Solar System — Introduction

The Solar System consists of the Sun and all celestial bodies that orbit it — planets, moons, asteroids, comets, and dwarf planets.

• ›The Sun contains 99.86% of the Solar System's total mass.
• ›The Solar System is located in the Milky Way galaxy, in the Orion Arm.
• ›Age of the Solar System: approximately 4.6 billion years.
• ›The force keeping planets in orbit: Gravity (Newton's Law of Gravitation).

This chapter frequently appears in BPSC TRE-4 General Knowledge / Science sections.