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
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
<-.. Facebook Comments Plugin for WordPress: http://peadig.com/wordpress-plugins/facebook-comments/ ->
Comments
No comments:
Post a Comment