The nebula is rosebud-shaped; the young stars have blown a large, oddly shaped bubble in the molecular cloud that once surrounded them at their birth.

The rosy pink color comes from glowing dust grains on the surface of the bubble being heated by the intense light from the young stars within.

The ultra-violet and visible light produced by the young stars is absorbed by the surrounding dust grains.

They are heated by this process and release the energy at longer infrared wavelengths as photographed by the Spitzer Space Telescope.

The reddish colors in the false-colour infrared image suggest the distribution of hydrocarbon rich molecular material.