Across
- 5. device used to observe distant objects
- 9. stars, gas and dust held together by gravity
- 10. combination of knowledge, equipment, or methods used in scientific or industrial work
- 12. a particle made of two or more atoms
- 16. all of space and everything in it
- 17. to group by shared features
- 18. creation of something new, something created
- 20. scientific study of matter and the elements
Down
- 1. the science of matter and energy
- 2. the study or structure of an animal or plant
- 3. act of looking for information on a subject
- 4. the completion of one rotation or orbit
- 6. one who studies stars, planets, and space
- 7. the study and science of life and living things
- 8. a trial procedure to discover an outcome
- 11. motion around a central point or axis
- 13. study of facts, principles and methods
- 14. obscuring of one celestial body by another
- 15. optical instrument to magnify tiny things
- 19. derived from the center of an atom