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Saturday, October 22, 2016

Life on Earth was due to comets

In the academic journal Geochimica et Cosmochimica Acta published a study by experts from Trinity College Dublin on the role of comets and asteroids in the formation of life on Earth. Data collected by scientists, indicate that large meteorites brought to the planet many organic substances, and warmed the ancient ocean until needed for chemical reactions temperature.

photo: pixabay.com

Previously, many scientists have suggested that comets brought to the ancient Land of complex organic molecules such as glycine, beta-alanine and gamma-aminobutyric acid and water and the energy needed to start chemical reactions, which emerged primitive organisms. New research has allowed to find evidence of such assumptions, and have allowed researchers to hypothesize that meteorite craters themselves were a perfect environment for the formation of life.

To such conclusions researchers came studying the rocks in the pool of Sudbury in South-West Canada and one of the oldest craters on Earth. How figured out the experts 1.85 billion years ago, 250-kilometer crater left from the asteroid with a diameter of more than 10 kilometers, was filled with boiling water, in which there was a wide variety of chemical reactions. In this case, apparently, the crater was inhabited by bacteria, for which some substances resulting from these reactions were food. For a long time, the water in the crater was isolated from the ocean, but then reunited with her.

Experts suggest that even earlier, around 3.5 billion years ago — it is in these crater-lakes of the “building blocks of life” could appear first organisms.

Recently, another group of scientists engaged in the study of Mars, suggested that asteroid bombardment allowed to occur on the planet ocean liquid water and could even contribute to the emergence in this ocean of life, if it does not evaporate too quickly because of the rarefied atmosphere.

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