By Sushil Godara
March 04, 2024
The Big Bang Theory is the prevailing cosmological model explaining the origin of the universe. It suggests the universe expanded from an extremely high-density and high-temperature state around 13.8 billion years ago.
Earth's motion involves rotation on its axis, completing one full turn approximately every 24 hours, causing day and night. It also revolves around the Sun, completing one orbit in about 365.25 days, leading to seasons.