Across
- 5. the fifth planet in our solar system
- 7. Area of space that contains as many as several thousand galaxies
- 9. Estimated number of galaxies in the universe(it has to be a word not a number)
- 10. A large celestial body that is composed of gas and emits light
- 12. second plant in our solar system
- 15. The four planets that orbit closest to our sun
- 17. small galaxy consisting of as few as 100 million stars
- 20. fourth planet our solar system
- 21. Space and all matter and energy in it
- 22. a galaxy we live on
- 24. The four planets that orbit farthest from the sun
- 25. Look like spheres or ovals, and they do not have spiral arms
- 26. The process that produces energy in stars
Down
- 1. Area of space that contains as many as ten or more clusters of galaxies
- 2. Number of planets that orbit our sun
- 3. a central bulge from which two or more spiral arms extend
- 4. Small bodies that orbit planets
- 6. the eight planet in our solar system
- 8. the six planet in our solar system
- 11. A large collection of stars, gas, and dust that is held together by gravity
- 13. a planet that we live on
- 14. A spherical body that orbits the sun
- 16. The collection of large and small bodies that orbit our central star
- 18. Appear as splotchy, irregularly shaped blobs and Very active areas of star formation
- 19. Area of space where very little matter exists
- 20. a planet that is close to the sun
- 23. The distance that light travels through space in 1 year
- 27. the seventh planet in our solar system