Back in the 1960s, when Viking's experiments were being designed, some scientists suggested that finding methane would in itself be strong evidence of life.
Back in the 1960s, when Viking's experiments were being designed, some scientists suggested that finding methane would in itself be strong evidence of life.
早在60年代，当“海盗”火星探测计划还处于筹划阶段时，就有科学家提出发现甲烷本身就是生命存在的有利证据。