Astronomers studying star formation often map dark nebulae to identify regions where protostars are emerging.

At night, the dark factories along the river hummed like sleeping giants.

The dark-lanthorns at the edge of the moor flickered as the fog rolled in.

As the Dark Knight slipped through the shadowed alley, he prepared to intercept anyone who threatened the peace of the neighborhood.

As a dark tourist, she visited the abandoned hospital to learn about its tragic past.

Dark tourists often visit sites of tragedy to learn about history and remember the victims.

Theoretical models predict that a dark star could grow to be hundreds of times the mass of the Sun before nuclear fusion begins.

I didn't know the answer, so I decided to take a shot in the dark and guess.

The delivery truck arrived at oh dark thirty, forcing me out of bed far too early.

Although difficult to detect, baryonic dark matter can influence galaxy rotation through its gravitational pull.