贝努小行星样本中发现生命必需糖类

Core Findings - An international research team has discovered essential sugars in samples from the asteroid Bennu, which aids in understanding the origin of life on Earth and the potential for extraterrestrial life [1] Group 1: Research Findings - The research team, including institutions like Tohoku University and Hokkaido University, analyzed samples collected by NASA's OSIRIS-REx spacecraft and identified multiple essential sugars, including ribose and glucose [1] - Previous analyses of samples from Bennu and the "Ryugu" asteroid had found nucleobases and amino acids but had not identified essential sugars until now [1] - The discovery of sugars provides further evidence for the hypothesis that life's building blocks may originate from beyond Earth [1] Group 2: Implications for Life Origin Theories - The absence of deoxyribose, a component of DNA, in the samples supports the RNA world hypothesis, which posits that early life was centered around RNA molecules before evolving into DNA [1] - The findings have been published in the academic journal "Nature - Earth Science," contributing to the ongoing discourse on the origins of life [1]