The Solar System Quiz
Planets, moons, the Sun and the strange worlds of our cosmic neighbourhood.
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About the The Solar System Quiz
Eight planets, hundreds of moons and countless asteroids and comets orbit our Sun. This quiz tours the solar system, from scorching Mercury to icy Neptune, with stops at the Moon, Jupiter’s storms and Saturn’s rings.
This quiz has 20 questions, served in rounds of 10 with a fresh mix and shuffled answers every time you play. Every answer comes with a short explanation.
Sample The Solar System Questions & Answers
Q1. Which planet is closest to the Sun?
✅ Answer: Mercury
💡 Mercury orbits the Sun in just 88 Earth days.
Q2. What is the largest planet in our solar system?
✅ Answer: Jupiter
💡 Jupiter is more than twice as massive as all the other planets combined.
Q3. Which planet is known as the Red Planet?
✅ Answer: Mars
💡 Iron oxide (rust) in its soil gives Mars its reddish colour.
Q4. What is the hottest planet in the solar system?
✅ Answer: Venus
💡 Venus’s thick carbon dioxide atmosphere traps heat, reaching about 465°C.
Q5. Which planet is famous for its prominent ring system?
✅ Answer: Saturn
💡 All four giant planets have rings, but Saturn’s are by far the brightest and largest.