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Introduction to the Solar System

The Eight Planets

Terrestrial Planets

Jovian Planets

Small Bodies and Outer Reach

The Asteroid Belt

The Kuiper Belt

The Oort Cloud

🎮 Pixel Quest: Solar System Journey

Conclusion

Quiz

Quiz: Introduction

Quiz: Terrestrial Planets

Quiz: Jovian Planets

Quiz: The Asteroid Belt

Quiz: Outer Regions

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Course Feedback

Explore the wonders of our cosmic neighborhood in Exploring Our Solar System: Planets and Major Regions. This engaging, beginner-friendly course guides you from the blazing heart of the Sun to the mysterious edge of the Oort Cloud. You’ll discover how our Solar System is situated in the Milky Way’s Orion Spur, why the Sun’s gravity holds everything together, and how distance, size, and composition shape the diverse worlds we observe. Dive into the rocky terrestrial planets—Mercury, Venus, Earth, and Mars—to compare surfaces, atmospheres, and habitability, then journey outward to the majestic Jovian planets—Jupiter, Saturn, Uranus, and Neptune—where rings, storms, and dozens of moons redefine what a planet can be. Beyond the planets, you’ll map the Asteroid Belt, meet the icy residents of the Kuiper Belt (including Pluto), and grasp the vast scale of the theoretical Oort Cloud, birthplace of long-period comets. Through crisp explanations, visual references, and quick knowledge checks, you’ll learn the order of the planets, key features that distinguish each region, and how scientists categorize small bodies. Whether you’re a student, teacher, or space enthusiast, this course builds a solid foundation in planetary science, equips you with memorable mental models, and leaves you with a clear, big-picture understanding of our Solar System’s structure, components, and boundaries.

Exploring Our Solar System: Planets and Major Regions

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            <p>The Solar System is a vast and complex neighborhood located within the Orion Spur of the Milky Way galaxy. At its heart lies the Sun, a massive star that serves as the central gravitational anchor, holding everything from the largest planets to the smallest grains of dust in its orbit. This system is structured into distinct zones, beginning with the inner rocky worlds and extending far into the icy reaches of the outer regions. Understanding the scale and basic architecture of this planetary system provides a foundation for exploring the unique characteristics of the celestial bodies that call it home.</p>

<p>Throughout this exploration, we will examine the eight major planets, categorized into the rocky terrestrial planets like Earth and Mars, and the massive Jovian giants, which include both gas and ice giants. Beyond the planetary orbits, the journey continues through the Asteroid Belt—the boundary between the inner and outer system—and into the mysterious Trans-Neptunian regions. From the icy bodies of the Kuiper Belt, where Pluto resides, to the theoretical outer shell known as the Oort Cloud, this course offers a comprehensive look at the diverse environments and gravitational boundaries that define our corner of the universe.</p>
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