The IAA RAS . ... Dissertation council . ... International collaboration . ... The Institute of Applied Astronomy of the Russian Academy of Sciences. The Institute of Applied Astronomy of the Russian Academy of Sciences (IAA RAS) is one of the world's largest astronomical institutions. ... In addition to the wide range of research carried out, the IAA RAS publishes Russian and international yearbooks and almanacs, containing the ephemerides of the Sun, Moon, large and small planets, and stars. ...