A famous example of pareidolia is the Face on Mars from the Viking 1 mission. Even NASA saw it, releasing an initial version of the image with this caption in 1976: “… huge rock formation … which resembles a human head … formed by shadows giving the illusion of eyes, nose and mouth.” Image: NASA

Why Do We See Faces That Aren’t Real?

Jesus appears on a piece of toast. A freaky face pops out of a swirly pattern on floor tile. And of course, all kinds of cute and scary creatures hover in the clouds.