Traces of extraterrestrial sugars on meteorites add more weight to the hypothesis that a meteor blitz on ancient Earth may have kick-started life by providing the necessary building blocks.
sheds new light on the question of how biology arose from non-biological chemical processes, the researchers say. This being because the sugars discovered on the meteors studied may have been a key ingredient in some of the first examples of ribonucleic acid formed on Earth.
"The research provides the first direct evidence of ribose in space and the delivery of the sugar to Earth," said Furukawa, lead author of the study."The extraterrestrial sugar might have contributed to the formation of RNA on the prebiotic Earth which possibly led to the origin of life." "It is remarkable that a molecule as fragile as ribose could be detected in such ancient material," said co-author Jason Dworkin, Deputy Director of NASA's Solar System Exploration Division.
"The sugar in DNA was not detected in any of the meteorites analyzed in this study," said Danny Glavin, Associate Director for Strategic Science at NASA's Solar System Exploration Division.
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