The Discovery

NASA's James Webb Space Telescope has taken new infrared images of NGC 2392, the planetary nebula nicknamed the Lion Nebula. [NASA's release](https://science.nasa.gov/missions/webb/lion-nebula-roars-to-life-with-nasas-webb/) combines observations from Webb's NIRCam and MIRI instruments to expose dust clumps, ionized gas, rings, and shells in sharper detail.

The lion-like face is a bubble of ionized gas powered by the hot white dwarf at its center. That star is the surviving core of a lower-mass star that shed its outer layers after nuclear reactions ceased sustaining it.

What Makes It Strange

The dying core is destroying dust in the expanding gas bubble, yet compact clumps survive its radiation. Those clumps shield material behind them, producing comet-like tails across the nebula's outer mane.

Rings and shells crowd the swept-up gas, and astronomers are still working to explain why planetary nebulae so often develop these complex structures. Webb is not showing a static monument; it is catching a stellar remains field while radiation remakes it.

What Happens Next

Gas and dust will continue moving away from the white dwarf. NASA reports that astronomers estimate the recognizable lion will disperse in about 10,000 years.

That sounds ancient on a human clock and brief on a cosmic one. Webb's image preserves one frame of a death scene that is already dissolving.