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Solar System and Planet Facts Trivia

Planet order, planetary nicknames, and quick solar-system facts for a compact space quiz.

15 questionsMedium mixCurated setFree to play
Question 1 of 15Medium

Which asteroid is known to have two moons in its orbit?

Choose one answer to reveal the explanation.

Topic guide

About this solar system trivia quiz

Solar system trivia brings together 15 multiple-choice questions about solar system and planet facts. This medium-difficulty set belongs to the science collection and is designed for a quick, replayable way to test what you know while discovering a few unexpected facts.

The set includes prompts such as “Which asteroid is known to have two moons in its orbit?”, “What is the dwarf planet 2015 TG387 nicknamed?” and “What shape can scientists see on Saturn around its northern pole?”. Read each question carefully, choose an answer, and use the explanation after each round to learn the context behind the correct choice. You can also challenge a friend to the same topic when you are ready for a head-to-head trivia duel.

What you will explore

What does this trivia set cover?

  • Which asteroid is known to have two moons in its orbit?
  • What is the dwarf planet 2015 TG387 nicknamed?
  • What shape can scientists see on Saturn around its northern pole?
  • How many pieces of human-made debris currently orbit Earth?
  • Why is Mercury challenging to observe?
Question preview

Trivia questions in this set

15 questions · Science

Browse the question topics before you play solar system trivia. The full answer explanation appears after you choose an option in the quiz above.

  1. Which asteroid is known to have two moons in its orbit?
  2. What is the dwarf planet 2015 TG387 nicknamed?
  3. What shape can scientists see on Saturn around its northern pole?
  4. How many pieces of human-made debris currently orbit Earth?
  5. Why is Mercury challenging to observe?
  6. Many believe we can live on Mars — according to the book, who are already working on transport plans?
Show all 15 question prompts
  1. In 2020, the European Space Agency and NASA launched what spacecraft for a closer look at the effects of eclipses?
  2. Which element has the chemical symbol 'Fe'?
  3. Which natural disaster is measured by the Richter scale?
  4. What is the freezing point of water in Fahrenheit?
  5. Which planet is known as a "gas giant"?
  6. Which gas do plants absorb from the atmosphere?
  7. What does a thermometer measure?
  8. What color are emeralds?
  9. Which planet is closest to the Sun?

Questions are from the Selected 500 Trivia Question Bank, with the current set reviewed on 2026-08-07.

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