Prince Sultan Bin Salman Bin Abdul Aziz, President of Saudi Commission for Tourism and Antiquities (SCTA) and Member of the Association of Space Explorers, will participate in the association's 5th Annual Congress due to start in Moscow Sunday. The congress will discuss a number of topics related to space science and technology and latest developments in the sphere of space exploration. In 1989, the Kingdom hosted the association's 4th Annual Congress. The association was founded in 1985. It has a membership of more than 350 astronauts from 35 countries.