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6) What do you understand by expanding universe hypothesis? How did Big Bang result in the formation of galaxies and stars?(250 words)

Are you Ready for Insta 75 Days Revision Plan (UPSC Prelims - 2020)?

Topic – Part of static series under the heading – “Universe and Solar System”

6) What do you understand by expanding universe hypothesis? How did Big Bang result in the formation of galaxies and stars?(250 words)

NCERT Physical Geography class XI – Pg 14&15

Key demand of the question

The question expects us to explain our understanding of Big Bang theory and how the universe came into being. Thereafter, it expects us to explain how galaxies and stars came into being

Structure of the answer

Introduction – Explain that after long debates and multiple theories, scientists have come to believe that universe as we know today was formed 13.6 billion years ago as a result of Big Bang Theory

Body – Explain what Big Bang Theory is and how it resulted into the creation of universe as we know today. Thereafter, discuss how galaxies and stars came into being