that have just passed are just appetizers, and the nebula, which is five light-years thick, is the main meal for the teeth.

Ye Fei felt that the best way to deal with Nebula was to use the Xinyuan to drive the teleportation cannon in front of him, but in this way, he still had to fall into a dead knot that could not enter the speed of light, and there were a lot of similar methods, all of which were not practical at all.

How can you get into the nebula quickly and safely?

If you want to be safe and fast, you can only use faster-than-light equipment to explore the way, and the fleet is equipped with a lot of magnetic missiles, but the range of this thing is too close, and the distance of a few light minutes is not enough to see.

Besides...... There are only sub-ships carried by each ship.

Ye Fei, who was unwilling, tried to contact the base star again, and tried the portal again, but the result was naturally all useless.

If the communication between the fleet and the base star is restored, Ye Fei will definitely explain the situation to the headquarters and let the above decide whether to sacrifice the subship to continue the mission, and for now, he can only make this decision by himself. (To be continued......)