关于在金星上存在无碳异聚合物的可能性:一项计算天体生物学研究
Ishaan Madan1,2, Shekoufeh Arabi Aliabadi1, Johanna Huhtasaari1
1Department of Chemistry and Chemical Engineering, Chalmers University of Technology, Gothenburg, Sweden.
QRB discovery
|October 29, 2025
概括
天体生物学家推测,基于硫和的聚合物可能在金星的云层中形成. 计算机建模表明这些无碳异聚合物是稳定的,为外星生命提供了潜在的替代生物化学.
科学领域:
- 天体生物学 天体生物学
- 计算化学的计算化学
- 行星科学 行星科学
背景情况:
- 寻找外星生命的研究往往侧重于基于碳的生物化学.
- 金星的酸性云提供了一个独特的,尽管具有挑战性的环境,为潜在的生命.
- 计算天体生物学提供了新的方法来探索假设的生物化学.
研究的目的:
- 为了研究在金星大气中无碳异聚合物形成的可行性.
- 评估这些假设的聚合物的热力学稳定性和运动性持久性.
- 挑战传统的以碳为中心的生命模型,以替代的生化可能性.
主要方法:
- 利用量子化学方法来建模假设的聚合物.
- 评估了用R替代的多硫酸硫乙烯聚合物的热力学优势性和动力稳定性.
- 建议振动光谱学和质谱学用于潜在检测.
主要成果:
- 模拟的聚合物展示了热力学上有利的形成路径.
- 这些聚合物表现出足够的动力稳定性,可以在金星云中持续存在.
- 在非生物条件下,热力学稳定性与多类相比或优于多类.
结论:
- 基于硫和的异聚合物是金星大气层的合理组成部分.
- 这些发现支持了除了基于碳的生命之外的替代生物化学的可能性.
- 需要进一步的研究和适应任务能力来检测这些化合物.
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