Astronomy Quiz – Space Questions and Answers for Kids, School and Enthusiasts

Test what you know about space

This astronomy quiz has 60 original multiple-choice questions on the Sun, planets, Moon, stars, galaxies and space exploration, split into three levels: kids for ages 6 to 10, school for roughly class 6 to 10 and enthusiast for people who already know a few constellations and want a challenge. After every answer you see whether you were right and a short explanation of why, so you learn from the misses.

The facts are drawn from NASA’s public-domain planetary fact sheet and solar system pages, and the wording is our own. Nothing is uploaded; your best scores stay in your browser.

How to use the Astronomy Quiz

1. Choose a level and how many questions you want: 10, 15 or 20.
2. Read the question and tap an answer, or press 1, 2, 3 or 4 on the keyboard.
3. Read the explanation, then press Next (or Enter).
4. At the end see your score and the questions you missed with their answers. Press New quiz for a fresh random set.

Astronomy Quiz features

What the questions cover

The kids level sticks to the solar system you can see in pictures: which planet is hottest, what the Moon’s phases are, what a shooting star really is. The school level adds the ideas taught in class 6 to 10 science: the seasons, eclipses, nuclear fusion in the Sun, free fall on the space station, and early space history. The enthusiast level asks about magnitudes, spectral types, the Chandrasekhar limit, Hubble’s law, Kepler’s third law, exoplanet detection and the cosmic microwave background.

If a question in the enthusiast set makes you want to calculate rather than guess, try the escape velocity calculator, the orbital period calculator or the magnitude calculator. To learn how you would age or weigh on another world, see weight on other planets and age on other planets.

Using it for class or home

Teachers can run a quick warm-up by projecting the page and letting the class vote on each answer before revealing it. Parents can use the kids level as a bedtime game. The questions are drawn at random from a bank of 20 per level, so a ten-question round will not repeat the same set every time, but over several rounds you will see all of them. A good routine is to play one level until you score 9 out of 10 twice, then move up, and to read every explanation even when you answered correctly, because the reasoning is where most of the learning is.

Limits of this quiz

• Some astronomy facts are measured with growing precision: figures such as the age of the universe or the number of confirmed exoplanets change as new observations arrive, so the questions use rounded, stable values.
• The quiz is for learning and fun, not an official exam or syllabus; school boards differ in what they teach at each class.
• Your scores are stored only in this browser and are lost if you clear site data.