... Dark Bok Globules in IC 2944 . ... Credit: David Malin, Anglo Australian Observartory Explanation: The dark spots in the above picture are not photographic defects but an unusual type of interstellar cloud known as a Bok globule . Bok globules, named after astronomer Bart Bok who studied them extensively, are small dark clouds made of gas and dust that are typically condensing to form a star or stars . ... Publications with keywords: bok globule - globule - IC 2944 . ... A Dust Cloud in NGC 281 . ...