: The program categorized missions from G-type (initial landing) through H-type (extended stay with lunar walking) to J-type missions.

In various mystical traditions, notably and esoteric philosophy, the "Astral Alem" or Alem-i Misal (World of Images/Similitudes) represents an intermediate dimension between the physical and the spiritual.

: Modern interpretations often link this to astral projection , the belief that human consciousness can express itself in extra-physical dimensions to expand mental and emotional faculties. 3. Pop Culture: "Astral Realm" in Music