The Ghost Nebula glows in new photo just in time for a spooky Halloween

Nearly 550 light-years away lies the Ghost Nebula, which haunts the constellation Cassiopeia like a shadow. 

Named after a vain queen in Greek Mythology, the constellation Cassiopeia forms a highly-recognizable 'W' in the sky, with gigantic star Gamma Cassiopeiae marking the central point.

Radiation from...