Ключевые слова: astrology, astronomy, black, calendar, change, chart, compare, comparison, concept, crescent, description, different, earth, education, full, full moon, gibbous, half, hemisphere, illuminated, illustration, labeling, lunar, lunation, moon, moonlight, names, nature, night, northern, observe, observer, phases, quarter, science, sequence, shadow, shapes, southern, text, time, visible, waning, waxing,