Astronomy Trivia Questions

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

Scientific study of celestial objects. Play Astronomy 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 Astronomy 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. This is the largest planet in our solar system, known for its Great Red Spot.

    Difficulty: Easy
    • Saturn
    • Jupiter
    • Neptune
    • Uranus
  2. The nearest star system to our Sun, a triple star system about 4.24 light-years away.

    Difficulty: Medium
    • Alpha Centauri
    • Barnard's Star
    • Sirius
    • Wolf 359
  3. The rapid neutron capture process that creates elements heavier than iron during explosive events.

    Difficulty: Hard
    • R-process
    • S-process
    • P-process
    • CNO cycle
  4. Earth's natural satellite that causes ocean tides and is visible most nights.

    Difficulty: Easy
    • Phobos
    • Europa
    • The Moon
    • Titan
  5. The famous comet that returns approximately every 76 years, last visible in 1986.

    Difficulty: Medium
    • Comet Hale-Bopp
    • Halley's Comet
    • Comet Shoemaker-Levy 9
    • Comet NEOWISE
  6. The epoch when electrons combined with protons to form neutral hydrogen, making the universe transparent.

    Difficulty: Hard
    • Reionization
    • Recombination
    • Nucleosynthesis
    • Baryogenesis
  7. The galaxy that contains our solar system, appearing as a band of light across the night sky.

    Difficulty: Easy
    • Milky Way
    • Andromeda
    • Triangulum
    • Sombrero
  8. The rapidly spinning neutron star that emits beams of radiation from its magnetic poles.

    Difficulty: Medium
    • Quasar
    • Magnetar
    • Pulsar
    • Blazar

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