"Don't interrupt!" Wu Jinling said, "I'll ask you, the light we see is actually the light that was 100 million light years ago, right?"

"Yes, that's it!" Su Yu nodded.

"Okay! Then the question is. Suppose you are driving the Sky-Saving Battleship and flying towards the light at a speed of 3 million kilometers per second, at this time, your speed is ten times the speed of light.

So, when you reach this ball of light, are you coming from the light that is 100 million years ago?" Wu Jinling asked, but before Su Yu could answer, she replied, "No, you came from the ball of light that was back then, and you would not go back to the past at all. You are still in the present!"

Su Yu nodded and said, "I understand, so that's it. But if you fly at super light speed, nothing strange will happen?"

"Yes!" Wu Jinling said, "but it takes a long distance to go!"

"How to say it?" Su Yu's interest was raised again.

"If we use this ball of light as a metaphor!" Wu Jinling said, "We are now 100 million light years away, and we see the light from 100 million years ago. If we remain still, we will have to wait 100 million years to see the light now!

However, if we fly at the speed of light, it only takes 50 million years to see the current light. If we run at the speed of light, the time it takes will be shorter.

In other words, if the scene that originally took one year to see, under the conditions of super-light speed, maybe it can be seen in just one day! If there is a tree on the light (assuming) that starts to bloom in spring, bears fruit in summer, leaves fall in autumn, and wither in winter! It would have taken a year, but it would fall into your eyes, the process speed is 365 times faster. In other words, the flow of time in your eyes has accelerated, and in one day, you can see the entire four seasons! In one minute, you can see the process of a flower from blooming to withering!

Of course, it’s not that the time flow rate has really increased, but what you see in your eyes has accelerated! It’s like using special tricks to show the process of blooming flowers on the computer screen within one minute! Do you understand?”

"Ah, so that's how it is!" Su Yu sighed.

"Of course, what's even more strange is still behind!" Wu Jinling said with a smile.

"What else is strange?" Su Yu had already vaguely guessed what Wu Jinling was going to say next, but he still cooperated with him.

“As you gradually approach the light, you will see its present in real time. Then, you surpass the light and continue to fly forward.

At this time, what will you see when you look back?"

Su Yu pondered for a moment and said, "When I look back, I see the present of light, but as I fly forward, I will gradually see the past of light!

In other words, I will watch everything I saw before again. But this time the order is upside down, from now to the past. Well, I will see that flower withering and gradually regaining vitality, then see her blooming, and finally see the branches gradually shrinking into a seedling until it becomes a seed, and then what happened before there is no seed!

It's like time goes back! I understand, "Su Yu jumped up suddenly, and then hit the top of the Duotian Zhan warship with a bang. (When you are weightless, a little force can make people fly)

Wu Jinling walked over, gently rubbed Su Yu's head, and chuckled, "Little fool, it hurts. Now I understand, it's not that time has really flowed back, it's just that you saw some images. If time is used to measure it, time is still moving forward, and that ball of light will also change, but your speed is too fast and you can no longer see its future. When you look back, you can only see the distant past. The longer you fly, the longer the past you can see, until you can no longer see it."

Su Yu smiled and said, "If my speed is only slightly higher than the speed of light, then this process will take longer than it actually happens, just like slowly regressing when playing a movie.

If my speed exceeds the speed of light, the process will accelerate. Just like when playing a movie, I get it."

"I understand, okay. The problem of super light speed has been solved. Let's take a look at what's ahead!"

But suddenly, Wu Jinling's face changed drastically and she said, "Why has the pressure become so heavy?"

Just as Wu Jinling spoke, Su Yu also sensed the sudden appearance of gravity.

It is unusual to have no gravity on the surface of astral body, but it is unusual to have gravity in the alien sky.

"Can we pass by a huge celestial body, so we are affected by its gravity?" Su Yu asked.

"But, there is no display on the instruments of the Sky-Slaying Battleship?" Wu Jinling said.

"Is this celestial body invisible?" Su Yu said.

"What celestial bodies are invisible?" Wu Jinling frowned, "No, black hole!"

The pressure of the two of them getting heavier as they talked.

Wu Jinling hurriedly put on his helmet and asked Su Yu to put on his helmet. The two of them fixed their bodies on the seat and activated the observation function of the Sky-Slaying Battleship.

At the forefront of the Battleship of Heaven, the brightest ball of light still flashed.

However, the pressure from the Sky-Slaying Battleship was getting greater and greater. Wu Jinling and Su Yu collided and communicated with each other in a moment, and reached a consensus and issued an order at the same time.

The Sky-Slaying Battleship instantly turned 180 degrees and flew back.

Although I don’t know if there is any danger, the two of them are seriously injured and have not healed, so it’s better to be cautious.

It was not until the two of them could no longer feel the pressure that they stopped the Sky-Slaying Battleship and stopped in the starry sky.

"The attraction just now came very strange, we must be careful," Wu Jinling said, "It is very likely that it is an invisible black hole!"

Su Yu nodded, turned on all the detection equipment of the Battleship of the Sky, and began a comprehensive monitoring of the 360-degree surrounding the Battleship.

Suddenly, Su Yu exclaimed and pointed to the space in front of the warship. Where were the size of a turntable, shining rings rotating rapidly.

But in the center of the ring, it was pitch black and there was nothing.

