Solar System Crossword Puzzles: Free Printable and Online

Journey through our Solar System with crossword puzzles about planets, moons, asteroids, and space exploration.

Print any solar system crossword below, download it as a PDF, or play it online. Free, and no signup is needed to play.

7 puzzles, click Print on any puzzle below

Solar System

Hard · 11×11 · 15 words
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Printing for a class?

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Across

  1. 1. A candy bar or a rusty, warring neighbor?
  2. 4. A royal halo seen only when the primary star hides.
  3. 6. Proverbial cheese wheel that pushes and pulls the tides.
  4. 7. Going around in circles, gravitationally speaking.
  5. 8. Throwing shade on a massive, cosmic scale.
  6. 11. A brilliant flash in the pan before hitting the dirt.
  7. 12. A theoretical, icy cloud for cometary origins.
  8. 13. An icy giant that insists on rolling along on its side.

Down

  1. 2. When you're as far away as possible in a satellite relationship.
  2. 3. It's just a blinding phase of plasma, really.
  3. 4. Halley's famous icy tail-wagger.
  4. 5. Cloudy, colorful nursery where massive bodies are born.
  5. 8. An icy Jovian moon hiding a vast, dark ocean.
  6. 9. The undisputed hula hoop champion of the cosmos.
  7. 10. Dirt that we just happen to call home.

Solar System

Easy · 11×11 · 13 words
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Printing for a class?

Print 2 or 4 versions of this puzzle with different grid layouts, so desk neighbors cannot copy answers. Same words and clues, and each version has its own answer key. Class sets are a Plus feature in the Grid Genius app.

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Across

  1. 1. The hot star at the center of our planetary system
  2. 5. The sixth planet from the sun, famous for its large ring system
  3. 7. The third planet from the sun and our home world
  4. 9. A building equipped for viewing the night sky and celestial events
  5. 10. The large natural satellite that orbits Earth
  6. 11. The curved path of a celestial object around a star or planet
  7. 12. The bright radiation provided by our central star

Down

  1. 2. The seventh planet from the sun, known for rotating on its side
  2. 3. A bowl-shaped depression on a surface caused by an impact
  3. 4. A rock from space that burns up in the atmosphere, often called a shooting star
  4. 6. A person trained to travel in a spacecraft
  5. 8. A rocky object orbiting in space, smaller than a planet
  6. 10. The red planet named after the Roman god of war

Solar System

Medium · 11×11 · 15 words
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Printing for a class?

Print 2 or 4 versions of this puzzle with different grid layouts, so desk neighbors cannot copy answers. Same words and clues, and each version has its own answer key. Class sets are a Plus feature in the Grid Genius app.

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Across

  1. 2. The superheated state of matter making up our star
  2. 5. The only known habitable zone resident
  3. 6. The largest resident of the asteroid belt
  4. 8. The invisible thread keeping the planets from wandering off
  5. 11. Rocky remnant floating mostly between Mars and Jupiter
  6. 13. A moon so grand it has its own dense atmosphere
  7. 14. Iconic bands made of dust and ice

Down

  1. 1. Icy traveler that puts on a fiery tail show
  2. 3. Roman god of war, or his planetary namesake
  3. 4. One of two fearful satellites circling the red planet
  4. 5. When a shadow puts on a spectacular daytime show
  5. 7. Jovian moon harboring a hidden ocean
  6. 9. The elliptical path taken year after year
  7. 10. Nighttime wanderer with many phases
  8. 12. Central figure that holds everything together

Solar System

Easy · 11×11 · 16 words
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Printing for a class?

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Across

  1. 3. Earth's natural satellite
  2. 4. NASA missions that sent humans to the moon
  3. 5. Second planet from the Sun
  4. 7. The third planet from the Sun
  5. 9. Invisible force that pulls objects together
  6. 12. The path a planet takes around a star
  7. 13. A glowing ball of gas in the sky
  8. 15. The largest planet in our system

Down

  1. 1. An icy space body with a tail
  2. 2. A well-known icy dwarf planet
  3. 6. The vast empty area beyond our atmosphere
  4. 8. A large rocky object orbiting in space
  5. 9. Massive collection of stars and solar systems
  6. 10. Planet famous for its prominent rings
  7. 11. Tiny pieces of solid matter floating in space
  8. 14. Central star of our planetary system

Solar System

Hard · 15×15 · 18 words
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Printing for a class?

