Normally, the core of a planet is scorching hot.
Not only is most of the energy in the early days of the planet’s birth sealed in the core, but at the same time, in the early stages of planetary solidification, the scorching hot molten material produced inside the planet will also be transferred to the core under the action of gravity and osmosis effects. If the rock is the main body planet, the radioactive substances accumulated near the core can usually reach millions of times the concentration on the surface. In this environment, the highly radioactive core is almost equivalent to a thermal power plant that continues to carry out slow nuclear reactions, and the heat cannot be vented , would eventually heat the Earth's core into a scorching ball of liquid metal: even diamonds would become as soft as butter under the astonishing pressure and temperature, and no matter how high the temperature, matter could only be liquefied here, not gasified. .
The above is the normal version of the core.
Some of the Earth's core is cool—cool compared to the hot core. Even a planet with a long lifespan is coming to an end in the constant evolution. The activity of the core will gradually decrease, and the radioactive material will slowly decay to the point where it cannot release heat. The stage of the entire planet from youth to middle age is from the surface to the The process of cooling the core layer by layer, and in the case of being far away from the star, the cooling rate will be faster. When a planet enters old age, the core will become close to the solidification point of iron metal, after stripping its crust and mantle , you will see a dark red alloy giant ball, showing the vicissitudes of time in the desolate space, lonely and cold, and the slowly dimming flame in the center of the earth is the twilight candlelight of an old planet.
The above is the core of the literary version.
There are also some earth cores that take the non-mainstream route. The highly skilled demolition team threw the entire core of their planet to nowhere, leaving a warm burning rock crust that provides heat and light, and then they are on the planet. Plant some huāhuā grass in the big hole in the center, and then insert a theme park sign—let’s call this kind of core the ** version.
"This... what the hell is it?" Looking at the bright underground world and the green land in front of me, I was dumbfounded.
"This... what the hell is it?" Lilina was also dumbfounded looking at the giant vines on the green land that moved slightly and were unknowingly many kilometers wide.
"A smaller planet? Stuffed in the core?" The corner of the sister's mouth twitched a little. "And the vegetation is dense. They grow too huge."
"Maybe it's because of the direction of gravity?" I let the 700 billion descend slowly, "The gravity of the green core below is one-thousandth of that of the earth's surface, and the surrounding mantle almost cancels out the gravitational force in every direction."
"Maybe." Sandora said noncommittally, she probably felt that the huāhuā grass growing in the core of the earth was not a problem worthy of attention.
It took us a long time to pass through the mantle layer, partly because the 700 billion slowed down the cruise speed, and partly because the alloy tunnel was not straight: it followed a gentle parabola leading to the center of the earth, halfway It seems that some giant facilities buried deep in the mantle are bypassed, and radar shows that those giant facilities that are bypassed have extremely high energy reactions. Maybe they are the green star's psionic furnace or something. When I passed through the last spherical shell barrier, I thought I would enter a sea of flames. Anyway, under normal circumstances, the center of the earth should be scorching hot, a purgatory of molten iron, but in fact the sea of flames did appear, but it was behind us: the earth The heart is completely hollowed out, and the core of the earth is gone. Only the inner spherical shell of the earth's core (or the bottom layer of the mantle) spreads raging magma rivers, and these magma rivers run on the partially cooled mantle, like the upside-down earth and upside-down rivers, lakes and seas. The mantle in the field of vision is black and red, indicating that their temperature is at least lower than the melting point of iron, and the thick liquid rock and metal flow that still maintains high temperature flow slowly on this upside-down land, like a dazzling fire dragon.
However, at the place where the earth's core should be, there is an extremely contrasting scene: a sphere with a radius of 1,500 kilometers is suspended there, as if it is another planet one size smaller, and there is no rushing water on its surface. lava and iron flows. There was no raging sea of flames either. On the contrary, under the protection of a dark barrier, this "star within the star" with a radius of 1,500 kilometers was densely covered with lush green vegetation.
