Across
- 3. a goal or purpose
- 11. testing an idea to see what happens
- 13. an organized society with cities and government
- 14. something that is unknown or hard to understand
- 17. making or creating a plan or idea
- 18. a place where water is stored
- 19. without any limit
- 20. a vehicle that travels in space
- 22. a rock from space that enters the Earth's atmosphere
- 23. the force that pulls objects toward each other
- 24. to confuse or puzzle someone
- 27. disorder or randomness in a system
- 29. a small rocky object in space
- 30. the path of an object around a planet or star
- 31. judging how good or correct something is
- 33. a region in space with very strong gravity
- 35. to move very fast in science fiction
- 36. to settle in a new land and control it
Down
- 1. the process of getting larger
- 2. to fall down or fail
- 4. having the skills or knowledge for something
- 5. no longer existing
- 6. how heavy something is for its size
- 7. an idea that can be tested in science
- 8. relating to the sun
- 9. energy that travels through space or air
- 10. a theoretical passage connecting two points in space
- 12. looking carefully at something
- 15. when one object blocks another in the sky
- 16. improving something to make it more accurate
- 21. material used to make clothes or objects
- 25. an idea suggested for discussion
- 26. to make a planet suitable for humans
- 28. a theory or idea that is not based on real science
- 32. relating to the moon
- 34. a small settlement far from other places