Across
- 2. a separation of components of light based on wavelength
- 3. smallest unit of matter
- 9. related to the universe
- 11. energy moving from one place to another as waves
- 12. particle composed of two or more atoms
- 13. small
Down
- 1. a star that suddenly increases in brightness
- 4. a tool to make distant objects appear closer
- 5. subatomic particle with negative energy
- 6. getting bigger
- 7. all existing matter and space
- 8. A cloud of gas and dust in space
- 10. stretching the wavelength of light so it appears more red