this post was submitted on 22 Jun 2025
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You have subscribed to red flag facts! ๐ฉ:
Did you know the color red is the rarest color to appear on every country flag on Mars? Because the planet is rich in the reddish iron oxide mineral ferrihydrite, it would be difficult to distinguish apart any jurisdictions under normal atmospheric conditions. This is why the US currently uses radio K-band frequencies and metallic debris for demarcation. And local terrestrials scream in the 700nm subharmonic range, which to humans appears approximately deep-red to the invisible infrared range... which is why we cannot see or hear them.