This solar system trivia quiz for kids has 45 multiple-choice questions covering planets, moons, the Sun, space exploration, and some of the more surprising facts about our solar system.

There are three difficulty levels for upper elementary, middle school, and high school students, so everyone can have a go. It’s completely free to play online, with no sign-up or printing needed.

What Does the Solar System Quiz Cover?

The questions explore different parts of astronomy and space science, including:

• Planets: The eight planets, their characteristics, atmospheres, and how they differ from one another.
• Moons and the Sun: Natural satellites, our closest star, and how these objects affect the solar system.
• Asteroids and comets: Smaller objects traveling through space and what makes them different.
• Space exploration: Astronauts, spacecraft, and some of the discoveries we’ve made beyond Earth.
• Astronomy facts: Orbits, gravity, and other fascinating features of our solar system and beyond.

Some questions test basic planet facts, while others require a little more understanding of how things work in space.

How to Use This Space Trivia Quiz

We’ve always enjoyed a good trivia challenge, and space is one of those subjects where there’s nearly always something new to learn.

Teachers can use this quiz after a solar system lesson, as a quick science review, or as an activity for early finishers.

It’s also a fun way to find out what kids already know before starting an astronomy unit. You might be surprised how much they’ve picked up about planets, astronauts, and space exploration.

More Space and Science Quizzes

If you enjoyed testing your space knowledge, try our other online trivia games, covering weather, geography, the human body, and life cycles.

Free Solar System Printables and Activities

Want to explore the planets in more detail? Our free solar system worksheets include planet activities, matching games, and science printables to help kids learn more about space.

You can also explore moon phases, practice planet vocabulary with word searches, or get creative with astronaut-themed activities.

These resources work particularly well alongside the quiz, whether you’re planning a classroom astronomy lesson or exploring space at home.

More Science Games and Generators

Looking for another activity? Try our free crossword puzzle maker or word search generator to create your own science vocabulary challenges using planets, moons, and space-related words.