It is even so dense that no ground substance can be seen at all.
"Ah Jun, to be honest, I have never seen such a scene in tens of millions of years." Even Sandora opened her eyes wide and said slowly in a surprised tone. "It's...beautiful. Spectacular, not technically incomprehensible. But the inventiveness of this project is just...unbelievable."
In the end, she used unbelievable words to describe the magical star in front of her.
700 billion slowly hovering at the gravitational balance point, 537 kilometers away from the bottom of the mantle, and 200 kilometers away from the small green planet below. Here, the gravity is zero. This is a very strange phenomenon. As far as a normal planet is concerned, its gravitational force points to the center of the earth, regardless of any holes near the center of the earth. However, instruments show that after passing through the boundary line at the bottom of the mantle, we have entered a modified gravity environment, and part of the gravity comes from the front The small green planet points to the center of the earth, and the other part of the mantle layer whose gravity is in all directions, they are actually facing the opposite direction: pointing to the surface. This is definitely not formed naturally. Perhaps this is some kind of safety device of the green star. The original builders directed the gravity of the earth's center in two directions, forming a wide enough safety zone in the middle to prevent the magma flowing on the mantle from The molten iron falls like a waterfall on the ecological planet below, and it is also like an invisible cushion, preventing the planet in the center of the earth from being crashed.
Tavel took a deep breath, released a set of twenty-two probes, and then quietly waited for the feedback. It can be seen that even a super scientist like her is a little [excited] at this time. In Sandora's words, perhaps the spectacle in front of me can be explained technically, but this creativity, and this magnificence The engineering intent, however, is unbelievable.
"There are two pieces of land, no sky." Because of the loss of gravity, Qianqian simply floated back and forth in the back half of the unusually wide carriage. With forests, I saw this in my dreams when I was a child, both grounds are upside down... "
I thought about it for a while, and finally understood: she was confusing Alice in Wonderland with the part of Journey to the West Flame Mountain, of course, it is also possible that the Demon Altar Fighter and the Third New Tokyo were mixed together...
Now there is no concept of up and down in this place. The bottom of the mantle is equivalent to the sky for the little green planet, but looking at it from another direction, it is a blazing earth. However, out of habit, we still put the " A star within a star" is regarded as below. Tavel completed a preliminary assessment of the environment here: "The highest temperature of the upper mantle layer is only about 3,000°C, and the lowest temperature is 700°C, which is very uneven. There may be an energy system that is still regulating the environment of the green star's core temperature. The green core is a medium-density celestial body, composed of soil and rocks. The vegetation on the surface is confusing: so many plants show a life reaction on the device, which is too abnormal."
"Then the whole small planet is a biological body?" Sandora showed an interested expression, "Let's go down and have a look. Tavel, let your assistant stay at the gravitational balance point temporarily, and continue to observe this geocentric celestial body. I always feel that this place has something to do with those hibernation chambers in the mantle."
A team of scientists opened a temporary working platform on the gravitational balance point, which is a triangular floating island covered by a psionic shield, and we slowly descended on 700 billion. The operation process was very careful, because Tavel was afraid We will destroy the little green planet ahead.
"The center of the earth is filled with hot air of thousands of degrees." Tavier pointed to the inner star, which was covered by a dark barrier at a height of more than ten kilometers. "This barrier protects the ecological circle inside. You'd better First turn off the psionic shield of the aircraft. The barrier outside the target seems to have little energy, and the psionic energy may penetrate a big hole in it. Theoretically, it is."
I can guess the latter words without her saying: the fragile plants on the inner planet will be wiped out in a fire, and it may not even take a few minutes.
Seven hundred billion closed the shield, relying only on the armor layer and the airtight force field to resist the thousands of degrees of high temperature outside: but this is nothing to the transportation vehicles made by the empire. Everyone couldn't help being nervous when passing through the fragile shield. I was ready to activate my ability to plug the loophole if the situation got out of control, but fortunately everything went smoothly, and the sky over the small green planet was dim. His shield has withstood the test, it only flickered partially.
