论文标题
金星生命方程式
The Venus Life Equation
论文作者
论文摘要
古代金星和地球可能以关键的方式与生命的发展相似，例如液态水海洋，陆地界面，有利的化学成分和能量途径。如果生活从其他地方发展起来，或者被转移到早期的金星，那么它可能会蓬勃发展，扩大并幸存下来，并在今天在金星上导致荒凉的表面变化。金星云层可以为现存的寿命提供避难所，该寿命持续到更早的宜居表面环境中。我们介绍了金星生命方程式 - 一种理论和基于证据的方法，使用三个主要因素，使用三个主要因素来计算维纳斯，L = o x r x r x r x C的三个主要因素。我们使用对目前的Archaean到现在的地球环境条件的当前理解来评估这些因素。我们发现，金星上生命的起源的可能性将与地球的概率相似，并认为其他因素应非零，与太阳系中其他有希望的天体生物学目标相当。金星寿命方程式还确定了维纳斯的知识较低的各个方面，可以通过直接观察未来的探索任务来解决。
Ancient Venus and Earth may have been similar in crucial ways for the development of life, such as liquid water oceans, land-ocean interfaces, favorable chemical ingredients and energy pathways. If life ever developed on, or was transported to, early Venus from elsewhere, it might have thrived, expanded and then survived the changes that have led to an inhospitable surface on Venus today. The Venus cloud layer may provide a refugium for extant life that persisted from an earlier more habitable surface environment. We introduce the Venus Life Equation - a theory and evidence-based approach to calculate the probability of extant life on Venus, L, using three primary factors of life: Origination, Robustness, and Continuity, or L = O x R x C. We evaluate each of these factors using our current understanding of Earth and Venus environmental conditions from the Archaean to the present. We find that the probability of origination of life on Venus would be similar to that of the Earth and argue that the other factors should be nonzero, comparable to other promising astrobiological targets in the solar system. The Venus Life Equation also identifies poorly understood aspects of Venus that can be addressed by direct observations with future exploration missions.
