By birth we see stars twinkling in the sky. Every child has the question "what is it?". In ancient times when person who have the knowledge and they discuss these matters were sages or rishis. They named it Brahhamand. They raised several questions about the origin of the universe which are not yet answered.
Nasadiya Sukta from Rig Ved has the question in it and these led to the topic of COSMOLOGY for research purpose of this universe.
