Secrets we can't understand
The mystery of the blank period in human evolution
The theory of evolution created by Darwin is called one of the greatest scientific discoveries of mankind, but at present, the scientific community has found a place where this doctrine is imperfect. The following is the evolutionary time table data of humans based on evolution theory. It can be clearly seen that there are two time dimensions spanning a very large "blank period".
The so-called blank period means that no fossils of this period have been discovered so far.
The ancient ancestors lived 14 million - 8 million years ago
Nanxun lives in 4 million - 1.9 million years ago
The monks lived 1.7 million - 200,000 years ago
The first blank period: a period of up to 4 million years between the ancient and the south
The two blank periods: a blank period of 200,000 years between Nanxun and the monks
Obviously, the first blank period of 4 million years is even more striking, and people have even made many bold ideas about the 4 million years of the year. But so far, it has not brought the truth to the surface, and people need constant exploration and research.
The mystery of the four strange caves in space
In addition to the black holes in the universe, scientists have also discovered white holes, hollows and wormholes in the universe, collectively referred to as "four great caves"
Black holes - can devour matter and energy, but while the black hole is constantly consuming, it also radiates particles and energy by "evaporation". It is believed that at the end of the black hole, another kind of "monster" will be born - Baidong
White hole - Contrary to the black hole, it rejects all foreign matter and energy, and its own matter and energy radiate outward. Then, if the white holes are evolved from black holes, then it is very likely that they are connected with wormholes.
The black hole is the entrance to the wormhole, while the white hole is the exit of the wormhole. 
Wormholes - shortcuts that connect the distant distances of the same universe. In theory, we enter from the black hole, and from the white hole, we can reach a very distant distance. Perhaps, in the future, it is possible to use a black hole and a white hole to create a time machine, so that time travel is also possible. But now this is just a fantasy of ours, because no one really enters the black hole and comes out of the white hole, and then tells us what he has experienced.
Moreover, the white hole is a product of mathematical derivation. The wormhole is illusory in the universe. Even if we find it, who can guarantee that our spacecraft can pass safely? 
Void - refers to the area of
the universe with less material, is the embodiment of the uneven distribution of the universe's galaxies
Stone blossom
There is a strange stone in the stone culture exhibition hall at the foot of Mount Tai. This stone can grow flowers, so that everyone who has seen it is full of surprises.
The stone is about 40 centimeters high and is shaped like a small seal with a head on its head. The surface of the stone has a small pink-red flower that will open once in a few days. The diameter of the small flower is 1-2 cm in length, and the flower is connected with the flower to form a new stone surface.
The mystery of the changed odd hole
In Guyana, Nicaragua, there is a cave with a diameter of about 345 cm. In the morning, the hole is oval. In the afternoon, it turns into a rectangle. In the early morning, it returns to an ellipse. So, the people around it think that there is a magical power in the cave. I am very afraid of the cave