Space Riddles

Press the button for one riddle about the sun, the moon or the stars, then tap Show answer.

  1. What is the difference between the Earth and the sea?
All 18

How it works

These space riddles are 18 old riddles about the sun, the moon, the Earth, the stars and a comet. Each answer stays hidden until you tap Show answer, so everyone can guess first.

Read the full guide

Sun, moon and stars

Sun, moon and Earth has 10 riddles, such as the moon that weighs four quarters. Stars and comets has 8, from the comet with a tail to the Pointers, two stars of the Great Bear that point the way to the North Star.

Where they come from

Every riddle is in an old riddle book, free to read at Project Gutenberg and named under the full list. They were written for fun, not for science: the answers are puns, and a star riddle teaches word play rather than astronomy.

Tips
  • Read one on a clear night and let the answer wait until everyone has found the moon.

Questions and answers

What are good riddles on space for kids?

"How much does the moon weigh?" (four quarters) and "Plant the setting sun, and what comes up?" (a morning glory) need no hard words. Word play marks the 13 that turn on a sound, such as tidy and tide.

Are the Pointers real stars?

Yes. Merak and Dubhe, two stars of the Big Dipper in the Great Bear, are called the Pointers because a line through them leads to the North Star. The riddle's joke is that pointers and setters are also kinds of hunting dog.

Why are there only 18 riddles?

The old riddle books hold few about space, and we took only those that are clean and still make sense. The star and moon riddles on the main riddle page are not repeated here.

All 18 riddles

Sun, moon and Earth 10

  • How does a sailor know there is a man in the moon? He has been to sea (see). And he did not stay there because it was full.
  • How much does the moon weigh? Four quarters.
  • If I am in the sun and you are out of it, what does the sun become? Sin. Take the U out of sun and put the I in.
  • Plant the setting sun, and what comes up? A morning glory.
  • What is the difference between the Earth and the sea? One is dirty, the other is tidy (tide-y).
  • What is the difference between the North Pole and the South Pole? All the difference in the world.
  • What made the potatoes rot? The rot-atory motion of the Earth.
  • Why does the sun always rise in the east? Because (y)east makes everything rise.
  • Why is a judge's nose like the middle of the Earth? It is the center of gravity.
  • Why is the sun like a good loaf of bread? It is light when it rises.

Stars and comets 8

  • I have a little sister who wades deep waters and climbs high mountains, and she has only one eye. Who is she? A star.
  • What is the difference between a star and a meteor? One is a son (sun); the other is a darter (daughter).
  • Which stars are always in trouble with hunters' laws? Shooting stars.
  • Which two dogs in the Great Bear never go down? The Pointers. They are not setters.
  • Who are the best astronomers? The stars. They have studded (studied) the heavens for ages.
  • Why are the stars like an old barn? Both have r, a, t, s (rats) in them.
  • Why is a comet more like a dog than the Dog Star is? The comet has a tail, and the Dog Star has not.
  • Why is an astronomer like a theater manager? Both are always looking for new stars.
How this list was compiled

Traditional riddles found in 3 public domain books on Project Gutenberg: The Nursery Rhymes of England (J. O. Halliwell, 1886) https://www.gutenberg.org/ebooks/32415; The Handbook of Conundrums (Edith B. Ordway, 1915) https://www.gutenberg.org/ebooks/32898; How to Solve Conundrums (1900) https://www.gutenberg.org/ebooks/44099. Book texts fetched from https://www.gutenberg.org/cache/epub/<id>/pg<id>.txt on 2026-09-24, and a script found the key words of every riddle and answer in one passage of its cited book (the line number is kept in x.line). Every riddle and answer was then told again in plain words for this page. Every answer is about the sun, the moon, the Earth, a star, a comet or an astronomer. None is on this site's riddle-generator page (which already has the star higher than a house and the new moon and full moon) or on another page of the riddles set. Licence: public domain sources (Project Gutenberg, https://www.gutenberg.org/policy/permission.html); the wording of each riddle and answer is own work