It is surrounded by dark dust clouds, including LDN 1450 near the center of the image and B205 at upper right. This is an example of dark nebulae silhouetted by a starry field.

Nicknamed the "Giant Dark Cloud," scientists first noticed that feature in data gathered by an infrared camera aboard the Japanese spacecraft Akatsuki, which has been orbiting Venus since 2015.

Barnard correctly argued that this appearance was due to “obscuring matter in space.” We know today that these dark markings are actually clouds of interstellar gas and dust grains.

Stock image of a very dark cloud over a city. Istanbul was thrust into darkness on Tuesday as a heavy cloud rolled over the city, nearly blocking out the sun entirely for around 5 minutes.

Rare clouds located on the edge of space have been spotted in the night skies over Washington state. Noctilucent clouds, silvery-blue tendrils that glow in the dark, are the rarest and highest ...

Clouds can also appear to have different hues, especially ahead of a really intense storm. Learn more about that in this week’s Heather’s Weather Whys.