The three stigmata of Palmer Eldritch are marks or signs that are believed to have been created by palmer eldritch, an alien from outer space. This alien is believed to have visited Earth in the late 1950s and left behind these marks. They have come to symbolize his visit and they are symbols of his power. The three stigmata are the Concentric Circles, the Three Stars, and the Sign of the Blind. The Concentric Circles are three circles that are usually arranged in a triangle shape. The Three Stars look like three points and they point to a center. The Sign of the Blind looks like a three-leaf clover and is said to be the symbol of the alien. Together, these three symbols represent Palmer Eldritch and his visit to Earth.