We advocate an integrative approach between laboratory experiments in prebiotic chemistry and geologic, geochemical, and astrophysical observations to help assemble a robust chemical pathway to life that can be reproduced in the laboratory. The cyanosulfidic chemistry scenario described here was developed by such an integrative iterative process. We discuss how it maps onto evolving planetary surface environments on early Earth and Mars and the value of comparative planetary evolution. The results indicate that Mars can offer direct evidence for geochemical conditions similar to prebiotic Earth, whose early record has been erased. The Jezero crater is now the chosen landing site for NASA’s Mars 2020 rover, making this an extraordinary opportunity for a breakthrough in understanding life’s origins.
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机译：我们倡导在益生元化学和地质，地球化学和天体物理观测中实验室实验之间的综合方法，以帮助组装能够在实验室中再现的生命的鲁棒化学途径。这里描述的氰基硫化物化学场景是由这种整合迭代过程开发的。我们讨论如何在早期地球和火星上映射到不断发展的行星表面环境以及比较行星演化的价值。结果表明，火星可以为类似益生元地球的地球化学条件提供直接证据，其早期记录已被删除。 Jezero Crater现在是NASA的Mars 2020 Rover所选择的着陆位点，这使得这是一个非凡的机会，以了解生活起源的突破。
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