If your kids are obsessed with planets, rockets, astronauts, or anything that sparkles in the night sky, these space riddles are going to be a hit. I love using riddles like these during homeschool breaks, car rides, or right before bedtime when curiosity is high but screens are off.
This collection of space riddles for kids mixes fun, learning, and just enough challenge to keep kids thinking — without frustration. Every riddle includes an answer, making them perfect for family game nights, classrooms, or quick brain breaks.
More riddle fun you’ll love:
- Entire Riddles Collection
- Math Riddles
- Hard Riddles for Teens
- Ice Cream Riddles
- Riddle Me This Riddles
Top 10 Best Space Riddles for Kids
- What shines in the sky at night but isn’t the moon?
Answer: Stars - What planet is known as the Red Planet?
Answer: Mars - I’m round, I glow at night, but I don’t make my own light. What am I?
Answer: The moon - What flies into space but never flaps its wings?
Answer: A rocket - What galaxy do we live in?
Answer: The Milky Way - I have rings but I’m not a phone. What planet am I?
Answer: Saturn - What do astronauts float in while in space?
Answer: Zero gravity - What do you call a shooting star that isn’t really a star?
Answer: A meteor - What planet is closest to the sun?
Answer: Mercury - What pulls planets, moons, and people toward each other?
Answer: Gravity
Free Printable: Riddle Cards
Grab our free Riddles for Kids printable cards—perfect for car rides, brain breaks, family game night, or anytime kids want a challenge. Each card includes a kid-friendly riddle that gets kids thinking, laughing, and problem-solving together.
Easy Space Riddles for Kids
- What shines in the sky at night but isn’t the moon?
Answer: Stars - What planet do we live on?
Answer: Earth - I’m round, I’m bright, and I light up the night. What am I?
Answer: The moon - What flies into space but never flaps its wings?
Answer: A rocket - What do astronauts wear to stay safe in space?
Answer: A spacesuit - What is full of stars but isn’t the sky?
Answer: A galaxy - I rise and I set, but I’m not alive. What am I?
Answer: The sun - What do you call a person who travels in space?
Answer: An astronaut - What planet is known as the Red Planet?
Answer: Mars - What do planets orbit around?
Answer: The sun
Clever Space Riddles
- I have rings but I’m not a phone. What am I?
Answer: Saturn - I’m made of gas but I’m not air. What am I?
Answer: A planet - What has craters but no holes?
Answer: The moon - I’m always moving but never leave my place. What am I?
Answer: Earth (orbiting) - What burns but isn’t fire?
Answer: The sun - I’m bigger than Earth but not the biggest of all. What am I?
Answer: Jupiter - What do you call a shooting star that isn’t really a star?
Answer: A meteor - I separate planets and stars from Earth. What am I?
Answer: Space - What planet is closest to the sun?
Answer: Mercury - What do astronauts float in?
Answer: Zero gravity
Funny Space Riddles
- Why didn’t the sun go to college?
Answer: It already had a million degrees - Why do astronauts use Linux?
Answer: You can’t open Windows in space - Why did the moon skip dinner?
Answer: It was already full - Why don’t aliens eat clowns?
Answer: They taste funny - Why did the star go to school?
Answer: To get brighter - What do planets like to read?
Answer: Comet books - Why was the astronaut calm?
Answer: He had space to think - Why did Mars break up with Earth?
Answer: Needed space - What kind of music do planets like?
Answer: Neptunes - Why don’t stars ever gossip?
Answer: They don’t want to cause a black hole
Space Science Riddles
- What pulls planets together?
Answer: Gravity - What is Earth’s natural satellite?
Answer: The moon - What galaxy do we live in?
Answer: The Milky Way - What do you call rocks from space?
Answer: Asteroids - What explodes in space and shines bright?
Answer: A supernova - What protects Earth from harmful rays?
Answer: The atmosphere - What is the center of our solar system?
Answer: The sun - What do astronauts sleep in while floating?
Answer: Sleeping bags - What planet has the most moons?
Answer: Jupiter - What keeps us from floating away on Earth?
Answer: Gravity
Tricky Space Riddles
- I’m endless, dark, and full of light. What am I?
Answer: Space - I bend light and swallow stars. What am I?
Answer: A black hole - I’m hot, huge, and give life to planets. What am I?
Answer: The sun - I’m named after a Roman god and tilt on my side. What am I?
Answer: Uranus - I glow at night but don’t make my own light. What am I?
Answer: The moon - What travels millions of miles but weighs nothing?
Answer: Light - I’m round, cold, and far away. What am I?
Answer: Pluto - What planet spins the fastest?
Answer: Jupiter - What’s bigger than Earth but smaller than the sun?
Answer: A planet - What do all planets have in common?
Answer: They orbit a star
Space has a way of sparking curiosity like nothing else, and riddles make learning about it even more fun. Whether your kids are dreaming of becoming astronauts or just love asking “why,” these space riddles are a simple way to turn curiosity into connection.
If your kids enjoyed these, try one of our other riddle collections next.
More riddles kids love:
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Michele Tripple is a renowned author and expert in the fields of parenting, relationships, and personal development. She is a certified Life Coach with her degree in marriage and family studies, her experience as a Family Life Educator, and over a decade of experience as a professional writer; Michele has authored books that provide practical advice and insights into improving family dynamics and personal growth. Her work is celebrated for its blend of research-driven information and relatable, real-world applications. Michele has been a keynote speaker at conferences and has contributed to numerous publications and media outlets, solidifying her reputation as an authoritative voice in her field and helping families build relationships.