Brief
Webb Telescope Finds Brown Dwarfs at Twice Jupiter's Mass in IC 348
NASA's James Webb Space Telescope has captured a large image of the star-forming region IC 348. Astronomers used it to search for brown dwarfs and discovered some with masses only twice that of Jupiter.
NASA’s James Webb Space Telescope has produced a detailed view of IC 348, a nearby star-forming region. The image is among the largest released from Webb to date. Astronomers used Webb to search this region for brown dwarfs, which are less massive than the smallest stars. They discovered brown dwarfs with masses just twice that of Jupiter.
Our reading
Our reading is that this discovery suggests brown dwarfs can form with masses comparable to giant planets, though the brief announcement does not detail how these objects formed or how certain the mass measurements are.
What to do or watch
The precise unresolved question is how these brown dwarfs with masses twice that of Jupiter formed and how certain the mass measurements are, since the announcement does not detail either.
Source details and supporting facts
Each line is stated by the page named above it.
Stated by NASA
- This starry view of the nearby star-forming region IC 348 is one of the largest images released to date from NASA’s James Webb Space Telescope.
- Using Webb, astronomers searched IC 348 for brown dwarfs, which are less massive than the smallest stars.
- The researchers discovered brown dwarfs just twice the mass of Jupiter.
Sources
- NASAText stored 15 September 2026
How this story was checked. Written from the 1 page listed above, stored 15 September 2026; claims checked against that stored text on 15 September 2026.
What that means
- 3 of 3 reported statements were confirmed against the page that carries them; the rest were removed rather than published.
- Figures in the text were required to appear in the stored source text: yes. Identifiers: yes.
- The check reads stored text only: no claim rests on a fresh look that did not happen.
- Where the reporting was silent, the text says so instead of filling the gap.