第9章 我们所不知道的生命
Natalie Grefenstette1,2, Luoth Chou3,4, Stephanie Colón-Santos5
1Santa Fe Institute, Santa Fe, New Mexico, USA.
Astrobiology
|March 18, 2024
概括
科学家们正在扩大对地球外生命的搜索范围,超越类似地球生物学的范围. 这涉及开发不可知生物标记检测方法,以寻找具有未知的化学成分的异国生命形式,可能在其他行星或卫星上.
科学领域:
- 天体生物学 天体生物学
- 外生态学 外生态学
- 行星科学 行星科学
背景情况:
- 地球是唯一已知的有生命存在的行星.
- 寻找外星生命的研究往往依赖于地球特有的生物特征.
- 天体生物学认识到需要更具包容性的生命检测策略.
研究的目的:
- 探索从根本上不同于地球生命的潜力.
- 在寻找外星生命的过程中,超越地球特有的生物特征.
- 开发和应用不可知生物标记检测方法.
主要方法:
- 设想生命在组成,生活方式,媒介和形式方面的潜在多样性.
- 探索各种环境中生命系统的普遍原则.
- 开发对无神论生物标记检测的新视角.
主要成果:
- 确定了太阳系内外来生命的潜在息地 (例如,火星,金星,欧罗巴,恒星).
- 考虑了地球上一个影子生物圈的可能性.
- 强调了生物标记检测的更广泛,更具包容性的方法的出现.
结论:
- 寻找生命应该包括在地球化学之外的更广泛的可能性.
- 无神论生物标志对于检测具有未知的生物化学的生命至关重要.
- 未来的天体生物学研究必须采用包容性策略,以最大限度地发挥发现潜力.
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