Across
- 2. the study of the origin, structure, and future of the universe
- 5. the radiation left over from the big bang
- 7. the theory that the universe started with an explosion
Down
- 1. the act of getting bigger
- 3. what the sun will burn up in (the show name of my pony)
- 4. all matter and space grouped together
- 6. when many things are tightly grouped together