Hubble and Webb Reveal Different Faces of the Cat’s Head Nebula

NASA released new views of a feature nicknamed the Cat’s Head Nebula on October 29, 2026, combining observations made by the Hubble Space Telescope and the James Webb Space Telescope. The feature lies within the much larger Carina Nebula, a star-forming region roughly 7,500 light-years from Earth. The informal name refers to the shape of a dust structure, not to a separately catalogued nebula.

Hubble observes predominantly visible light and depicts a dark, elongated pillar of dust against glowing material. A bright point resembling an eye may be a young star embedded within the cloud, although that identification is not certain. Webb adds infrared views that reveal features obscured at visible wavelengths, as well as stars and structures elsewhere in the field.

The comparison matters because dust simultaneously conceals and records the activity of star formation. Dense clouds can block visible light from emerging stars, while infrared observations can penetrate some of that material or trace the glow of warmer dust. No single wavelength gives a complete picture. By comparing the images, researchers can study how radiation, gas and dust interact as new stars take shape.

The released observations are not photographs of a sudden event on October 29. They are processed astronomical measurements presented together on that date, and their colours represent light collected through specific filters. Their purpose is to reveal structures and physical processes that would otherwise be difficult to examine.

The Carina Nebula contains numerous active star-forming sites, but different images of Carina can show entirely different regions. The contextual image accompanying this report depicts other structures in Carina observed with Webb; it is not the newly released Cat’s Head field. The new Hubble-Webb comparison illustrates how combining observatories can sharpen questions about where stars form and how their environments evolve.