Across
- 3. an eye in the sky
- 4. when only one star is seen
- 5. created at the end of a massive star
- 10. comets’ home
- 11. distance between two crests or troughs
- 12. planet where only robots roam
- 14. goes around what goes around
- 18. the densest planet
- 20. tool for two eyes
- 23. a mechanical model of a solar system
- 24. fireworks at the end of star life
- 26. a star astronomer
- 27. it contains big spoon
- 28. planet without any moons
- 29. path of a planet
- 31. a natural alchemy
- 35. related to moon
- 36. those 12 signs
- 37. star nursery or a graveyard
- 41. the beginning
- 43. Sun rises in the west here
- 44. wanderer of the sky
- 45. planet that goes sideways
- 46. the hunter
- 47. Rontgen ray
- 49. a ball of hydrogen and helium
- 50. it does not contain any matter
- 53. everything ever
- 54. a colorful display in sky
Down
- 1. a cold ice giant
- 2. milky way
- 5. a star astronomer
- 6. 3/21 or 9/21 would be equally good clues
- 7. a star astronomer
- 8. brings the sky down to earth
- 9. an infrared space observatory
- 13. a star astronomer
- 15. our sun is one (think Snow White)
- 16. a small rock in space
- 17. Galilean moons orbit this planet
- 19. connecting the starry dots
- 21. a big rock in space
- 22. this is where Cassini explored and took its final plunge
- 24. longest day or night
- 25. a spherical cloud outside solar system
- 30. an icy thing that moves in a long ellipse
- 32. star gazer
- 33. one lap of the planet
- 34. space between stars
- 38. an active galaxy near the supermassive blackhole
- 39. between half and full
- 40. astronomer’s tool
- 42. a star cluster
- 48. a cosmic hide and seek
- 51. original Planet 9
- 52. how many in a second?