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The Solar System: Our Cosmic Neighborhood
The Solar System consists of the Sun and everything bound to it by gravity—the planets, their moons, asteroids, comets, and countless smaller objects. It formed approximately 4.6 billion years ago from the gravitational collapse of a giant molecular cloud.
Planetary Classification
The eight planets in our system are divided into two main groups based on their composition:
1. Inner (Terrestrial) Planets
These are the four innermost planets, characterized by being dense, rocky, and relatively small.
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