Stardust passed through a cloud of material surrounding comet Wild Two in January of two thousand four.

VOA: special.2009.09.30

Air traffic over much of Europe came to a halt for six days because of the huge cloud of ash from a volcano in Iceland.

VOA: special.2010.04.23

A big cloud of smoke rose high in the air over Fort Sumter.

VOA: special.2009.08.13

It shows a man at a typewriter and above his head, taking up more than half of the canvas and appearing in a purple cloud, is frontiersman Daniel Boone, wearing his coonskin cap and carrying his long rifle.

VOA: standard.2010.08.09