James Webb Lion Nebula image showing central star’s remains with NIRCam and MIRI instruments.

James Webb Telescope Reveals the Lion Nebula’s Dazzling Cosmic Transformation

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Written by John Oliver

2026-10-19

NASA’s James Webb Space Telescope continues to revolutionize our view of the universe, this time with stunning images of the Lion Nebula (NGC 2392). Captured through the telescope’s NIRCam and MIRI instruments, the images reveal the intricate beauty formed by the remains of a dying star, currently in the white dwarf phase. This celestial event showcases a dense stellar core shedding its outer layers.

The Beauty of the Nebula

The nebula’s core radiates intensely, creating a striking visual known as a “bubble of ionized hydrogen gas.” Described by NASA, this bubble forms the “face” of the Lion, highlighted by expanding shells and rings that eradicate dust in their path. Meanwhile, the so-called lion’s “mane” is illuminated from within, offering a view into the star’s brilliant core.

For a deeper understanding of celestial transformations, discover the young exoplanet Elias 2-24 b and its unique characteristics.

James Webb Telescope mid-infrared image highlights dust structures of the Lion Nebula.
NASA’s James Webb Space Telescope’s mid-infrared image of planetary nebula NGC 2392, nicknamed the Lion Nebula, highlights the varying dust structures. Some dust is being destroyed by the dying central star’s radiation, while some dust filaments manage to survive.

Though from our human perspective, the nebula’s evolution seems gradual, in astronomical terms, it undergoes rapid transformation. Over several thousand years, the gas and dust have taken their current form. According to NASA, this planetary nebula is estimated to completely disperse in about 10,000 years, marking a spectacular yet temporary cosmic phenomenon (via Kottke).

Bright, colorful gas formations dominate the image of the Lion Nebula.
Planetary nebula NGC 2392, the Lion Nebula
Detailed view of the Lion Nebula with prominent planetary features.
Planetary nebula NGC 2392, the Lion Nebula
James Webb Lion Nebula image showing central star’s remains with NIRCam and MIRI instruments.
NASA’s James Webb Space Telescope imaged the planetary nebula NGC 2392, the Lion Nebula, using the observatory’s NIRCam and MIRI instruments. The central star’s remains are responsible for the nebula’s structure, including a lion face-shaped bubble of ionized gas and dust “mane.” All images courtesy of NASA, ESA, CSA, STScI

Source: thisiscolossal.com

Frequently asked questions

What instruments did the James Webb Telescope use to capture the Lion Nebula?

The James Webb Space Telescope used its NIRCam and MIRI instruments to capture images of the Lion Nebula.

What is happening to the star in the Lion Nebula?

The star in the Lion Nebula is in the white dwarf phase, shedding its outer layers as it creates formations like a bubble of ionized hydrogen gas.

How long is the Lion Nebula expected to last?

The Lion Nebula is estimated to completely disperse in about 10,000 years, marking a temporary yet spectacular cosmic phenomenon.

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