The big picture first
This page gives the reader one calm overview before the individual pages. The Solar System includes the Sun, the planets, moons, and many smaller objects. Here you can start with the main pattern: one star in the middle and many worlds moving around it.
The Solar System is easier to understand when you first look at the whole set together.
The Solar System is the family of objects held together by the Sun’s gravity. The Sun sits at the center. Around it move the planets, dwarf planets, moons, asteroids, comets, dust, and many smaller bodies. When readers start here, the later planet pages make more sense because every world already has a place in the bigger picture.
This page helps when space feels too large or too complicated at first. You do not need to jump straight into details. You can first understand the shape of the whole system, then open the pages about the planets one by one.
Open the world you want, or simply move from the Sun outward.
Star at the center of the Solar System
The Sun is the star at the center of the Solar System. It gives Earth light and heat, and its gravity keeps the planets moving around it.
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Closest planet to the Sun
Mercury is the closest planet to the Sun. It is small, rocky, and covered with many impact marks from long ago.
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Hot rocky planet
Venus is the second planet from the Sun. It is close to Earth in size, but its surface is far hotter because a thick atmosphere traps heat.
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Home planet
Earth is the third planet from the Sun and the home of people, animals, and plants. It has liquid water, a protective atmosphere, and many different environments.
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Earth’s natural satellite
The Moon moves around Earth and reflects sunlight. It does not make its own light, but it can look very bright in the night sky.
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Red rocky planet
Mars is the fourth planet from the Sun. It is often called the Red Planet because iron-rich dust gives it a reddish color.
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Largest planet
Jupiter is the fifth planet from the Sun and the largest planet in the Solar System. It is a giant world made mostly of hydrogen and helium.
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Ringed giant planet
Saturn is the sixth planet from the Sun. It is best known for its bright ring system, but it is also a very large world with many moons.
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Blue-green ice giant
Uranus is the seventh planet from the Sun. It is often called an ice giant because it contains icy materials in addition to gas.
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Distant ice giant
Neptune is the eighth major planet from the Sun. It is a dark blue ice giant far from the Sun and known for powerful winds.
Open pageRead why the Sun is the center of the system and why its gravity and energy matter so much.
Use the familiar worlds to understand atmosphere, water, reflection of sunlight, and orbital motion.
Move outward to the largest worlds and notice how different they are from the rocky planets.
After the Solar System, the star pages help you see how our Sun fits into a larger universe.