Scientists on Tuesday celebrated the birth centenary of eminent astrophysicist Subrahmanyan Chandrasekhar with special public lectures and film screenings on the 1983 Nobel laureate. Chandrasekhar, who won the coveted Nobel Prize for Physics for his study of the evolution of stars, was remembered across the country and plans have been drawn up to celebrate his centenary all through the year. Born on October 19, 1910, Chandrasekhar is regarded among the foremost astrophysicists of the 20th century as he was one of the first scientists to combine the study of physics with that of astronomy. Chandra, as he was popularly known, proved that there was an upper limit to the mass of a white dwarf, a dying star.