On August 15th, 1977, Jerry Ehman was working on a SETI project when he detected a 72-second long blast that crescendo-ed in a noise 30 times louder than the background. Jerry circled the text recording of this noise, commenting “Wow!” next to it in red pen, inadvertently naming the phenomenon. Nothing like it has been recorded since.
The Klerksdorp spheres
Strange round stones are being found in a mine in South Africa, they typically have 1 to 3 ridges around their circumference and predate the material surrounding them. Some say natural phenomena, out of place artifacts, or a sign that another form of intelligent life put them here.
Since the early 1980’s, linoleum tiles have been found embedded in asphalt all around the world. They bear the inscription “TOYNBEE IDEA, IN MOViE `2001,RESURRECT DEAD, ON PLANET JUPITER”. Their origins are unknown.