vocabulary

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