// HOW TO PLAY
READ THE QUESTION
Each question is about space, planets, moons, stars, or astronomy. Read carefully — some questions are tricky!
ANSWER FAST
A timer counts down for each question. Faster answers earn more points. Wrong answers or timeouts break your streak.
BUILD STREAKS
Consecutive correct answers build your combo. Streaks multiply your score per question — try not to break the chain!
TOP THE LEADERBOARD
Submit your name at the end of a round to save your score. Play on harder difficulty for more points per question.
FAQ
What topics does Planet Quiz cover? ▾
The 8 planets and their properties (size, moons, temperature), dwarf planets including Pluto, famous moons like Europa and Titan, stars, constellations, black holes, space missions, and astronomy facts.
Is Planet Quiz free? ▾
100% free — no ads, no login, no download. Works in any browser on phone or desktop. Submit your score to the global leaderboard after each round.
How many difficulty levels are there? ▾
Multiple difficulty levels — Easy focuses on basic solar system facts everyone knows, Medium adds moons and missions, Hard brings in advanced astrophysics and obscure astronomy details. Each level also has a shorter timer.
