Lithopanspermia is a theory proposing a natural exchange of organisms between solar system bodies as a result of asteroidal or cometary impactors. Research has examined not only the physics of the stages themselves but also the survival probabilities for life in each stage. However, although life is the primary factor of interest in lithopanspermia, this life is mainly treated as a passive cargo. Life, however, does not merely passively receive an onslaught of stress from surroundings; instead, it reacts. Thus, planetary ejection, interplanetary transport, and planetary entry are only the first three factors in the equation. The other factors are the quality, quantity, and evolutionary strategy of the transported organisms. Thus, a reduction in organism quantity in stage 1 might increase organism quality towards a second stress challenge in stage 3. Thus, robustness towards a stressor might in fact be higher in the bacterial population surviving after transport in stage 3 than at the beginning in stage 1. Therefore, the stages of lithopanspermia can themselves facilitate evolutionary processes that enhance the ability of the collected organisms to survive stresses such as pressure and heat shock. Thus, the multiple abiotic pressures that the population encounters through the three stages can potentially lead to very robust bacteria with survival capacities considerably higher than might otherwise be expected. This analysis details an outcome that is possible but probably rare. However, in addition to lithopanspermia, spacecraft mediated panspermia may also exist. The analogous stages in a spacecraft would result in a greater likelihood of increasing the stress tolerance of hitchhiking organisms. Furthermore, missions seeking life elsewhere will frequently be sent to places where the possibility of life as we know it is assumed to exist. Thus, we not only can transport terrestrial organisms to places where they are potentially more likely to survive but also may increase their invasive potential along the way. This analysis highlights further requirements that planetary protection protocols must implement and also provides a framework for analyses of ecological scenarios regarding the transmission of life, natural or artificial, between worlds in a solar system.

Lithopanspermia 是一种理论，提出太阳系天体之间由于小行星或彗星撞击而自然交换有机体。研究不仅检查了各个阶段本身的物理特性，还检查了每个阶段生命的生存概率。然而，虽然生命是石质精子症的主要关注因素，但这种生命主要被视为一种被动货物。然而，生活不仅仅是被动地接受来自周围环境的压力冲击；相反，它会做出反应。因此，行星抛射、行星际运输和行星进入只是等式中的前三个因素。其他因素是运输生物的质量、数量和进化策略。因此，阶段 1 中生物体数量的减少可能会提高生物体质量，以应对阶段 3 中的第二次压力挑战。因此，实际上，在阶段 3 运输后存活的细菌种群中，对压力源的稳健性可能比阶段 1 开始时更高。因此，石质精子的各个阶段本身可以促进进化过程，从而增强收集到的生物体在压力和热休克等压力下生存的能力。因此，人口在三个阶段遇到的多种非生物压力可能会导致非常健壮的细菌，其生存能力远高于预期。该分析详细说明了可能但可能罕见的结果。然而，除了石精症外，航天器介导的泛精症也可能存在。航天器中的类似阶段将导致增加搭便车生物的压力耐受性的可能性更大。此外，在别处寻求生命的任务经常会被派往我们所知道的可能存在生命的地方。因此，我们不仅可以将陆地生物运送到它们更有可能生存的地方，而且还可以在此过程中增加它们的入侵潜力。该分析强调了行星保护协议必须实施的进一步要求，并提供了一个框架，用于分析有关太阳系中世界之间自然或人工生命传输的生态场景。在别处寻求生命的任务经常会被派往我们所知道的可能存在生命的地方。因此，我们不仅可以将陆地生物运送到它们更有可能生存的地方，而且还可以在此过程中增加它们的入侵潜力。该分析强调了行星保护协议必须实施的进一步要求，并提供了一个框架，用于分析有关太阳系中世界之间自然或人工生命传输的生态场景。在别处寻求生命的任务经常会被派往我们所知道的可能存在生命的地方。因此，我们不仅可以将陆地生物运送到它们更有可能生存的地方，而且还可以在此过程中增加它们的入侵潜力。该分析强调了行星保护协议必须实施的进一步要求，并提供了一个框架，用于分析有关太阳系中世界之间自然或人工生命传输的生态场景。我们不仅可以将陆地生物运送到它们更有可能生存的地方，而且还可以在此过程中增加它们的入侵潜力。该分析强调了行星保护协议必须实施的进一步要求，并提供了一个框架，用于分析有关太阳系中世界之间自然或人工生命传输的生态场景。我们不仅可以将陆地生物运送到它们更有可能生存的地方，而且还可以在此过程中增加它们的入侵潜力。该分析强调了行星保护协议必须实施的进一步要求，并提供了一个框架，用于分析有关太阳系中世界之间自然或人工生命传输的生态场景。