Across
- 5. invisible matter starts with "dark."
- 6. when a star dies.
- 8. opposite of day.
- 9. ball of rock or gas with a molten core.
Down
- 1. how the world began in space terms
- 2. densest object in space ever.
- 3. invisible energy starts with "dark."
- 4. cloud of hot gas
- 6. the fabric of space
- 7. big ball of fire