"What is that? Is it a black hole?" Su Yu asked.

Wu Jinling also saw the ring and whispered: "It's hard to say, shouldn't a black hole be invisible? Why is there a shiny ring turning outside?"

Just as the two of them were talking, the shape of a star next to the ring suddenly changed.

Next to the ring is an equally shiny blue star.

Su Yu understood that this blue star was actually a star that was brighter and more dazzling than the sun.

A star is like a block of iron, which will turn red when heated, and if heated again, the color will turn orange when the temperature rises.

As the temperature gradually increases, the color of the iron block will gradually turn yellow, white, blue and white, all the way to blue.'

Theoretically, all stars are a large cluster of gas, but there will be a fierce nuclear fusion reaction inside the gas, causing the stars to emit light and heat.

Although the sun is also a star, it is just a yellow star... It is more than one level different from the blue star in front of you in terms of temperature and volume.

This blue star is much brighter than the sun and is much larger than the sun.

However, just now, there was no such blue star here, nor a shining halo.

They seemed to appear suddenly and came out in the blink of an eye.

Su Yu and Wu Jinling also specially retried the previous observation video. In fact, there was really nothing in the moment before.

"Strange?" Su Yu whispered and looked at the blue star again. At this time, Su Yu discovered that the shape of the blue star had changed again. It was originally like the sun, and it looked like a disc-shaped star.

But now, the blue stars began to protrude slightly towards part of the ring, as if a tumor had grown on its surface.

Gradually, the shape of the entire blue star changed. It was no longer a circle, but a pear shape.

It’s just that pear-shaped tip is facing the shiny ring!

"It's a black hole!" Wu Jinling said, "The black hole is devouring the blue stars at this moment?"

As soon as Wu Jinling finished speaking, the blue stars shot out a thin line at the tip of the shiny ring.

Then with a bang, a large mass of matter was peeled off from the blue star and sucked into the ring at an incredible speed.

Then the entire blue formation began to be cracked by the car collectively, like a tornado, quickly projecting into the ring.

Relying on a section of the ring, it quickly decomposed into a thin mist-like substance, and was pumped into the ring like smoke. At one end of the ring in the courtyard, the blue stars were also constantly separated, and large clouds of smoke burst out from the blue stars and were absorbed.

Soon, the blue stars transformed into a thin line and all entered the inside of the ring.

The ring was still spinning shinyly, and the circle formed by the outermost periphery of the ring did not become larger or smaller. However, the inner side of the ring was obviously becoming thinner.

If measured by time on Earth, then the total time it takes for a black hole to swallow blue stars is 56 seconds!

Even less than a minute!

It has been confirmed now that there is a huge black hole in the center of the ring. Although the ring looks only the size of a millstone. Don’t forget that a blue star with a size far exceeds the sun is just a plate size, which is much smaller than the ring.

"It's incredible!" Su Yu sighed.

"Yes, the power of a black hole is really beyond imagination!" Wu Jinling also sighed.

"But, what is that circle of shining things?"

"Plasma!" Wu Jinling said, "There is a science fiction book, which is what it says.

When black holes swallow stars, the absorbed substances are so high that they become plasmas. (A mixture of completely ionized atoms and free electrons.)

As this plasma spirals towards the black hole, its speed gradually increases to form a disk.

In the center of the disk, the particles of the plasma are constantly sucked inward and are quickly accelerated to approach the speed of light, or even exceed the speed of light (depending on the volume and pherophagy of the black hole).

At the same time, some rays will also be emitted from the edge of the black hole. At a distance of about tens of thousands of miles away from the black hole, the pressure of these rays is enough to offset the extremely strong gravitational force of the black hole.

Therefore, at the edge of the black hole, due to the ray pressure, the plasma will not be sucked in. They will form a shiny ring and are rotating at extremely high speeds.

Even so, these plasmas will not be like this forever. They will be constantly sucked into the center of the ring and then sucked into the black hole at a more crazier speed."

"How did this black hole appear?" Su Yu asked.

Wu Jinling shook his head and said, "Black holes are formed by the collapse of stars. When a star collapses to a certain extent, its interior is very dense, even greater than that of a neutron star.

You know, the density of neutron stars is very high, and the matter on it can weigh 100 million tons per cubic centimeter!"

One cubic centimeter of 100 million tons?

When Su Yu heard this number, the first thought that slipped through his mind was: If there is a copper ore that has that density? Then doesn’t it mean that if I swallow a few centimeters of copper ore, I can evolve the copper body?

One hundred million tons are exactly the number of metals that the gold-eating brain needs to swallow.

However, Su Yu understood that it is impossible for copper ore to reach such a high density. Neutron stars, as the name suggests, refer to stellar bodies composed purely of neutrons. On neutron stars, there is no electrons, no protons, and no atoms, it is impossible to form any metal. At most, it can only be regarded as a dense substance.

"However, the density of black holes is much larger than that of neutron stars. If a star as big as the sun shrinks into a sphere with a diameter of two or three thousand meters, the density will reach tens of billions of tons per cubic centimeter, which is hundreds of times that of neutron stars.

At this time, the gravity on the surface of this star body will be very large, so great that even light cannot escape, and the human eye cannot see it, so it is called a black hole.

Because the gravity of a black hole is very strong, the matter near it will be sucked away.
To be continued...