SIRIUS is an astronomy association from Constantine, Algeria, devoted in promoting astronomy and science with the public. It is perhaps the largest such association in Algeria and North Africa. It is engaged in a wide range of outreach activities with one of its main component being the the Constantine Cosmos Caravan (CCC) with at its centerpiece a portable planetarium. It is also organizing the yearly National Festival in Popular Astronomy which is the largest gathering of astronomy amateurs in Algeria and perhaps in Africa with attendance of people from all over the region and the World: http://siriusalgeria.net/salon019.htm.