Complex sentence: Ayyub Salah oglu Guliyev is an Azerbaijani astrophysicist, expert on comets, doctor of physical and mathematical sciences, professor, corresponding member of ANAS and a director of the Shamakhi Astrophysical Observatory.
Split into simpler sentences: Ayyub Salah oglu Guliyev is an Azerbaijani astrophysicist, working on comets. He is a doctor of physical and mathematical sciences, professor, corresponding member of ANAS and a director of the Shamakhi Astrophysical Observatory.