Buzz Aldrin and the flag at Tranquility Base, Apollo 11

Apollo 11, July 20, 1969. Armstrong photographed Aldrin beside the flag they had just planted, with Eagle's leg at the left edge and their tracks churned into the foreground. The ripple that conspiracy theorists love comes from a horizontal rod sewn into the top hem to hold the flag out in the airless dark; the crew could not extend it fully, and the creases stayed. Eagle's exhaust knocked this flag over when the ascent stage lifted off.