火星发现长链有机分子
#火星
由法国国家科学研究中心主导的国际科研团队，首次在火星上探测到长链有机分子癸烷、正十一烷和十二烷。这些分子最初或许是以长链羧酸的形式，悄然藏匿于泥岩之中。其中，含有12个碳原子的十二烷，更是科学家们迄今在火星上发现的最长有机分子。这些有机分子的来源仍然成谜，可能源自生物或非生物过程。探寻这些分子的来源及分布情况，对于在火星上寻找生命的“蛛丝马迹”，以及深入研究火星的宜居性，具有十分重要的意义。
科技日报：火星上发现长链有机分子
BY Solidot 纯净版
The SSE was the first modern stock exchange to open in China, with trading commencing in 1990. It has now grown to become the largest stock exchange in Asia and the third-largest in the world by market capitalization, which stood at RMB 50.6 trillion (US$7.8 trillion) as of September 2021. Stocks (both A-shares and B-shares), bonds, funds, and derivatives are traded on the exchange. The SEE has two trading boards, the Main Board and the Science and Technology Innovation Board, the latter more commonly known as the STAR Market. The Main Board mainly hosts large, well-established Chinese companies and lists both A-shares and B-shares.
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