: The program categorized missions from G-type (initial landing) through H-type (extended stay with lunar walking) to J-type missions.
1. Scientific & Historical: Apollo Lunar Exploration Missions (ALEM) Astral Alem
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. : The program categorized missions from G-type (initial
: J-missions used an upgraded Command Service Module (CSM) equipped with X-ray and gamma-ray spectrometers to perform orbital surveys of the lunar surface. notably and esoteric philosophy