Across
- 3. CMBs are the ______ microwaves in the universe.
- 4. one of the most important discoveries of the universe
- 5. the most abundant elements in the visible universe.
- 6. is always expanding
Down
- 1. is the theory that the universe is always expanding
- 2. When the universe started it was full of
- 7. is the first sparticle particle to show up.