Starry sky refers to all celestial bodies in the night sky, including stars, planets, satellites, meteors, comets and so on. The starry sky at night provides people with a beautiful, mysterious and romantic experience, which makes people indulge in the infinite charm of the universe. The beauty and mystery of the starry sky stem from its huge number and rich variety. The starry sky at night can take on different patterns and shapes, such as Polaris and constellations. Constellation is the "belonging area" of some celestial bodies in the sky, including the famous Ursa Major, Ursa Minor, Scorpio and Orion. Constellations have different meanings and symbols in different cultures and historical periods. The brightest celestial body in the sky is a star. Stars are light sources. They emit light and heat and play an important role in the universe. In the starry sky at night, children can see some bright stars, such as Sirius, Vega and Yingying Gemini. Planets are also bright spots in the sky. They are celestial bodies revolving around the sun. Scientists can see some planets in the night sky, such as Venus, Jupiter and Saturn. The orbit and transformation of planets is also one of the important directions for astronomers to study. There are other celestial bodies in the sky, such as satellites, meteors and comets. Their characteristics and meanings are different, but they all show the mystery and beauty of the universe. In a word, the starry sky at night is a beautiful and complicated wonder of the universe, which brings people unlimited imagination and exploration fun.