This quiz covers the most fascinating things to know about Pluto — its discovery, its moons, its weird orbit, its heart of ice, and a few surprises you might not have heard before. Each question has four options and only one is right. After each answer you'll see why — so even if you miss one, you've learned something. Good luck, explorer.
Use the interactive quiz below to test your Pluto knowledge. Your score updates after every answer.
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The Pluto Scoring Bands
- Pluto Beginner (under 5 / 10) — You're just getting started. Try the quiz again after reading a few more pages.
- Pluto Learner (5–6 / 10) — Solid foundation. You've got the basics down.
- Pluto Explorer (7–8 / 10) — Excellent. You really know your Pluto facts.
- Pluto Expert (9–10 / 10) — Honestly impressive. You know Pluto better than most adults.
Stuck on a Question?
Every question on this quiz is covered somewhere in the Pluto hub. If you want to go and study before trying again, here is where to look:
- Questions about discovery and names → Who Discovered Pluto?
- Questions about Pluto's status as a dwarf planet → Why Isn't Pluto a Planet?
- Questions about Pluto's heart, surface, mountains and ice volcanoes → Pluto's Surface
- Questions about moons and the underworld names → Pluto's Five Moons
- Questions about the New Horizons mission → The New Horizons Mission
- Questions about size, gravity, weight, year length → Pluto vs Earth
- Questions about Pluto's atmosphere and blue sky → Pluto's Atmosphere
- Questions about the Kuiper Belt → The Kuiper Belt for Kids
Done with the quiz? Try the 20 Wow Facts for a quick highlight reel, or jump back to the main Pluto facts page.
Frequently Asked Questions
Is the Pluto quiz suitable for kids?
Yes — the Pluto quiz is designed for kids aged 8 to 12. Every question is in plain English, every wrong answer comes with a clear explanation, and the scoring bands (from Pluto Beginner to Pluto Expert) are encouraging rather than competitive.
How many questions are in the Pluto quiz?
There are 10 questions. The quiz covers Pluto's discovery, naming, size, moons, atmosphere, surface, orbit, and the New Horizons mission. You can retake it as many times as you want — the questions stay the same so you can try to beat your previous score.
What score do I need to be a Pluto Expert?
Score 9 or 10 out of 10 and you'll get the Pluto Expert badge — honestly impressive. The scoring bands are Pluto Beginner (under 5), Pluto Learner (5–6), Pluto Explorer (7–8), and Pluto Expert (9–10).
Where can I learn more before taking the quiz?
Every question in the quiz is covered somewhere on the Pluto hub. The pillar page (Pluto Facts for Kids) is the best starting point, and from there you can dive deeper into discovery, surface, moons, mission and orbit.
Does the quiz save my score?
The quiz doesn't save your score between sessions — it runs entirely in your browser. But the result page tells you which badge you've earned, and you can take the quiz again as many times as you like.