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Four-panel full-color science comic. Panel 1: cartoon evolved star IRS 3 glowing near Sagittarius A-star. Panel 2: oxygen-rich silicate dust shells. Panel 3: first clear water detection in the envelope badge. Panel 4: layered shells spanning about 10,000 AU with temperatures from roughly 1200 K to 100 K.
Four panels: IRS 3 beside Sgr A*, O-rich silicate shells, first clear water badge, 1200K-to-100K layered envelope ~10,000 AU. · Comic: Topics / Drew’s Comic Newsroom. Source: ESA/Webb / NASA.

Science and Space

Webb finds dust and water surviving beside Sagittarius A*

What happened

ESA/Webb reports that the NASA/ESA/CSA James Webb Space Telescope’s Mid-Infrared Instrument (MIRI) delivered the most detailed mid-infrared view yet of the evolved asymptotic-giant-branch star IRS 3, located about 0.55 light-years from Sagittarius A*, the Milky Way’s central supermassive black hole. Analysing the star’s infrared light, the team identified clear signatures of oxygen-rich silicate dust and, for the first time, detected water in IRS 3’s surrounding envelope. The result shows that even under the harsh radiation near a supermassive black hole, an evolved star can still produce dust and other materials important for later generations of stars and planets.

Combining the MIRI spectrum with envelope models, researchers reconstruct a layered, shell-like dust distribution extending roughly 10,000 astronomical units from the star, with temperatures falling from approximately 1200 Kelvin close in to around 100 Kelvin in the outer regions. Stellar modelling puts IRS 3 at about six solar masses and roughly 72 million years old, undergoing intense mass loss that builds the extended envelope. The observations come from the Mid-Infrared Characterisation of Nearby Iconic galaxy Centres (MICONIC) Guaranteed Time Observations programme (#1266); results are published in Astronomy & Astrophysics (Peißker et al.). A companion NASA image article dated Sept. 10 highlights the same dust-and-water scene toward Sagittarius A*.

Science packages here prefer a measurable spectrum over a press-release adjective. MIRI, oxygen-rich silicates, first clear water, layered shells, and survival beside Sgr A* make the strip. Bright teal and infrared gold. White gutters. Not a claim that every galactic-centre model is wrong — a report that dust and water still show up this close in.

Why it matters

Readers get the instrument, the 0.55-light-year distance, the silicate chemistry, the first clear water detection, the ~10,000 AU shells, the ~1200 K to ~100 K temperature gradient, the ~6 M☉ / ~72 Myr estimates, the A&A paper, and the MICONIC GTO tag. Keep politics out. Keep the ESA/Webb URL on the page. Harsh radiation near a black hole does not automatically erase dust and water production — a clean Science slot: dated, sourced, and free of hype.

Conclusion

Webb MIRI shows oxygen-rich silicates and the first clear water in the envelope of IRS 3 only ~0.55 light-years from Sgr A*, with layered shells out to ~10,000 AU and temperatures from ~1200 K to ~100 K, per ESA/Webb and the A&A / MICONIC result. Source: https://esawebb.org/news/weic2617/

Source: ESA/Webb