Across
- 1. A big black hole
- 6. A planet that rains diamonds
- 7. a russian astronaut
- 8. biggest planet in the solar system
- 9. Unit of measurement on a cosmic scale
Down
- 2. Galaxy that we will collide with
- 3. A planet must have a _______ shape
- 4. largest planet in the solar system
- 5. On average the closest planet to every planet