Print 2 or 4 versions of this puzzle with different grid layouts, so desk neighbors cannot copy answers. Same words and clues, and each version has its own answer key. Class sets are a Plus feature in the Grid Genius app.

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Across

  1. 2. An asteroid that hides in a planet's orbit, no horse required
  2. 5. Smoked fish found in the belt of a small icy world
  3. 7. The frozen nursery at the very edge of the neighborhood
  4. 9. The thin air at the exit of the world
  5. 11. The ultimate divider between the light and the dark
  6. 15. Dry seas that never saw a drop of water
  7. 16. The absolute bottom of the celestial sphere
  8. 17. The brilliance of a surface, reflection without thought

Down

  1. 1. A close encounter of the lunar kind
  2. 2. Terrestrial rock with a cosmic melt
  3. 3. The rhythm of an eighteen-year shadow dance
  4. 4. A tiny glass bead fallen from the heavens
  5. 6. A grain of truth that grew into a world
  6. 8. The border where the sun finally loses its breath
  7. 10. A loop of flame that demands your attention
  8. 12. The point of greatest social distancing from the host
  9. 13. Small moon of Saturn or a Greek soul
  10. 14. The vast collection of absolutely nothing

Solar System

Medium · 11×11 · 14 words
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Printing for a class?

Print 2 or 4 versions of this puzzle with different grid layouts, so desk neighbors cannot copy answers. Same words and clues, and each version has its own answer key. Class sets are a Plus feature in the Grid Genius app.

Make a class set →
1
2
3
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Across

  1. 1. A bowl-shaped scar left by a cosmic impact
  2. 3. A streak of light caused by a falling rock
  3. 5. The empty space between celestial structures
  4. 7. Rocky wanderer found mostly between Mars and Jupiter
  5. 11. The hottest neighbor, often mistaken for a star
  6. 12. Polar light show caused by solar wind
  7. 13. The rusty world named for a god of war

Down

  1. 1. The sun's outermost layer, visible during totality
  2. 2. The distant cloud that marks the edge of the system
  3. 4. When one celestial body casts a shadow on another
  4. 6. The swift planet with the shortest year
  5. 8. The ringed beauty that could float in water
  6. 9. The changing appearances of the moon
  7. 10. Relating to the Earth's natural satellite

Solar System

Easy · 7×7 · 7 words
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Printing for a class?

Print 2 or 4 versions of this puzzle with different grid layouts, so desk neighbors cannot copy answers. Same words and clues, and each version has its own answer key. Class sets are a Plus feature in the Grid Genius app.

Make a class set →
1
2
3
4
5
6
7

Across

  1. 1. The vast area that contains all the planets
  2. 5. How Earth differs from all other known planets
  3. 7. The sixth planet famous for its visible rings

Down

  1. 2. The very center of a planet or star
  2. 3. A burning ball of gas visible in the night sky
  3. 4. Energy from the Sun that helps plants grow
  4. 6. The star at the center of our solar system

Make your own Solar System crossword

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Related Printable Crossword Topics

Solar System Crossword FAQ

Is this Solar System crossword puzzle free?

Yes. Every Solar System crossword on this page is free. You can print it, download it as a PDF, or play it online without paying anything or creating an account.

Can I print the Solar System crossword?

Yes. Click Print on any puzzle for a print-ready page with the grid, the clues, and a name and date line, or use Download to save it as a PDF, PNG, or JPEG for photocopying. The PDF download includes a filled answer key on the last page for grading.

Can students play these crosswords online?

Yes. Every puzzle has a Play online link that opens in the browser on any device. No app install and no signup is needed to play, which makes it easy to share with a class.

Can I make my own Solar System crossword?

Yes. The free Grid Genius crossword maker builds a puzzle from your own words and clues, with a printable grid and answer key. The Grid Genius app can also generate a complete crossword from any topic you type.