The Solar System Trivia Questions

  • ❓ 137+ questions
  • 🗂️ Space
  • 🎚️ Easy to expert
  • ✨ Free to play

Our Sun and its orbiting bodies. Play The Solar System trivia solo to sharpen your knowledge, or challenge a friend head-to-head in Trivia Tango — every question comes with an explanation so you learn as you play. Questions span every level, from easy warm-ups to expert-level stumpers, so there's a real challenge here however much you already know.

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Sample The Solar System Quiz Questions

A mix of easy, medium and hard — questions run from warm-up to expert, so there's a real challenge at every level. Think you know the answers? Play to find out.

  1. The planet known as the "Red Planet" due to iron oxide on its surface.

    Difficulty: Easy
    • Venus
    • Mars
    • Mercury
    • Jupiter
  2. The phenomenon where the Moon passes between Earth and the Sun, blocking sunlight.

    Difficulty: Medium
    • Lunar eclipse
    • New moon
    • Solar eclipse
    • Supermoon
  3. The dynamo process generating magnetic fields in the liquid metallic cores of planets.

    Difficulty: Hard
    • Thermoelectric effect
    • Ferromagnetic alignment
    • Magnetohydrodynamic dynamo
    • Permanent magnetization
  4. The star at the center of our solar system that provides Earth with light and heat.

    Difficulty: Easy
    • The Sun
    • Polaris
    • Sirius
    • Alpha Centauri
  5. The dwarf planet that was reclassified from planet status in 2006.

    Difficulty: Medium
    • Ceres
    • Eris
    • Pluto
    • Haumea
  6. The resonance keeping Pluto and Neptune from ever colliding despite crossing orbits.

    Difficulty: Hard
    • 2:1 resonance
    • 3:2 resonance
    • 4:3 resonance
    • 5:3 resonance
  7. The planet famous for its spectacular ring system visible through small telescopes.

    Difficulty: Easy
    • Jupiter
    • Uranus
    • Neptune
    • Saturn
  8. The retrograde-orbiting moon of Neptune, likely a captured Kuiper Belt object.

    Difficulty: Medium
    • Proteus
    • Nereid
    • Larissa
    • Triton

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