Across
- 2. discovered in December 1985 by the Voyager 2
- 6. named after the Titaness Dione of Greek mythology
- 9. was the first non-round moon to be discovered.
- 12. discovered in October 1851 by William Lassell
- 16. is also known as Jupiter ii
- 18. Discovered by William Herschel in 1787
- 21. discovered on March 18, 1899
- 22. its surface temperature at noon reaches −198 °C
- 24. meaning panic
- 25. meaning fear
Down
- 1. biggest moon of Neptune
- 3. discovered on October 24, 1851
- 4. discovered by Giovanni Domenico Cassini
- 5. second largest moon in the solar system
- 7. discovered by Gerard Kuiper on 16 February 1948
- 8. largest moon in the solar system
- 10. Discovered by Voyager 2 spacecraft in 1989
- 11. another name for the moon
- 13. 4th largest moon in the solar system
- 14. named after a character in Shakespeare's A Midsummer Night's Dream
- 15. called the yin and yang of the Saturn moons
- 17. It is the second smallest body in the Solar System
- 19. discovered by Gerard Kuiper in 1949
- 20. has a diameter of 4821 km
- 23. discovered by William Herschel