Why is it Impossible for Humans to Reach Mars | Brian Greene
Mars is not simply a cold desert waiting to be colonized. The real barrier is biological physics. This video breaks down the hard scientific truth behind why human survival on Mars remains physically impossible, from the gravitational mechanics that dissolve bone density and muscle mass, to the perchlorate saturated soil that chemically destroys thyroid function, to the thermodynamic trap of closed habitat systems that slowly accumulate lethal toxins. The laws of physics have written a biological quarantine into the Martian environment itself. No rocket, no habitat, and no amount of engineering ambition can override the foundational laws of gravity, chemistry, and thermodynamics. If you think Mars colonization is simply a matter of better technology, this video will permanently change how you see the red planet.
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