Life appeared really quickly on Earth as soon as there were oceans so I'm pretty bullish on the idea that there were microbes on Mars at one point. https://en.

Life appeared really quickly on Earth as soon as there were oceans so I'm pretty bullish on the idea that there were microbes on Mars at one point. https://en.wikipedia.org/wiki/Timeline_of_the_evolutionary_history_of_life https://en.wikipedia.org/wiki/Timeline_of_the_evolutionary_h...