levels of celestial universe

例句：

1. 1.The stars in the sky are a wonder to behold.
   夜空中的星星是一种令人惊叹的景象。
2. 2.The celestial bodies orbit around the sun.
   天体围绕太阳运行。
3. 3.The celestial bodies are composed of gas and dust.
   天体由气体和尘埃组成。