Ключевые слова: 1960s, american, apollo, astronaut, astronomy, background, boot, century, cosmos, crater, dirt, exploration, foot, footprint, galaxy, ground, history, iconic, impression, jump, land, lunar, manned, mark, mission, moon, nature, outer, planet, print, project, sand, science, shoe, sky, small, space, spacesuit, star, step, surface, technology, texture, track, travel, walk,