Success was not revealed, and Hai Ge could only hear his voice. "The location where we are currently standing is on the west coast of the Pacific Ocean, and the specific geographical coordinates are 121 degrees 35 minutes east longitude and 30 degrees 51 minutes north latitude," he said. Viewed from this angle, the sun shines brightly but softly, because we are far away from it compared to the equatorial region. ”

"So, we're still on the ground?"

"Yes," Chenggong replied, "Nishijin City is the starting point of the fantasy environment, and I have no right to tamper with Mr. Wedel's setting." All you're seeing now is a hologram I've built with nanoparticles, and after the screening, we'll have to go up the second step of the stairs from the right exit. ”

"It's really just my eyes that have changed, and the scenery of the wasteland hasn't changed at all." Haige was slightly disappointed. But this kind of visual restructuring is also very interesting, and at the same time he is disappointed and somewhat new surprises.

Chenggong asked, "Sir, if there is no sunlight shining in front of you, can you tell the difference between the top and the bottom, the left and the right in the dark?" ”

Hai Ge thought for a moment and replied, "Maybe, I can think of the place where I step on my feet as down, the top of my head as up, my left hand as left, and my right hand as right." ”

"Good. So what if your feet float off the ground? Just like now, you don't feel the ground, can you still find a concrete sense of direction? I recommend you close your eyes to experience. ”

Hai Ge obediently closed his eyes, and the feeling of flying hydrogen balloons returned, and he was empty beneath him. Having lost gravity, his only assistant in measuring direction, he felt completely lost in the air.

"Of course not," he truthfully described his feelings at this time: "After closing my eyes, I can neither see the light nor find support, the only thing I can feel is myself, how can I be a reference for the direction?" If I was alone in this environment, I would feel scared because I didn't know anything about the space. I would think that maybe the place I was in was small, like a sealed jar, or maybe it was so big that I couldn't find the edge no matter how far I flew. Isn't this, as they often say, chaos? ”

Chenggong said: "Your description is unassailable, when the universe has not yet formed its current scale, it is a chaotic space without direction and without time. It exploded from a singularity that collapsed into infinitesimal sizes, and after the explosion, we can think of it as a giant vacuum tube. The vacuum tube contains only basic particles such as neutrons, protons, electrons, and photons, and they form atoms, nuclei, and molecules as the vacuum tube expands and the air inside the tube falls, and gases appear. From that time on, celestial bodies began to form, and their initial state was a nebula, which had a mass, and the mass distorted space, resulting in the creation of a force, which we call gravitation. ”

When he successfully said "gravitational force", Hai Ge suddenly felt his body weigh down, as if the gas that filled his lungs was released, and his feet sank and touched the solid ground.

Success continues: "Because of the pull of gravity, your feet are separated from the ground, and it is natural to think that the direction of your feet is down, so gravity helps you establish an important rule called 'order'. However, as you already know, gravity is ubiquitous in the universe, so it organizes all kinds of celestial bodies that wander in the universe, and through gravity, they attract each other to form different galaxies in an orderly manner, so that the orbit in the galaxy is also beginning to take shape. In the solar system, for example, the sun has the greatest gravitational pull on Mercury, Venus, Earth and Mars, and these four planets are called terrestrial planets and orbit in perihelion. Jupiter, Saturn, Uranus, and Neptune have little gravitational pull, and they move away from the Sun as Jupiter-like planets in their perihelional orbits.

"Gravitation is a miraculous force, but it does not come from the God that you earthlings believe in, but from the mass of the celestial bodies themselves. It is precisely because of its mass that celestial bodies are attracted to other substances, and the more massive the matter, the stronger the attraction. ”

With Success's announcer-like explanation, the blurred light above Hai Ge's head compressed together, forming a bright fireball. The fireball is fixed as a whole, but the surface changes slightly from time to time. Hai Ge could clearly see the black dots covering the surface of the fireball, the flare that suddenly erupted but quickly extinguished, and the ethereal corona of flames, which kept jumping like the wind blowing. They neither burn more nor go out when they run out of fuel.

"What we're seeing now is a healthy sun, right?" Haige asked.

Successfully replied: "Yes, this is the sun a billion years ago." At that time, it was still a yellow dwarf star about 330,000 times more massive than Earth, and it was constantly undergoing nuclear fusion reactions inside its body to release huge amounts of light and heat. Even if a billion years have passed and the timeline has come to the point where we are today, this golden beauty is still young, less than five billion years old. Based on its mass, it has about another 5 billion years to live. ”

"So the sun that has come to meet us at this moment is only four billion years old." Haige quipped. When I turned my head, success reappeared, still wearing the waiter's white dress, and rubbing my hands again.

So away from the sun, in the third orbit counted from it, a small, round black shadow appeared. The shadow seemed to be circling around it, and at the same time it kept turning.

When the black shadow runs to the front of the sun, the soft light illuminates it, and it suddenly reflects a crystal blue, which is so beautiful that people are stunning.

Chenggong said: "I ask for your understanding, in order to save the light energy for my normal work, I have to omit the motion patterns of the other seven planets in the solar system that also revolve around it, but you should not think that the earth is directly opposite the sun, in which case the temperature of this planet is too high for human habitation." In fact, between the Earth and the Sun, there is still Mercury and Venus, and the Earth still relies on Mars behind it, and when the Sun dies, these four types of terrestrial planets will also suffer the disaster of destruction. ”

"The sun, why did it die...... Doesn't she still have five billion years to live? Haige thought sadly. But at this moment, he was more inclined to listen to the successful explanation, so he did not rush to ask.

Perhaps sensing Haige's eagerness to find an answer, he successfully accelerated the speed of the lecture: "As I said, the gravitational pull emitted by the sun attracts the earth to orbit around it, so the question is, why hasn't the earth been sucked into by the sun and turned into gas by participating in nuclear fusion reactions over a long period of time?" This is because the earth itself also has a strong gravitational pull that can resist the attraction of the sun. The two gravitational forces compete with each other, each wants to conquer the other, so a great war breaks out, and the final result of the battle is that the earth has found a fulcrum suitable for itself to settle down, and the two forces reach a balance, and the earth begins to run smoothly. ”