Restricted by many factors, humans may never leave the solar system Restricted by many factors, humans may never leave the solar system
Scientists deciphered a mysterious signal 50,000 years ago, the content confuses people Scientists deciphered a mysterious signal 50,000 years ago, the content confuses people
The civilization of the universe can be divided into four levels. How many levels of civilization will human beings become in the future? The civilization of the universe can be divided into four levels. How many levels of civilization will human beings become in the future?
Why should the earth’s oxygen content be maintained at about 21%? What are the consequences of high oxygen content? Why should the earth’s oxygen content be maintained at about 21%? What are the consequences of high oxygen content?
The evolutionary path that life generally chooses is aging, not immortality. Why? The evolutionary path that life generally chooses is aging, not immortality. Why?
If the spacecraft is too fast, will it be destroyed by cosmic debris? The probability is so small that you don’t believe it If the spacecraft is too fast, will it be destroyed by cosmic debris? The probability is so small that you don’t believe it
In the animal world, males are generally more beautiful than females. Why is the opposite in the human world? In the animal world, males are generally more beautiful than females. Why is the opposite in the human world?
The giant tortoise reappears 113 years after its disappearance, and the new mass extinction is speeding The giant tortoise reappears 113 years after its disappearance, and the new mass extinction is speeding
The rover took photos of suspected “human bones”. Is this true? The rover took photos of suspected “human bones”. Is this true?
The following three technologies, as long as human beings master all of them, it is possible to enter the ranks of advanced civilizations The following three technologies, as long as human beings master all of them, it is possible to enter the ranks of advanced civilizations