Hint: In the night sky
The answer to this puzzle is:
1. STAR
2. MOON
3. COMET
4. PLANET
5. SHADOW
6. SATURN
7. LANTERN
8. GALAXY
9. MARS
10. VENUS
11. BAT
12. JUPITER
2. MOON
3. COMET
4. PLANET
5. SHADOW
6. SATURN
7. LANTERN
8. GALAXY
9. MARS
10. VENUS
11. BAT
12. JUPITER