The Skystone was discovered in 1990 by Angelo Pitoni, an archaeologist and geologist, in Sierra Leone, West Africa. Local legends stated that the stones were actually beings that once lived in the sky. Pitoni sent the stone for analysis to laboratories in Rome, Germany, Switzerland, and Tokyo. Researchers concluded that the stone was different from any other stone found on Earth, probably originating outside the planet.  Learn more about your ad choices. Visit megaphone.fm/adchoices