Across
- 3. The path something follows around an object
- 8. A disease that slowly affects someone's muscles
- 11. The power that makes things move or work
- 13. The tiny center of a black hole
- 15. The study of how things move and work
- 16. Giant glowing balls in space
- 17. Everything that exists
- 20. Energy moving in waves or particles
- 21. Another word for the universe
- 24. A large group of stars and planets
Down
- 1. A chair with wheels that helps people move
- 2. What helps us see when its dark
- 4. A space object with gravity so strong nothing escapes
- 5. Stephen Hawking used this to operate a computer
- 6. When doctors figure out what illness someone has
- 7. Being brave in hard circumstances
- 9. An idea trying to explain how something works
- 10. The force that pulls things together
- 12. Learning about the world around us
- 13. The huge area beyond Earth
- 14. The study of space and stars
- 18. How much matter something has
- 19. How we measure life periods
- 22. The famous scientist who studied black holes
- 23. What everything is made of