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[转载]氨基酸,生命的起源,首次在地球之外被确认

已有 1847 次阅读 2022-6-9 13:59 |系统分类:科普集锦|文章来源:转载

 

Amino acids, origin of life, identified for first time outside Earth 氨基酸,生命的起源,首次在地球之外被确认



The first results from the initial description of the sample from asteroid Ryugu returned by the Hayabusa 2 spacecraft published in the British online journal, Nature Astronomy, December 21, 2021. /JAXA   20211221日,隼鸟2号飞船返回的小行星龙宫样本的初步描述的第一个结果发表在英国在线期刊《自然天文学》上。

 

The Japan Aerospace Exploration Agency (JAXA) probe 'Hayabusa 2' discovered "amino acids," the source of life, in sand samples brought back to Earth from the Ryugu asteroid, the Japanese financial newspaper The Nikkei reported on Monday, marking the first time that human beings have discovered amino acids, substances that make proteins, outside Earth.

据日本财经报《日经新闻》周一报道,日本宇宙航空研究开发机构(JAXA)探测器“隼鸟 2 号”在从龙宫小行星带回地球的沙粒样本中发现了生命之源“氨基酸”,这是首次人类在地球之外发现了氨基酸,一种制造蛋白质的物质。


More than 20 types of amino acids have been detected in samples Hayabusa 2 brought back to Earth from the Ryugu asteroid in late 2020, the newspaper quoted a Japanese education ministry official as saying. The official noted that amino acids, one of the first organic molecules to appear on Earth, are very important substances for living things and could hold clues to understanding the origins of life.

该报援引日本教育部一位官员的话说,在 2020 年底从龙宫小行星带回地球的隼鸟 2 号样本中检测到了 20 多种氨基酸。这位官员指出,氨基酸是地球上最早出现的有机分子之一,对生物来说是非常重要的物质,能够为了解生命的起源提供线索。


Japan's Hayabusa 2 space probe brought samples to Earth from the Ryugu asteroid in late 2020. / 

JAXA  日本的隼鸟2号太空探测器于2020年底从龙宫小行星上带回地球的样本。

 

Probe on origin of life

探索生命起源


Hayabusa 2 left Earth in 2014 and reached its stationary position above the Ryugu asteroid in June 2018 after traveling 3.2 billion kilometers on an elliptical orbit around the sun for more than three years. It finally touched down on the asteroid twice the following year and collected its first-ever subsurface samples from an asteroid.

隼鸟2号于2014年离开地球,并于20186月到达龙宫小行星上方的静止位置。此前它在绕太阳的椭圆轨道上运行了3年多时间,飞行了32亿公里。 在随后的一年里,它终于两次降落在这颗小行星上,并首次从一颗小行星上采集了地下样本。


In December 2020, a capsule that had been carried on a six-year mission by Hayabusa 2 delivered more than 5.4 grams of surface material to Earth from the Ryugu asteroid 300 million kilometers away.

2020 12 月,隼鸟 2 号执行了六年任务的太空舱从 3 亿公里外的龙宫小行星向地球运送了超过 5.4 克的地表物质。


Launched in 2021 with a full-fledged investigation of the sample, the probe of Ryugu was conducted jointly by the JAXA and Japanese research institutions, including the University of Tokyo and Hiroshima University.

龙宫探测于 2021 年启动,对样本进行了全面调查,由日本宇宙航空研究开发机构和包括东京大学和广岛大学在内的日本研究机构联合进行。


Aiming at unraveling the mysteries of the origin of the solar system and life, the probe suggested the presence of water and organic matter with previous analysis of the samples.

为了揭开太阳系和生命起源的奥秘,该调查通过先前对样品的分析表明存在水和有机物。


Although it is still unknown how amino acids arrived on Earth in ancient times, one theory says they were brought by meteorites with amino acids being detected in a meteorite found on Earth while another possibility is that they were attached on the ground.

尽管目前还不知道氨基酸是如何在古代到达地球的,但有一种理论认为,氨基酸是由陨石带来的,因为在地球上发现的陨石中检测到了氨基酸;而另一种可能则认为,氨基酸是附着在地面上的。


This time, Hayabusa 2 delivered the subsurface materials without them being exposed to the outside air after collecting the samples that had not been weathered by sunlight or cosmic rays, showing for the first time that amino acids exist on an asteroid in space.

这一次,隼鸟二号在采集了未被阳光或宇宙射线风化的样本后,在不暴露于外界空气的情况下,运送了地下物质,首次表明氨基酸存在于太空中的小行星上。



China Global Television Network 中国环球电视网

Space 12:25, 07-Jun-2022


原图下载链接地址:

https://news.cgtn.com/news/2022-06-07/Amino-acids-origin-of-life-identified-for-first-time-outside-Earth-1aFikOKV9sY/index.html







https://m.sciencenet.cn/blog-3389947-1342242.html

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