Research Interests:

1. •Theoretical studies of comets, with emphasis on the structure,
   

    evolution  and activity of cometary nuclei, based on numerical 

    simulations

1. •The thermal evolution of planet Mars
   

1. •The structure and evolution of icy satellites
   

1. •Stellar evolution: the structure and evolution of single stars and cataclysmic variables
   

1. •Evolutionary simulations of Nova outbursts