Across
- 2. Pluto's moon named after the Greek goddess of night
- 4. Pluto's core was once _______
- 7. Pluto's moon named after a seven-headed monster
- 9. Pluto is hypothesized to have a _________
- 11. Pluto is this
- 12. named after ______ God of the underworld
Down
- 1. Discovered by _____ W. Tombaugh on February 18, 1930
- 3. Pluto and Charon are considered a ____________
- 5. Pluto's biggest moon
- 6. Pluto's _____ freezes and falls to the ground when Pluto is furthest from the Sun
- 8. Pluto's smallest moon
- 10. Pluto's moon named after an underworld river from Greek mythology