How life arose on earth.
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To explain that origin at the end of the 19th century, a proposal arose that is still valid today, at that time scientists speculated that life could have started in a small warm pond, in a mud or chemical soup also called primordial soup. .
That was the theory but, to verify it in 1953, a historical experiment was carried out. Stanley Miller and Harold Clayton from the University of Chicago tried to reproduce those original conditions inside a container in their laboratory, for which they filled a closed chamber with methane gas, ammonia, water. and molecular hydrogen gases and elements that at the time were thought to be those that formed the primitive atmosphere of the earth.
To this mixture, to this primordial soup, the scientists applied the repeated ignition of an electric spark in order to simulate the discharge of a lightning storm. A week later, the researchers analyzed the contents of the container and discovered that 20 different amino acids had been formed. , that was one of the great moments of 20th century science, it demonstrated that a large number of complex organic molecules could be synthesized in the early Earth's atmosphere.
The experiment had not managed to create life, but the basic elements did, after that advance the scientists of the 50s thought that they were very close to reaching the crucial moment, finding the recipe to reproduce the spark of life but the thing was not so easy in the last 70 years the path to the origin of life has become more complicated, it is true that research is advancing but behind each door another door opens and sometimes it is discovered that the path followed was not the correct.
So the scientists found themselves on a path that seemed to have no way out. They needed a new explanation and, above all, they needed a new source of energy that would be the creator of the essential elements for life.
Looking for alternative sources of energy, some scientists pointed to the shock waves of asteroids that impacted with the earth, which at that time were much more numerous than today since the solar system was still in formation and there was much debris from the cloud. original as well as remains of small planets and giant asteroids that had been destroyed by colossal collisions with each other.
Other scientists cited that perhaps the origin could be in solar ultraviolet radiation, with much more energy and would show that our sun would have the leading role in forming the molecules that would later give life.
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