Scientists demonstrate in a laboratory the role of comets to create life – The Nación.com.py

Paris, France | AFP |

The impact of comets hit the earth 4,000 million years ago may have had a role in the emergence of life in the Earth, says a group of Japanese researchers, who tried to reproduce this “formula” in a laboratory.

The scientists, who presented on Wednesday the results of their research in geochemistry Goldschmidt2015 conference in Prague, compiled a list of substances to reproduce the reaction in a laboratory.

In the recipe, the researchers mixed amino acids, ice and silicate at temperatures of -196 degrees Celsius, a protein mixture in comets substances as have been found the latest space missions.

The scientists then added a propellant, to simulate the effect of a comet colliding with Earth, causing some amino acids are transformed into short-chain peptides, complex molecules often considered essential for the development of life.

“Our experiences show that the cold existing in comets played a key impact on this synthesis,” he said in a statement Haruna Sugahara, the Japanese Agency Science.

“The production of short-chain peptides is a key step in the chemical evolution of molecules. Once the process starts, much less energy is required to form longer chains of peptides in a terrestrial and aquatic environment, “the statement added.

The researchers noted that the impacts of comets, which are usually associated with events of mass extinction, probably they got a “push” process for the formation of life.

A similar process could also have occurred elsewhere in the cosmos.

The results of research Haruna Mimura Koichi Sugahara and Nagoya University have not yet been published, but according to Mark Burchell of the University of Kent, “constitute a significant contribution to the study of the origin of complex molecules the universe “

The mission of the European probe Rosetta, who accompanied the comet 67P / Churyumov-Gerasimenko, confirmed that the celestial body was rich in organic matter

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