with support of many prominent scientists, most of the scientists "signers" careers (not fully) recovered, and even though, following defense, Fridman's Doctor of Science dissertation spent over two years "waiting" to be considered for the approval of the Highest Attestation committee, the degree was finally awarded to him in 1972. In 1971 he was offered the opportunity to create a laboratory of plasma physics in SibIZMIR (now Institute of Solar-Terrestrial Physics) Irkutsk, and he moved there with Valerij Polyachenko, Ilia Shukhman, and Alexander Morozov. Education 1963 – M.S., Novosibirsk State University 1966 – Ph.D., Novosibirsk State University, "Selected questions in theory of stability of nonuniform plasma in magnetic field". 1972 – Doctor of Sc., "Theory of gravitating ionised phase". Positions 1966–1969 – junior scientist, Institute of Nuclear Physics, Novosibirsk 1969–1971 – senior scientist, Institute of Nuclear Physics, Novosibirsk; assistant professor, Novosibirsk State University 1971–1979 Head of laboratory, IZMIRAN, Irkutsk; department head, Irkutsk State University 1979–1985 Senior scientist, Astronomical Council of the Academy of Sciences USSR; professor, Moscow Institute of Physics and Technology 1986–2010 Professor, Head of the Department of Physics of Stellar and Planetary Systems, Institute of Astronomy of the Russian Academy of Sciences; professor, Moscow State University 2005–2010 Head of the Institute of Physics of Stochastic Structures, Kurchatov Research Center (Moscow) 2007–2010 Visiting Professor, Tel Aviv University Memberships 1994 Elected corresponding member of the Russian Academy of Sciences, RAS 2000 Full member of RAS 1991–2010 Member of the Organizing committee of IAU Doctoral students Among Fridman's doctoral students, 10 received a Doctor of Science degree, and 26 a Ph. D. degree. Alexander Morozov, D. of Sci., Valery Polyachenko, D. of Sci., Ilia Shukhman, D. of Sci., Nikolai Gor'kavyi, D. of Sci. Discoveries 1975—1995 discovered new types of instabilities in gravitating media. 1971—1985 created the theory of planet rings and predicted Uranus satellites that were later discovered. 1972—1996 created hydrodynamic theory of the spiral structure in galaxies. Overview of the scientific contribution In plasma physics, Fridman predicted the existence of the Alfven's solutions, and worked out the stability theory of thermonuclear plasma at finite high pressure. In hydrodynamics, developed the theory of the three strongest instabilities of hydrodynamics: tangential discontinuity, centrifugal, and over-reflection instability. In space physics: with his students, developed the linear theory of stability of classical figures of equilibrium in collisionless stellar systems, and laid the foundations of the nonlinear theory of stability and turbulence of gravitating media.