We landed slowly in a dense virgin jungle, seven hundred billion scorching shells scorching some vegetation. But overall. This landing is quite environmentally friendly.
"It is very close to the environment of New Eden IV, with a slightly higher temperature. The air contains oxygen, but it is not suitable for human habitation: the oxygen content is too low, and the gravity is not enough."
Sandora jumped on the spot while talking, "There is artificial gravity under the shield, but the gravity is only a little bit stronger than the surface of the moon. If it is not intentional, the artificial gravity system here needs a major overhaul."
"I hope it's not the latter," Tavel murmured, and took out two sophisticated hexagonal devices. I felt more and more that she was like a robot cat, always pulling out a bunch of high-tech from the portable space. Two life detectors, the result is still the same, there is only one creature here, which is the planet under our feet: if it is a planet."
Of course it is a planet. Anyway, I don’t believe that under normal circumstances, the core of the earth can shrink away from the mantle for nearly a thousand kilometers, then cool down, grow huāhuā grass on it, and finally have its own rotation period and angle: this is just 700 billion scans after the conclusion. I feel a little lucky now, the system composed of the Green Star and its "star within the star" seems to have a set of self-protection devices, which ensured that it is still stable with each other after being dragged by the imperial army and transferred to a world, otherwise this little star The green star of number one must have crashed into the mantle. However, this system is not unexpected. After all, Green Star originally had the ability to sail across the world. Now it is just a scrapped superworld engine. The safety lock prepared for this engine does not necessarily have to be scrapped too, right
The weak gravity, the unbelievably lush primitive jungle, and the huge plants, walking in such a place, we can jump up to a height of more than ten meters with just a single jump, and it feels like walking in Alice's dream world. After walking past a huā that was at least three stories tall, I felt that I suddenly understood what Ding Dong's usual perspective was like.
"I think there is a sense of incongruity here." Sandora didn't like the feeling of walking through the forest and trees in microgravity, so she simply floated in the air while whispering, "Some things are not [real], the ground No problem with these giant vines, but... wait."
Sandora stopped suddenly, and then a golden halo slowly flowed through her hair. She felt the surrounding environment, nodded: "So that's the case, I was negligent."
As she said that, she casually pressed on a gigantic shrub, and with just a slight impact of her mental power, this seemingly solid plant turned into a green light spot in the blink of an eye.
"It's a mass projection." Tavel reached out to catch these light spots, and watched them slowly recombine into a colorful bird—half the size of Pandora. The current Tavel is a mass projection. I have never used this kind of thing. It is hard to imagine what kind of feeling the body of this form will have, but I have heard about the characteristics of this technology. It can create a Exactly the same mirror image, mirror image has entity. It can affect the material world like a normal body, and can even simulate the physical strength of the main body, but the mass projection cannot carry the special abilities of the main body, such as the large number of scanning components in the [body] of the apostle of Xiling: the mass projection is only A terminal that is convenient for work, tangible but invisible. Therefore, Tavel needs to use various external devices (scanners, probes, etc.) when working with mass projection, and the functions of these devices are already available on her body, and therefore, she failed to discover them in the first place. The environment here is abnormal. It was Sandora who discovered these secrets. "The projection stability is much worse than that produced by the Empire's technology, but the visual effect is more realistic. If you only use the conventional senses, you can't tell the truth from the fake. But you can find it with any kind of energy radar." These projections are unreal: they have a single energy response and no signs of life."
"That is to say, only the vines under our feet [real] exist, and everything else is an illusion."
The elder sister nodded and said that she didn't like the feeling of being light and floating here but whether she was tripped by vines, so she floated side by side with Sandora in mid-air. Suspended forward.
Qianqian didn't know what to think of. Clumsily climbed to the top of a plant and yelled loudly: "Is there-someone? Anyone-answer-?"
I hurried up and dragged down the girl who was always having a fit: "What are you talking about?"
