Across
- 4. Most accepted theory of our Universe's origin
- 5. First manned mission to land on the Moon
- 7. Distance that light travels in a year
- 8. Region of space where there are very few galaxies
- 9. Theory of a continually expanding and collapsing universe
Down
- 1. Another name for the Cosmos
- 2. Designation given to large black holes
- 3. Visible matter as opposed to dark matter
- 6. Collection of stars and planetary systems