18. The Biological Male Symbol Has Been Derived From The Greek Symbol Of The Planet Mars
From ancient times, when all the oldest civilizations were at their peak, the planet Mars has always been associated with men and male virility. The biological symbol for the male sex, a circle with a small arrow protruding from it, is also the symbol for the planet Mars. The two components of the symbol are designed to represent the shield and spear of Mars, the Roman god of war.