James Webb Telescope Captures Lion Nebula (NGC 2392) in Infrared Detail

The Lion Nebula, known as NGC 2392, has been captured in images by NASA's James Webb Space Telescope utilizing its NIRCam and MIRI instruments. This planetary nebula's resemblance to a lion arises from the outer layers expelled by a dying star transitioning into a white dwarf, which leaves a dense core behind. In the images, the bright center resembles a small nose. NASA indicates that the central star's intense heat causes its radiation to "cook" surrounding materials, creating a bubble of ionized hydrogen gas that outlines the lion's "face," featuring shells and rings that disrupt dust. The "mane" is illuminated by the stellar core within one shell. Mid-infrared observations reveal diverse dust structures, with some being obliterated by radiation while others persist. NASA emphasizes that it took several thousand years for the gas and dust to reach this state, and the material continues to evolve as the star pushes it outward. Although nebulae seem unchanging over human timescales, the Lion Nebula is rapidly evolving in astronomical terms, with estimates suggesting it will completely disperse in about 10,000 years. This discovery adds to Webb's impressive list of targets, which includes the Horsehead Nebula and the "Pillars of Creation."