Across
- 2. how many types of galaxies are there
- 4. Beginning of the universe
- 6. person who introduced the theory of relativity
- 7. the beginning building block of the universe
- 9. A spectrum used to measure light
- 10. one of the first elements in the universe
Down
- 1. last name of person who introduced the theory that galaxies are moving away
- 3. contains everything that exists
- 5. What we call a dead star
- 8. type of galaxy that appears to be in a spiral