Five-pointed stars were drawn on Egyptian jars dating back to 3100 BCE and on tablets and vases in Mesopotamia around the same time. ... They were often seen in letters between the followers of Pythagorus (aka Pythagoreans) as a symbol of their group.

Where did the 5 pointed star come from?

In 1916, a five-pointed red star was used by the U.S. Army Signal Corps' aviation section. The American tradition of barnstars, decorative five-pointed stars attached to buildings, appears to have arisen in Pennsylvania after the Civil War, and became widespread by the 1930s.

Why is the star shape called a star?

In detail, our lenses are not very perfect, having subtle structural imperfections called suture lines. Light passes the imprint making those imperfections leave. So when light reaches our retina, it shows that it is star-shaped.