Across
- 2. A large chunk of rock that orbits the Sun
- 6. A planet with a thick, poisonous, stormy and hot atmosphere
- 7. A system of billions of stars, planets, dust, and gas
- 10. An instrument in space that takes pictures of the Universe
- 12. A big ball of gas that gives off light through nuclear fusion
- 14. the star that Earth and the other planets orbit
- 15. A planet that has 70% of its surface covered in water
- 17. The Sun and planets with their moons in orbit around the Sun
- 20. a region between Mars and Jupiter where many rocky bodies are found
- 21. the natural satellite of Earth
Down
- 1. A big, gassy, deep blue planet
- 3. All of space and all the matter within it
- 4. A craft used to transport humans into orbit around earth and back
- 5. A big gassy, light blue planet that spins on its side
- 8. The light when a space rock burns in the atmosphere
- 9. A very hot planet with almost no atmosphere
- 11. A group of stars forming a recognizable pattern
- 13. The largest planet with a great red spot
- 16. An object of ice and dust that forms a tail when close to the Sun
- 18. A giant planet with large rings made of gas and dust
- 19. A person trained to travel in a spacecraft
- 21. A red planet with the largest volcanoes and the highest mountains