The space Caterpillar

This stunning Hubble image shows a small cloud known as a Bok globule, which Hubble scientists nicknamed the "caterpillar." Its glowing edge indicates that it is being photoionized by the hottest stars in the cluster. It has been hypothesized that stars may form inside such dusty cocoons. The top of the Keyhole Nebula, the most prominent feature embedded inside Carina, is on the left with another Bok globule is in the foreground.

Credit: Hubble, NASA.