Qian Lao said to the captain: "Okay, let's analyze the data, the photos and data sent back from the deep space probe, this is a black hole, I see that although his travel route is far from our route, its strong gravity will make us fall into the black hole at this point in the route, and once this point is passed, the strong gravity will change time." And if we want to escape from the black hole, not only will we lose fuel, but we will also slow down the passage of time relative to the gravitational range, which is something we can't ignore, so I suggest that the proposal to evaluate whether the Explorer spacecraft can be accelerated with the help of the black hole needs to be accelerated, and I expect that in four days we will be in the gravitational range. ”

After listening to Qian Lao's general report, the captain arranged the remaining tasks. A group of physicists were there to calculate the mass of the black hole so that they could figure out how fast the black hole would be, and whether it would be possible to complete the mission and reach the target galaxy without sacrificing the warriors. The other group is the mission of the exploration team, which controls the deep space exploration spacecraft in the shift, gathering as much information as possible outside the gravitational range.

"Qi Ming, you are the person in charge of the shift of the detection team, and you must try your best to collect information about this black hole on the premise of ensuring the safety of the deep space drone."

"Understood, we did our best."

Because of the sudden wandering black hole, the entire Explorer saw hope, and everyone was working hard, because they knew that as long as the calculation was successfully completed once, then the warriors on the Explorer who decided to sacrifice would not need to be left in this dark desert.

Between galaxies, this is a place where the light of the stars does not shine all year round, and it appears to be pitch black to the outside world. The perilous place is fraught with danger, and the wandering black hole may be the least dangerous object, although it is a scary thing, but after all, you can detect it in advance through the event horizon and the strong gravitational pull around it, so this situation has long been expected by scientists.

Although the image sent back by the probe is very low, you can see the huge event horizon of the black hole at a glance, and through the analysis of the photo, the mass of this black hole must be not small, so it is theoretically possible.

And at this moment, Nan Jia can't help anything, the only thing she can do is to help these physicists to fight, serve tea and pour water, when she was helping, she also saw Qi Ming, Qi Ming's eyes seemed to be rekindled with the flames of war, and that feeling seemed to be that the familiar teacher Qi Ming was back. Nan Jia approached Qi Ming and put a glass of water beside him, but Qi Ming didn't notice her, still burying his head in calculating something.

At that moment a physicist jumped up, as if he had discovered something exciting, but full of doubts, and exclaimed, "Look at this planet!" Through my calculations and data analysis, I feel that this place may be suitable for human survival! You see, it's just about 30-40 degrees Celsius, its rotation period is about 28 hours of Earth Day, and its gravity is similar to that of Earth, so the only problem may be that it's too close to the black hole, and if there's a lot of water, the waves here will reach amazing heights! ”

After listening to this, Qi Ming on the side interrupted him, and then said: "If we can't accelerate with a gravitational slingshot, this planet may be our chance." ”

"That's right! Right! Right! I see, if this planet can allow our warriors who decide to sacrifice to stay for a day, or a month, then the passage of time inside is slow and the outside world, assuming that an hour inside is equivalent to 10 years in the outside world, then they stay for half a month, maybe we can come and pick them up! But at that time, only the next group or the next group of space explorers came. ”

"Isn't this a solution?"

"Yes, so far, we need more solutions, and the more solutions we have, the more likely we are to succeed." After the captain finished speaking, he said to the detection team: "You continue to collect information on the surroundings of the black hole and the new route, and send a drone over, it is this planet, we need more information." ”

The two solutions are two-pronged, and the data transmitted back shows that the planet located on the edge of the black hole does not have a lot of liquid water, so there are no monstrous waves, there is a thin atmosphere, and the data shows that its atmosphere is also slowly disappearing, but it is certain that it is no problem to reach the planet by logging in to the spacecraft and staying on it for a month.

Nan Jia was also with them, and her unintentional words caught Qi Ming's attention.

"I want to ask, if the black hole in front of us is so big, and the event horizon is so big, why did it take us so long to find out? Shouldn't such massive objects and celestial bodies have been discovered long ago? ”

Qi Ming answered Nan Jia's doubts: "Because its mass is too large, when we look at it from a distance, its horizon is like the starry sky we see on weekdays, so it can't be found, and if it is found with the naked eye alone, it is impossible, it must be analyzed through data, you look here, it is this band, this huge gravitational force and the transmitted image, so that everyone can confirm that this is a black hole." ”

"But there is another possibility, the shape of this universe is different from what we imagined, maybe the whole universe has a slope, just like when we see a ship entering the port, the first thing we see is its sailboat. It's just that we can't see the slope just on the surface. Nanjia replied.

"Maybe you're right, we didn't know it at the time, maybe one day you'll be able to prove you're right!"

After saying that, they got busy again.

It didn't take long for both calculations to come out. The first calculation is the difference in time between the planets on the side of the black hole, where 1 hour is equivalent to 10 years since the outside world, and all the right conditions for that planet make it possible to discuss the plan previously discussed.

When God gives you hope, he often beats you with a stick. Another calculation is cruel for many people, they can't save all the warriors to complete the gravitational slingshot acceleration leap, how to calculate it, they have to sacrifice some people.