Many astronauts' bodies have undergone irreversible changes. Did life really originate in the universe?

How was life born on earth? Speaking of this problem, many people will think that the earth itself produced life. As we all know, the formation of life is a process from monomer to multi-body, from simple to complex. However, because the geology and biology of the earth are constantly changing with the times, it is very difficult for human beings to study the origin of life on the earth.

At present, scientists have put forward two mainstream views on the formation of life on earth, namely, the theory of cosmic life and the theory of natural occurrence, while some religious people believe in the theory of God creating man, believing that human beings and even the whole world are created by God. In the "Cosmic Life Theory", scientists believe that human beings come from outer space and the earth cannot form life on its own. Billions of years ago, meteorites brought organic matter, water ice and other substances to the earth through impact, and life was constantly evolving.

According to the theory of natural occurrence, about 3.8 billion years ago, the earth's climate in Phanerozoic period was very bad, and the earth at that time was equivalent to a pot of "original soup".

Methane and other substances form organic matter in the environment of strong lightning, high temperature and high pressure on the earth, and then form a single monocyte. It is understood that people found creatures like "cyanobacteria" on ancient rocks 3.8 billion years ago.

However, both mainstream theories are flawed. In the theory of natural occurrence, the earth had no carbon and sulfur in ancient times, and carbon and sulfur constituted the 20 basic elements of life. So it is impossible for the earth to produce life out of thin air.

In the "Cosmic Life Theory", modern scientists have also proved to people that it is difficult for human beings to adapt to life in space. Astronauts who go to the International Space Station not only need to receive a lot of training, but also have a "rejection" reaction in space.