NASA keeps watching this giant ‘eye’ in the Sahara from space but it has a surprising earthly origin The Times of IndiaThe True Scale Of The Richat Structure Was Only Fully Appreciated When Humans Started Traveling Into Space IFLScienceNASA Images Reveal Geological Origins of Richat Structure in Mauritania AsatuNews.co.idWhat lies behind the Eye of the Sahara formation? NASA explains ARY NewsNASA observes the Sahara from the International Space Station and detects a gigantic eye nearly 50 kilometers wide, whose origin is not as cosmic as it seems ECOticias.com