These Photographic slides contain some astronomical events of planetary nebula named NGC 2346 and NGC 6894 in Cygnus and the solar system and 10 billion years life cycle of our Sun. These slides look like negative photographs.

This item was about the discovery that was made by the Nobel physicists S Chandrasekhar and William A. Flower. It outlines the award was presented to Subrahmanyan Chandrasekhar and Flower for their distinguished work in astrophysics. The research involved the theoretical studies of the physical processes important to the structure and evolution of the stars by S Chandrashekar and the theoretical and experimental studies of the nuclear reactions of matter in the formation of chemical elements in the universe by William A. Flower. The prize was shared equally between the two of them. The article also mentions that the announcement of the award was made on S Chandrashekar's birthday, which is considered as a birthday gift to him for his Nobel work.