Introduction For many years, students around the world learned that our Solar System has nine planets, with Pluto as the smallest and farthest one. But in 2006, the International Astronomical Union (IAU) made a historic decision: Pluto is no longer…
1. Introduction: What is the Kuiper Belt? Have you ever wondered what lies beyond Neptune, the last of the eight planets in our Solar System? Scientists discovered that this region is not empty. It is filled with icy worlds, dwarf…
1. Introduction: What is the Solar System? The Solar System is our home in space. It is a large system of the Sun and everything that moves around it. This includes: Everything is connected through the Sun’s gravity. Just like…
Introduction: The Amazing Star at the Center of Our Solar System The Sun is the heart of our solar system. It gives us light, heat, and life. Every day it rises in the sky, but how much do we really…