Across
- 3. A star-shaped symbol.
- 5. The science of stars, and possibly predictions.
- 6. A synonym for 'catastrophe'.
- 8. A microscopic, parasite, or germ.
- 9. Relating to the environment, and natural resources.
Down
- 1. A scientist, studying stars and planets.
- 2. The study of life.
- 4. A piece of potentially harmful debris, within space.
- 5. A field of science pursued by astronomers.
- 7. The study of communities, families and of relationships.