星云的

You can see nebulae in the clear summer sky.

在晴朗的夏夜可以看到天上的星云。

A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌一簇美不胜收的花朵，一撮星云天体的蚁聚。

Explanation: Cosmic clouds of hydrogen gas and dust abound in this gorgeous skyscape, stretching through Monocerous in the neighborhood of The Cone Nebula.

在这张绚丽的天空美景中，充满了氢气和尘埃组成的宙星云，一直延伸到锥形星云附近的麒麟座内。

As our nebula began to collapse under its own gravity and spin faster, a dense clump of matter formed in the center. It's called a protostar.

当我们的星云在自作用下崩溃和更加快速地旋转时，星云中心形成了密集的物质块。这叫做原恒星。