The document summarizes different types of stars and galaxies. It describes the life cycle of stars from their birth as protostars to their death as white dwarfs or black holes. It also discusses specific types of stars like red dwarfs, yellow stars, blue giants, giant stars, and super giant stars. Finally, it provides descriptions of different categories of galaxies like spiral, lenticular, elliptical, and irregular galaxies.
![Stars ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)