Across
- 3. The fastest interstellar matter can't escape it
- 7. Someone taking pictures of galaxies
- 8. European degree north for the star map
Down
- 1. Something that doesn't move at all
- 2. Sirius signals it
- 4. Second biggest explosion in the universe
- 5. One of the first civilizations, which were interested in the stars
- 6. A belt of three stars