Across
- 3. Planet closest to the sun
- 5. Bowl-shaped depression on a planet or moon
- 6. Large celestial body that revolves around a star
- 9. Group of stars forming a recognizable pattern
- 12. Earth's natural satellite
- 14. When one celestial body passes in front of another, blocking its light
- 16. Circular bands of rock and ice around a planet
- 18. Second planet from the sun
- 20. Distance that light travels in one year (5.88 trillion miles)
- 22. Object made mostly of ice, dust, and rocky material that orbits the sun
- 23. Massive, luminous sphere of plasma held together by gravity
- 25. A space rock entering the earth's atmosphere and burning up
- 27. Galaxy that contains our solar system
Down
- 1. All of space and everything in it
- 2. Largest planet in our solar system
- 4. Object that orbits a planet
- 7. Object mostly made of metal and rock that orbits the sun
- 8. Star around which the earth orbits
- 10. Path a celestial object takes as it revolves around another object
- 11. Sun and the planets orbiting in it
- 13. Fourth planet from the sun
- 15. Sixth planet from the sun
- 17. Massive collection of stars, gas, and dust held together by gravity
- 19. A cloud of gas and dust in space
- 21. Device used to observe distant objects in space
- 24. Force that pulls objects toward each other
- 26. Relating to the moon