Across
- 5. -elliptical galaxy
- 9. -French astronomer who identified some of the first galaxies to be seen.
- 12. -how many stars are in the universe?
- 17. flat rotating disk that contains stars, gas, and dust, and a central concentration of stars.
- 19. how old is the milky way?
- 20. - telescope that has helped astronomers discover more information on galaxies, and help scientists know how galaxies and planets are formed.
Down
- 1. American astronomer who proved that objects in the sky were to be clouds of dust and gas.
- 2. what happens when a galaxy dies?
- 3. what percentage of the galaxy is seen with the naked eye?
- 4. Most galaxies have this at the center of them.
- 6. -A galaxy that does not have distinct regular shape.
- 7. a spiral galaxy with a central bar shaped structure that contains stars.
- 8. - what is the main thing galaxies are named after?
- 10. the closest galaxy to the milky way
- 11. irregular galaxy
- 13. -spiral galaxy
- 14. -barred spiral galaxy
- 15. galaxy–galaxies whose gravitational fields result in a disturbance of one another.
- 16. -One hundred thousand million stars are in the?
- 18. -a galaxy with a smooth shape, looking featureless.