A lenticularis cloud is floating in the sky, looking just like a spaceship.

Beautiful altocumulus clouds were floating in the sky.

Beautiful cirrus clouds were floating in the sky.

Beautiful cirrus clouds were floating in the sky.

The first time I saw a noctilucent cloud, it felt like I was dreaming.

Beautiful scale clouds were spread across the sky.

Beautiful cirrus clouds were floating in the sky.

Thin clouds are floating in the sky.

When the volcano erupted, a glowing cloud covered the sky.

He trembled in fear at the sight of the mushroom cloud in the distance.