Ishikawa Y
Obayashi Corporation, Tokyo, Japan.
Biol Sci Space. 1997 Mar;11(1):3-12. doi: 10.2187/bss.11.3.
Five conditions for life to arise are discussed with referring to early Martian environment. The key to determine whether any life form appeared on Mars is found to be the early Martian carbon dioxide atmospheric pressure and then the temperature. The importance to determine the heat flow is indicated. The items to be measured for future Martian exploration are listed. The surface materials, which has been poorly understood, are emphasized for further exploration. Two strategies for search for life on Mars, "step by step" strategy and quick strategy, are suggested.
结合早期火星环境讨论了生命出现的五个条件。发现确定火星上是否出现任何生命形式的关键在于早期火星的二氧化碳大气压力，其次是温度。指出了确定热流的重要性。列出了未来火星探索需测量的项目。强调了对了解甚少的地表物质进行进一步探索。提出了在火星上寻找生命的两种策略，即“循序渐进”策略和快速策略。
