James Webb Space Telescope Captures Haunting Cat’s Head Nebula Just in Time for Halloween

Photo credit: NASA/Chris Gunn
Far beyond ordinary sight, a towering filament of dust and gas has taken on the unmistakable outline of a cat sitting with its back turned. Astronomers call the structure the Cat’s Head Nebula, a compact formation nestled inside the much larger Carina Nebula roughly 7,500 light-years from Earth. Intense ultraviolet radiation and winds from massive nearby stars have spent ages carving the surrounding material, leaving denser pockets to resist the erosion and form the long, irregular pillar that now resembles a feline body, head, and downward tail.

NASA’s James Webb Space Telescope returned to the region on May 27th, 2026, using its Near-Infrared Camera and some extremely useful filters that allow light at a variety of wavelengths. The end result is a near-infrared image that reveals what is truly going on in this region, which would otherwise be obscured by the dust. In the center of the frame is a large orange-brown tendril that extends from the bottom to practically the top. Judging by its narrow wiggly shape and little head that turns right, suggested by a bright yellow glow that could easily be emanating from a brand new star still nestled up in the dust, I’d say this thing strongly resembles a cat. There are also some faint wispy strands visible to the left of this pillar, which are being blasted by the same radiation that is causing this nebula to shrink.

It’s a star-filled backdrop in there, with many of them visible as a blue and yellow haze, many of which are still dusty even at these infrared wavelengths. With the telescope’s clarity, it’s easy to see some very distant galaxies sitting well behind the nebula, providing us a view of what’s going on behind the Milky Way.

When we look at the same filament in a mid-infrared image captured by the telescope’s Mid-Infrared Instrument, we can see the orange-brown tendril again, but this time it’s a soft bluish-grey color, which is caused by warm dust and all those lovely carbon-based molecules that are emitting. This time, we can see the exquisitely detailed globules and threads much better, and there’s another bright yellow source right next to the pillar, most likely another young child star surrounded by a crimson glow.

Hubble’s earlier visible-light view of the identical region shows the same pillar as an opaque dark brown mass edged by a luminous yellow rim where ultraviolet light ionizes and gradually evaporates the gas. Colors shift from blue and cyan above to yellow, orange, and red below, produced by excited oxygen, hydrogen, sulfur, and scattered starlight. Together the two telescopes supply complementary records of a temporary structure that will eventually disperse as the stars within it continue to form and evolve. The Halloween release simply timed the public release of these records with a season that favors ghostly silhouettes rising from misty backgrounds.