A massive photograph from the James Webb Space Telescope has arrived, revealing a star factory and odd objects that test our definition of what a star is. The picture centers on IC 348, a place where stars take shape some 1,000 light-years away within the constellation Perseus. It was posted online on Sept. 15, 2026.
The nursery’s crowded center
IC 348 is one of the closest stellar nurseries to Earth. In this near-infrared image, it appears as an intricate landscape of stars, glowing material, and sweeping clouds of gas and dust. Young stars punctuate the dark and luminous clouds, with the concentration greatest around the center.
Bright stars show JWST’s distinctive diffraction spikes — a result of the telescope’s optical structure. In the upper-right of the image, still-forming protostars launch streams of material.
Brown dwarfs and failed stars
The range of stars varies widely by shape and size. Some are enormous and blow apart as supernovas after just a few million years, while others are the tiniest and most widespread stars, red dwarfs, which endure for many billions of years. Sitting between these two extremes is a group of objects known as brown dwarfs — objects that fall somewhere between giant gas planets, such as Jupiter, and true stars.
These strange objects begin much like ordinary stars do, from clouds of dust and gas that collapse inward due to their own gravitational pull. But while stars continue heating up until they begin fusing hydrogen into helium, the cores of brown dwarfs never reach a temperature high enough for that fusion to start. This batch of brown dwarfs imaged by JWST gives scientists a chance to work out how small these objects can possibly be.
The hunt for the tiniest objects
In the hunt for tiny brown dwarfs in IC 348, researchers used Webb’s NIRCam instrument in 2024 to survey part of the region. They found 39 brown dwarf candidates. The following year, Webb’s NIRSpec instrument studied the light of 15 of them.
Nine new substellar members of the cluster were identified, and among them the faintest is estimated to have masses of around two Jupiters, which makes it one of the least massive brown dwarfs ever found.
Scientists still do not know how tiny a brown dwarf can become.
Jets and X-rays in the nursery
In the top-right part of the panorama, a more youthful phase of star formation is on display. Buried within the dusty surroundings, young stars send forth powerful jets into the surrounding gas and dust, giving rise to bright, eye-catching streams called Herbig-Haro objects. These immense jets can extend trillions of miles through space.
Just one tiny detail in one of JWST’s biggest images yet.
The nursery has also been detected at other frequencies. The Chandra Observatory recently took a picture of IC 348, capturing the stellar nursery alongside other cosmic objects glowing a brilliant purple in X-ray light.
The scale of the discovery
Here is a quick rundown of the key facts:
| Detail | Fact |
|---|---|
| Object | IC 348, a star-forming reflection nebula |
| Distance | 1,000 light-years away in Perseus |
| Image shared | Sept. 15, 2026 |
| Survey instrument | NIRCam (2024) |
| Follow-up instrument | NIRSpec |
| Brown dwarf candidates found | 39 |
| Confirmed new substellar members | 9 |
| Least massive brown dwarf mass | Around two Jupiters |
The picture brings together the fine detail of JWST’s tools with the vast size of a far-off nursery, letting viewers see both individual stars and sweeping clouds of dust at once.
Source material: “James Webb telescope shares one of its biggest images ever, with record-breaking stars hiding in the dust,” Live Science.
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