Like most spiral galaxies, the disk of this galaxy filled is with dark clouds of dust. (atlasoftheuniverse.com)
Never a good sign when there's a giant, dark cloud hanging over a movie that's about to open. (lights-camera-jackson.com)
Looking out my window, although there is no precipitation happening right now, there are dark clouds in the west, and the forecast is for precipitation beginning shortly and continuing all day. (sbnation.com)