vocabulary

4. what is needed to do work
5. a theory that the universe is constantly expanding
6. one of the first elements formed and people use it to make balloons float
7. a man who denied the big bang theory and instead promote the theory of stellar nucleosynthesis
8. a person who played a big role in helping to prove that the universe is constantly expanding
9. light shifts in different diretions as galaxies move
13. the range of frequencies of electromagnetic radiation
15. a man who developed the theory of relativity
16. the branch of science that deals with space

1. a scale of how much light the human eye can see
2. one of the first elements formed and is used to generate electricity
3. two men who discovered cmb while working on a radio
10. splits light from something in space so that the wavelength can be recorded
11. the thing that holds all of the existing known matter
12. radiation left over from the big bang
14. a system of stars and planets help together by gravity