V2EX biosignature

Biosignature

释义 Definition

生物标志(生物迹象):指能够表明过去或现在存在生命活动的可观测证据或特征,常用于天体生物学与行星科学中(例如某些气体成分、同位素比例、特定有机分子、矿物结构或微观化石等)。

发音 Pronunciation (IPA)

/baosntr/

例句 Examples

Scientists search for a biosignature on Mars.
科学家在火星上寻找生物标志(生命迹象)。

A simultaneous detection of oxygen and methane in an exoplanet’s atmosphere could be considered a potential biosignature, though false positives must be ruled out.
如果在系外行星大气中同时探测到氧气和甲烷,可能被视为潜在的生物标志,但必须排除“假阳性”的可能。

词源 Etymology

由 **bio-**(“生命、生物”,源自希腊语 bios “生命”)+ signature(“签名、特征标记”)组成,字面意思是“生命的特征标记”。该词在现代科学语境中常用于描述“可指示生命存在的证据”。

相关词 Related Words

文学与著名作品 Literary & Notable Works

  • The Eerie Silence(Paul Davies):讨论寻找外星生命的思路,涉及对“生命迹象/生物标志”的科学判断。
  • Astrobiology: A Very Short Introduction(David C. Catling):以通俗方式介绍天体生物学,包括生物标志与可居住性等核心概念。
  • NASA 与学术界关于系外行星观测的综述/白皮书(如讨论大气成分与“biosignature gases”的报告与论文):常以 “biosignature” 作为关键词来界定可观测的生命迹象与误判风险。
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