在地球上寻找古代生命的部分经验为在火星上寻找生物特征提供了信息。研究人员依靠保存在岩石记录中的微妙线索来解决诸如微生物生命在地球上出现多久之前的问题。我们在具有高保存潜力的环境中寻找这些证据，例如陨石坑和湖床，这意味着那些可能保存生物特征的地方。

NASA announced that a rock sample collected by the Perseverance rover last year from an ancient dry riverbed near Jezero Crater on Mars may hold evidence of ancient microbial life. The sample, named " ...

"This finding by Perseverance ... is the closest we have ever come to discovering life on Mars. The identification of a potential biosignature on the Red Planet is a groundbreaking discovery, and one ...