"Don't tell me. She's not talking nonsense." Sandora floated over with a smile, "I feel something just coming out of the vines in the distance, and it's approaching here."
We stopped in surprise and waited patiently for a while. After a while, a cluster of huge leaves not far away suddenly rustled, and then, under everyone's amazed eyes, a tree with pointed ears and a A little girl with a hunting bow came out from behind the leaves, looking at this side with bright light green eyes in shock.
The little girl is wearing light and close-fitting clothing that is suitable for walking in the woodland. The white shirt has green huā patterns on the edges. The material of the clothes cannot be seen. It is a bit close to leather, but it looks extremely soft. She wears a pair of leather ropes under her feet. Tied up short boots, the boots were still stained with mud, the girl looked about twelve or thirteen years old, with a slender body but not thin, with short green hair and a pair of pointed ears protruding from the short hair Come out. It has small and delicate facial features, fair skin, and similar facial features to the girl in the dormant cabin we found on the "above". Finally, my eyes fell on the other party's hunting bow—it was obviously a toy. First of all, it Its volume is completely designed according to the figure of a twelve-year-old girl, and it is probably not very powerful when it is full. Secondly, there is a small grass doll tied under it. No matter how it looks, this thing does not look like what should be on a weapon. The most important feature is the quiver crossed with the hunting bow. The arrows in the quiver are placed in a mess, and some arrows are pointing upwards. I can swear with integrity that this kind of bow and arrow with a leather plug as an arrow is definitely only provided to Children under the age of fifteen use…
"Mass projection."
Sandora said in the spiritual link, I understand: the little girl in front of me is not real.
"Ah! Intruders!"
The little girl looked at us face to face for five or six seconds before she came to a sudden reaction, then clumsily took off the small hunting bow on her back, bent the bow for five seconds to set an arrow, and then frantically turned the arrow around and rushed towards us. We then aimed for a long time, wobbled and pulled the bow for a long time before weeping and said: "Don't move, I will aim in a while, you wait a while..."
Everyone: "..."
"Ding Dong doesn't need to worry about his intelligence." Lin Xue tricked her head and said in a low voice.
Then an arrow with a leather-tipped arrow finally pierced through the air, swaying and hitting Lin Xue's forehead with a "pia ji" sound, and stuck there. The eldest lady's face froze, and I turned my head and popped out: I can't tell, this silly little girl is quite accurate, and she shot her head with an arrow.
"Ah, I'm sorry, I wanted to shoot that man's knee, but I missed it..." The panicked voice of the little girl came from the front.
I:"… "
A circle of people burst into one piece!
Lin Xue pulled out the harmless toy arrow on her forehead and threw it back to the little girl, then stepped forward, the little girl followed step by step, with a nervous expression on her face: "Don't come here! Intruders! Here It's a forbidden area! No one can come in! Get out, or the chief patriarch will be angry! Hurry up... Wow!"
The little girl stepped on the ground and fell off the vine, sitting on the ground and crying loudly.
Sandora frowned, her tone full of helplessness: "Ah Jun, if someone uses quality projection just to make such a joke for us, then it's really bad."
"There is no hostility, and there is no danger." Lin Xue shook her head and said, and then ran forward with her elder sister to help the little girl who was in pain from the fall. I felt a little out of harmony, and after thinking about it, I said to Sandora: "Hey, will the mass projection hurt when you fall?"
"Well, theoretically, the quality projection will ignore the too strong [limb] sensation." Sandora shrugged, "But the quality projection here uses a technology different from that of the empire, so it's not sure, maybe they Integrate the [real] feeling into the projection, although I think this is a stupid idea."
After a period of confusion, the elder sister managed to appease the messy little girl. It may be the effect of some kind of bear child controlling the aura again. The little girl was brought to us, with tears in her eyes, and looked at us timidly. : "You don't eat people, do you?"
I... I'll go! What the hell did we pick up and come back, why is there such a strange creature in it!