Why do you say that human beings have been extinct for four times? How many times have humans been destroyed?

Legend has it that prehistoric civilization was extinct five times for various reasons. Details are as follows:

1, 2 billion years ago, a civilization was born and used nuclear energy, which was finally destroyed by nuclear war. This may explain why uranium mines in South Africa had nuclear reactors 2 billion years ago.

250 million years ago, a sub-civilization was born, which could make flying machines and go into space, and was finally destroyed by aliens. This may explain the statement that the moon is hollow and it is monitoring the earth.

Three civilizations were born 65 million years ago, so we can make use of the last one. People born fly less and are finally destroyed by asteroids. This may explain the extinction of dinosaurs and a large number of creatures.

Fifteen million years ago, when the fourth civilization was born, nuclear energy was not used, but it was possible to observe space from a distance and make flying machines, which was similar to our civilization fifty years ago. Eventually destroyed by the ice age.

Seven million years ago, the fifth civilization was born, which could use a lot of nuclear energy, slightly higher than modern civilization, and was destroyed by the global flood.

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The crisis facing mankind:

Yongchun Zheng believes that the crises that mankind may face in the future mainly include asteroid impact on the earth, super solar storm, super volcanic eruption and so on.

In the face of these major astronomical disasters, mankind must plan ahead, develop some new space technologies, monitor the orbits of asteroids, and even find ways to avoid them when they may be about to hit the earth. In addition, when global warming, floods, tsunamis, earthquakes and other disasters occur frequently on the earth, it is hoped that a small number of people can emigrate to another planet as a refuge in the future.

People's Daily Online-What crises will mankind face once life on earth is extinct in 26 million years?