The crop circle mystery
Crop circles are geometric figures (also called "pictograms") formed by the uniform flattening of cereal plants in rural areas, perfectly distinguishable from... continue reading
From close encounters, to intelligent life forms, to alleged abductions: the question of the existence of other worlds as habitable places or inhabited by other forms of life and of possible contacts with humanity has been debated for a long time starting from the 17th century until to get to the present day.