James Webb Space Telescope discovers ultra-low-mass brown dwarfs in IC 348

The James Webb Space Telescope (JWST) has captured one of its largest images to date, providing a detailed panorama of the IC 348 star-forming region located approximately 1,000 light-years away in the Perseus constellation.

Astronomers using the telescope's NIRCam and NIRSpec instruments have discovered extremely low-mass brown dwarfs within this nebula. These objects, which occupy the mass range between the largest planets and the smallest stars, were found to be just twice the mass of Jupiter. This discovery is significant because it challenges existing theoretical models regarding the lower limits of the star-formation process.

Unlike true stars, which must reach at least 8% of the Sun's mass to fuse hydrogen, these brown dwarfs lack the mass to sustain such nuclear fusion. The research, involving teams from NASA, the ESA, and the CSA, also noted the presence of material disks around these objects, suggesting the potential for planetary formation around such small bodies.