Across
- 5. Leader of the moons against Planet X
- 7. Heading away from Mars
- 11. Sounds like "salad" in Spanish
- 13. The second densest planet
- 15. Scheduled to crash against Mars in a few million years
- 16. Mute human
- 18. Nearly the same size as Pluto
- 20. Moon killer
- 22. Is hungry and wants to go to McDonald's
- 25. Home to SiBO
- 27. The show's main star
- 28. Space Astronaut Replacement
- 29. Ejected from the early Solar System
- 30. Started the Moon-based Solar System
- 34. Soviet astronaut with a moon base
- 35. Obsessed with entropy
- 36. The first human to go to Mars
- 38. Caused the Grand Tack
- 39. Has his own spinoff channel
- 40. The Death Star
Down
- 1. Ganymede accidentally called her "babe"
- 2. SAR is currently located here
- 3. Former best friend of Planet X
- 4. Mute moon
- 6. The hottest planet
- 8. Only male moon of Uranus
- 9. The reddest celestial body
- 10. Astrodude's Home Planet
- 12. Smells like rotten eggs, counterpart to Caelus
- 14. Astrodude's Boss
- 17. Captured moon that killed Neptune's former moons
- 18. Manipulator behind the Moon Revolution
- 19. Ceres' best friend
- 21. Silly planet; lost his mind
- 23. Her name makes Earth go insane
- 24. Girl with no eyelashes; likes Triton
- 26. Missed the entire Moon Revolution
- 31. Yellow and pukes sulfur
- 32. Moon with a possible ring system
- 33. Named after Earth's tallest known tree
- 36. Married to Astrodude
- 37. Former planet