You might want to see the lunar module in person and compare the size of the space suit and size of the astronauts helmet + inflated space suit with the large airpack on the back (extending to behind the helmet) with the dimensions of the lunar hatch/door/opening. Has this been explored? How on earth (or the moon!) could a large space suit and all that equipment (backpack in back, camera in front) get through a small hatch opening? Wish I knew the module dimensions –maybe if you visit the module you can figure it out…or maybe there’s the specs online…anyone check that out?