Across
- 2. a scale of how much light the human eye can see
- 5. a man who developed the theory of relativity
- 6. the branch of science that deals with space
- 7. the thing that holds all of the existing known matter
- 8. two men who discovered cmb while working on a radio
- 9. splits light from something in space so that the wavelength can be recorded
- 13. a theory that the universe is constantly expanding
- 14. one of the first elements formed and is used to generate electricity
- 15. one of the first elements formed and people use it to make balloons float
- 16. what is needed to do work
Down
- 1. the range of frequencies of electromagnetic radiation
- 3. a system of stars and planets help together by gravity
- 4. light shifts in different diretions as galaxies move
- 10. a man who denied the big bang theory and instead promote the theory of stellar nucleosynthesis
- 11. radiation left over from the big bang
- 12. a person who played a big role in helping to prove that the universe is constantly expanding