Across
- 2. a system of millions or billions of stars
- 3. meet (someone) unexpectedly
- 4. the force that attracts a body towards the centre of the earth
- 6. produce and discharge (something, especially gas or radiation)
- 8. lack of faith
- 9. a group of stars forming a recognizable pattern
Down
- 1. a vehicle used for travelling in space
- 5. a building devoted to the worship of a god or gods
- 7. a person who is trained to travel in a spacecraft
- 10. an extensive group of states or countries ruled over by a single monarch