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Summary
| Description |
English: Astronomers used the James Webb Space Telescope to directly image 29 Cygni b, which weighs 15 times Jupiter. They found evidence for heavy chemical elements like carbon and oxygen, which strongly suggests it formed like a planet by accretion within a protoplanetary disc, and not like a star through fragmentation.
Webb’s NIRCam (Near-Infrared Camera) was used in its coronagraphic mode, in which a wedge (indicated by the blue box) is used to block the light of the host star (labeled A and marked with a star symbol) to reveal the planet. This image combines light from three filters between 4 and 5 microns. The planet is brightest in the blue filter, then green, then red, so it appears as an off-white dot in the colour composite. If carbon dioxide weren’t present, the planet would appear noticeably redder. In this image, the colour blue is assigned to 4.1 micron light, green to 4.3 micron light, and red to 4.6 micron light. Credits: NASA, ESA, CSA, W. Balmer (JHU, STScI), L. Pueyo (STScI). Image processing: A. Pagan (STScI); CC BY 4.0 |
| Date | Taken on 14 April 2026, 18:09:56 |
| Source | Webb redefines dividing line between planets and stars |
| Author | europeanspaceagency |
| Flickr set | Webb |
| Flickr tags | esawebb; jameswebbspacespacetelescope; canadianspaceagency; europeanspaceagency; jameswebb; exoplanet; cosmos; space; spacescience; csa; esa; nasa; universe; science; webbesa; webb; 29cygnib; jwst |
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This image was originally posted to Flickr by europeanspaceagency at https://flickr.com/photos/37472264@N04/55207533974. It was reviewed on 15 April 2026 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-4.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:10, 15 April 2026 | | 2,000 × 2,000 (431 KB) | OptimusPrimeBot | #Spacemedia - Upload of https://live.staticflickr.com/65535/55207533974_b5a1af6781_o.jpg via Commons:Spacemedia |
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