Across
- 3. what does GRB stand for?
- 9. smallest planet.
- 10. the universe is made of _____.
- 11. it is endless.
Down
- 1. ball of gas.
- 2. UY Scuti is a ___.
- 4. our galaxy.
- 5. helps you see space.
- 6. when a star explodes it is called a _________.
- 7. sucks you in.
- 8. not a planet.