Across
- 2. Solid, central part of a comet
- 3. A sphere surrounding our solar system
- 5. Surrounds the nucleus of a comet
- 6. A comet that appears every couple hundred years
- 8. A comet that appears once or twice in a person's lifetime
- 9. Circles around our solar system
Down
- 1. The tail of particles from a comet
- 4. The most popular comet we can see from the earth every 76 years
- 7. The tail of gas from a comet