No way in hell was everything we dropped on Mars 100% sterilized: https://en.wikipedia.org/wiki/List_of_artificial_objects_on_Mars https://en.wikipedia.org/wiki

No way in hell was everything we dropped on Mars 100% sterilized: https://en.wikipedia.org/wiki/List_of_artificial_objects_on_Mars https://en.wikipedia.org/wiki/List_of_artificial_objects_on_... Also I really don't get this fixation to "not contaminating Mars" - like, why ? Its one of the few usable planets in the Solar System! Of course we will contaminate it all over with life, possibly turn it terrestrial one way or another. Anyone advocating against using one of the most important next stepping stones for Humanity must really live in a weird bubble. Sure, pick some Kuiper belt object or some extrasolar planet and declare it a reserve and we will make sure we won't touch it when we get there. But doing the same with Mars is insane and almost seems like some weird irrational religion.