Across
- 5. the largest planet and the 5th from the sun
- 6. a program of space flights to land a man on the Moon
- 7. BANG the cosmic explosion
- 8. the wide blue yonder
Down
- 1. Cosmonauts
- 2. A machine to carry a crew into interstellar space
- 3. the smallest component of an element
- 4. giant planet with a ring of ice particles