1977, Graduated Yerevan State University; Chair of Theoretical Physics;
1977-1980, Postgraduate Student, Theoretical Department, Lebedev Physics Institute, Moscow;
1980 - Research Fellow (Leading Fellow - 1989), Theoretical Department, Yerevan Physics Institute, Yerevan; head of Cosmology Unit,
2000 - Visiting Professor, University of Rome "La Sapienza"; research fellow ICRA.
Chaos in Astrophysical and Cosmological Problems,
Stellar Dynamics, Quantum Cosmology,
CMB and Large Scale Structure of the Universe.
Four books and over 100 papers;
International organizational activity:
Chair of International Scientific Organizing Committee of workshop "Ergodic Concepts in Stellar Dynamics", Geneva, 1993;
Chair of Local Organizing Committee of workshops "The Chaotic Universe", Rome, 1999; "Fermi and Astrophysics" dedicated to 100th birthday of E.Fermi, Rome, Pescara, 2001; of IX Marcel Grossmann meeting, Rome 2000
Chair of 'Chaos' Parallel session at VIII and IX Marcel Grossmann Meetings, Jerusalem, 1997, Rome, 2000;
Member EUROSCIENCE Governing Board (elected 1998, reelected 2002).
Co-editor of Intern.Journ.Modern Phys D (World Scientific) and of book series 'Advances in Astronomy and Astrophysics' (Taylor & Francis, UK).
Fellow of Royal Astronomical Society (UK)