the big bang theory

3. the distribution of colors produced when light is dispersed by a prism
5. an instrument that splits light into its component wavelengths to record a spectrum
8. an American physicist and radio astronomer.
9. a nonmetallic univalent element that is normally a colorless and odorless highly flammable
11. physicist born in Germany who formulated the special theory of relativity and the general theory of relativity
12. an English astrophysicist and advocate of the steady state theory of cosmology
13. a very light colorless element that is one of the six inert gasses
14. the entire frequency range of electromagnetic waves
16. a renowned American avantgarde stage director, playwright, and visual artist
17. an astronomical phenomenon where light from an object moving toward an observer shifts to shorter

1. everything that exists anywhere
2. the cooled remnant of the hot big bang that fills the entire universe
4. the branch of physics that studies celestial bodies and the universe as a whole
6. a collection of star systems
7. the theory that the universe originated sometime between 10 billion and 20 billion years ago from the cataclysmic explosion
10. a shift in the spectra of very distant galaxies toward longer wavelengths
14. United States astronomer who discovered that the speed with which nebulae recede increases with their distance from the observer
15. forceful exertion