Astrobiologist Dirk Schulze-Makuch, from the Technische Universität Berlin in Germany, believes that humans may have unintentionally killed life on Mars in the 1970s.NASA’s Viking 1 mission in 1976 saw two spacecraft land on the Red Planet’s surface and conduct an experiment involving mixing water and nutrients with collected soil samples. The assumption at the time was that life on Mars would behave the same way as it does on Earth, relying on liquid water to survive.As Space.com reports, early results gave researchers a tantalizing hint at the possibility of life on…
