Across
- 2. massive glowing cloud of gas in interstellar space
- 4. Closest planet to the Sun
- 5. Independent group of stars in the Universe
- 6. Eighth and furthest known planet orbiting the Sun
- 11. A famous NASA programme to land man on the moon
- 12. A person trained for space flight
Down
- 1. Nearest major galaxy to the milkyway
- 3. Where Gold comes from
- 6. The surname of the man associated with Gravity
- 7. Largest moon of Saturn
- 8. Our Galaxy
- 9. Manmade objects furthest away from Earth
- 10. Earths only natural satellite