Big Bang Vocabulary

12345678910
Across
  1. 2. Used to study light
  2. 3. 73% H 25% He 2% everything else
  3. 6. Theory that the universe is constantly expanding
  4. 9. Wilson & Penzias, heard this over air waves when working on a radio
  5. 10. Theory of relativity
Down
  1. 1. During the beginning the universe was full of
  2. 4. 5 billion years
  3. 5. First atom
  4. 7. Theory that galaxies are moving apart from each other
  5. 8. First subatomic particle