Across
- 1. A galaxy with outstretching arms
- 3. Collection of planets revolving around a star
- 5. Attracts objects in space with immense gravity
- 7. The study of space, stars, and planets
- 9. A galaxy with no defined shape
- 10. A collection of stars held together by gravity
Down
- 2. Not a real science
- 4. Galaxy shaped like a football
- 6. An individual body of mass and energy
- 8. The galaxy with our Earth in it