“Boo! See the universe’s spookiest sights in time for Halloween”

Key points

• Exposed cranium nebula shows brainlike star death phases and hydrogen ejection.
• Ghost of Cassiopea emits red glow from hydrogen and ultraviolet radiation.
• Red Spider Nebula features filaments of hydrogen forming spider legs.
• Cat's Head Nebula within Carina Nebula resembles a cat with a red eye.
• Phantom galaxy, 32 million light-years away, appears as a dim portal-like spiral.