Science | Space | The Solar System

In the Solar System Channel, you can explore the planets and celestial objects around our own sun. Learn about topics such as Mars, Jupiter and the Moon.

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The Solar System Explained

Our planet Earth is part of a solar system that consists of nine (and possibly ten) planets orbiting a giant, fiery star we call the sun. For thousands of years, astronomers studying the solar system have noticed that these planets march across the sky in a predictable way.


If nature abhors a vacuum, then why doesn't the vacuum of space suck away all of the Earth's atmosphere?

If "nature abhors a vacuum," then why doesn't the vacuum of space suck away all of the Earth's atmosphere? See more »

Can the curvature of the Earth only be seen from outer space?

Can the curvature of the Earth only be seen from outer space? See more »