IS this evidence of alien contact? UFO aficionados are in a spin after NASA appeared to suggest ancient rock art may have been planted by aliens.The NASA e-book titled Archaeology, Anthroology, and Interstellar Communication, which was issued earlier this week, details efforts in the hunt for extraterrestrial life. It has since been taken down without explanation.
NASA pulls e-book which appeared to suggest aliens may have left messages among ancient rock art | News.com.au
