Science & Tech · Space · 10 hrs ago
JWST finds unusually low-mass brown dwarfs in star-forming nebula
The James Webb Space Telescope found record-low-mass brown dwarfs in IC 348, a star-forming nebula about 1,000 light-years away in the constellation Perseus.
Brown dwarfs are objects that do not have enough mass to become stars.
JWST’s infrared instruments can detect faint, cool objects that are difficult to see among the bright stars and dust in a nebula.
The observations revealed objects below the expected mass threshold predicted by theoretical calculations.
This finding offers new evidence about how small objects can form alongside stars.
The observations do not establish what happens next to these objects.
JWST observations of the star-forming nebula IC 348 have revealed brown dwarfs with masses below the threshold predicted by theoretical calculations.
The objects are described as the smallest and coolest stellar-like objects found so far.
IC 348 is about 1,000 light-years away in the constellation Perseus.
JWST’s infrared sensitivity, light-gathering power and resolution make faint, low-mass objects visible among the brighter stars.
The nebula contains many sub-stellar objects, including brown dwarfs and super-Jupiters.
- Who
- Researchers using the James Webb Space Telescope (JWST).
- What
- They found brown dwarfs in IC 348 with masses below the threshold predicted by theoretical calculations.
- When
- The article was published on November 9, 2026; the observation date is not stated.
- Where
- The star-forming nebula IC 348, about 1,000 light-years away in the constellation Perseus.
- Why
- JWST’s infrared sensitivity, light-gathering power and resolution reveal faint, low-mass objects.
This story does not have two clearly opposing sides.
This story does not have a timeline yet.
- Nebula
- IC 348
- Distance
- About 1,000 light-years
- Constellation
- Perseus
- Telescope
- James Webb Space Telescope (JWST)
- Publication date
- November 9, 2026