Across
- 4. To have become greater in size, amount, or degree
- 9. Unusual or difficult to understand
- 10. The rate at which something moves
- 11. Unexpected or causing a feeling of wonder
- 13. To strike a surface, like a door, to get attention
- 15. Scientists who study stars, planets, and the universe
Down
- 1. The path that a moving object follows
- 2. Something that is difficult or impossible to understand or explain
- 3. A word that means "perhaps" or "possibly"
- 5. The Sun and all the planets that move around it
- 6. Not the same as other
- 7. Going by or moving past a location
- 8. Occuring or situated between the stars
- 12. To travel through a place to learn about it
- 14. Not thick; having a small distance between two opposite sides