vocabulary
Across
- 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
Down
- 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