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Found new evidence comet the origin of life on Earth - VIDEO PDF Print E-mail
Saturday, 22 August 2015 13:38
The idea of ​​panspermia - which consists in the fact that life on Earth originated in the bombardment of its surface by asteroids or comets - is not new. But a new study of this theory can give impetus to the development. According to scientists from Japan, held their experiments show that early collisions of comets with the surface of the planet could lead to the transformation of the amino acids in peptides, which were the first "building blocks" of life. This discovery may help explain the origin of life not only on Earth, but also on other planets, according to its authors. Dr. Harun Sugahara from the Japan Agency for terrestrial and marine science and technology, together with Dr. Koichi Mimura of Nagoya University, both academic institutions in Japan, reported on "shock experiments with frozen mixture consisting of amino acids, water ice and silicate (forsterite) at low temperatures (77 K) "in their published article. "In these experiments, frozen amino acid mixture was sealed in a capsule and ... vertical gun was used to simulate the impact of what is happening in a collision." Scientists have studied the resulting mixtures of the experiments performed by gas chromatography and found that some of the amino acids joined after impact in short peptides comprising up to three amino acid units (a tripeptide). On the basis of experimental data, the researchers have produced estimates showing that the probability of "building blocks" of life in collisions with comets is quite high as in the case of the Earth, and in the case of other celestial bodies. Sugahara Mimura and published their work in the journal Icarus.