This composite image of the star cluster NGC 28 contains X-ray data from Chandra, in purple, with infrared observations from Spitzer, in red, green, blue. NGC 281 is known informally as the Pacman Nebula because of its appearance in optical images.

NASA Wide-field Infrared Survey Explorer observed the star-forming cloud NGC 281 in the constellation of Cassiopeia as it appears to be chomping through the cosmos, earning it the nickname the Pacman nebula.