When the Viking 1 lander send down twin landers to study Mars in 1976, the results returned a negative result for the possibility of microbial life. However, for years, scientists have argued that the Viking's experimental techniques might’ve killed hygroscopic microbes living on Mars with too much water.

Astrobiologist Dirk Schulze-Makuch from the Technische Universität Berlin in Germany believes that humans may have unintentionally killed all life on Mars in the 1970s. NASA's Viking 1 mission in 1975 saw two spacecraft land on the Red Planet's surface and conduct an experiment involving mixing water and nutrients with collected soil samples.

The rover stumbled upon a zebra-striped rock that is unique against the red surroundings of the planet. This rock is about 7.8 inches in width and was found in the Jezero Crater,

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