Across
- 2. - a type of jet propulsion device
- 4. - the process of burning something
- 5. - a school subject that involves numbers
- 7. - moves around, pertains to space
- 10. - the name of a character off of the Simpsons
- 11. - something that orbits space
- 12. - a Russian satellite
- 13. - region of the atmosphere
- 14. - helped teach Homer about rockets
Down
- 1. - involved with NASA
- 3. - someone who helps you in school
- 6. - a place where you work that relates with extracting coal or other minerals
- 8. - a material used for research or literature
- 9. - a biography written from personal knowledge
- 11. - a type of school subject that studies the physical and natural world