Across
- 2. The name of the star closest to the Earth
- 4. Negative particle in an atom
- 7. Name of the galaxy that Earth is in
- 8. Name of the rocky planet that we live on
- 9. An icy rock moving through space with a long "tail"
- 11. Force that pulls objects
Down
- 1. Cloud of gas and dust that makes stars
- 2. A large ball of gas
- 3. Collection of stars, planets, nebulas
- 5. To go around or revolve around
- 6. So powerful that not even light can escape its gravity
- 10. Creates the seasons on Earth