Outer Space Quiz: What Do You Know About the Planets in Our Solar System?

“I would like to die on Mars. Just not on impact." – Elon Musk

While Musk and Co. are trying to make that happen, let's get to know the planets in our solar system from a safe distance. There were once nine in the system until Pluto was demoted to a dwarf planet. Now, the remaining eight are still holding up, orbiting the Sun in their own time and with their own unique features. From Saturn's rings to Mercury's temperament, the solar system is full of fun facts and mysterious surprises.

Do you think you hold universal knowledge about the universe in your mindmap? Try your luck with our Planets Quiz!

Test your Science Knowledge

“Once you've been in space, you appreciate how small and fragile the Earth is." – Valentina Tereshkova

Valentina Tereshkova knows a thing or two about space and Earth, but do you know anything about space and the other planets in our Solar System? Take this Planets Quiz to see how small and fragile your mind is. 

Do you know how many rings Saturn has? Which planet has the most moons? What planet has the largest ocean or the highest mountain? Which is the hottest? The coldest? Spins the fastest? Although you may remember some of the answers from your elementary school unit on space, we'll be really impressed if you remember them all with this Planets Quiz. 

Men are from Mars, women are from Venus...but everyone's from our Solar System, as you'll soon discover by acing our Planets Quiz. 

Try all of our Science Quizzes

If beakers, test-tubes, and microscopic lenses are your thing, our science section was designed to entertain you. QuizGriz has combined fun with knowledge in our collection of science quizzes by testing your memory on everything from chemistry to physics while including fun facts along the way. 

If you're in a Space Race, continue with our other space-centric quizzes, like our historical Space Week Quizzes. Or maybe you're scared of the dark and want to know why? Try our Phobias Quiz to find out. What about your mind – wanna know how it works? Well, here's a Human Mind Quiz for you. Whether your niche is narrow or wide, we have a science quiz just for you!