galactics

例句：

1. 1.The Milky Way is a famous galaxy in the night sky.
   银河是夜空中著名的星系。
2. 2.The nebula glows with a soft blue light.
   这个星云发出柔和的蓝色光芒。
3. 3. Galactic exploration has led to many discoveries.
   银河探索已经导致了许多发现。