The Sun is a massive star at the center of our solar system, providing light and heat to the planets, including Earth. It is primarily composed of hydrogen and helium and is essential for life, influencing weather patterns and supporting photosynthesis in plants. The Moon is Earth's only natural satellite, orbiting our planet at an average distance of about 238,855 miles. It affects ocean tides due to its gravitational pull and has phases that change throughout the month, from new moon to full moon. The Moon also plays a significant role in various cultural and scientific contexts.