Across
- 1. discovered galaxies moving apart
- 3. distance between two successive crests or troughs of a wave
- 5. microwaves that use energy from the sun
- 6. a theory about the creation of the universe
- 7. lights from stars that can be separated into a band of colors
- 9. a way of measuring width
Down
- 2. better understanding of gravity
- 4. protons, neutrons, electrons universe made of all matter and space
- 8. the wavelength of the light being stretched