The neighboring galaxy 4 light-years away, there may be living planets in the habitable zone, humans should be careful The neighboring galaxy 4 light-years away, there may be living planets in the habitable zone, humans should be careful
Alien civilizations may use neutrinos for communication, and in the future humans may also hope to hear Alien civilizations may use neutrinos for communication, and in the future humans may also hope to hear
Alien civilizations may have already observed the earth, but the cosmic distance is exaggerated, and they cannot touch each other. Alien civilizations may have already observed the earth, but the cosmic distance is exaggerated, and they cannot touch each other.
Scientists say: Alien civilizations may have been to the earth in 2017, has the earth been exposed? Scientists say: Alien civilizations may have been to the earth in 2017, has the earth been exposed?
Humans may be the “prisoners” of alien civilization exiled to the earth, and the moon is a monitor? Humans may be the “prisoners” of alien civilization exiled to the earth, and the moon is a monitor?
Why do people think that aliens are better than humans? Determined by the distance of the universe Why do people think that aliens are better than humans? Determined by the distance of the universe
The neighboring galaxy 4 light-years away, there may be living planets in the habitable zone, humans should be careful The neighboring galaxy 4 light-years away, there may be living planets in the habitable zone, humans should be careful
Why didn’t the advanced civilization visit the earth? Maybe in their opinion, the level of human civilization is too low Why didn’t the advanced civilization visit the earth? Maybe in their opinion, the level of human civilization is too low
Humans’ methods of searching for alien civilizations may be wrong, and scientists have put forward new ideas. Humans’ methods of searching for alien civilizations may be wrong, and scientists have put forward new ideas.
If alien civilizations attack the earth, can the current strength of mankind be defeated? If alien civilizations attack the earth, can the current strength of mankind be defeated?