Across
- 3. most popular galaxy.
- 4. bowl shaped hole causes by explosion.
- 5. a fundamental building block that cant be seen.
- 6. only planet proven to have human life.
- 8. a group of stars forming a recognizable pattern.
- 10. fith planet from the sun.
- 12. theory in Which the universe was made.
- 15. produces light at night.
- 18. envelope of gases surrounding the earth or another planet.
- 23. planet with an extremely tilt.
- 24. a celestial object consisting of a nucleus.
- 25. is in the center of our solar system.
- 26. the furthest planet from the sun.
Down
- 1. a small planet.
- 2. plasma held by its own gravity.
- 7. rocky object that orbits the sun.
- 9. most popular star constellation.
- 11. region of space time in which nothing can escape.
- 13. system of billions of stars.
- 14. another word for the universe.
- 16. planet that appears red be cause of rust.
- 17. closest planet to the sun.
- 19. a curved path.
- 20. most popular dwarf planet.
- 21. biggest planet that has rings.
- 22. the hottest planet in the solar system.