‘The solar system consists of the sun and its nine planets.’ All of us read this statement in our schools in a chapter named ‘The Solar System’. And then, all of a sudden, in the year 2006, this became false when Pluto was demoted from ‘planethood’ and put under the category of dwarf planets.
What is the biggest thing you can think of? The universe? All right. Have you ever wondered what the origin of this vast universe was?