JWST Observer is managed by STScI and provides astronomers with the most up-to-date information, news, and events related to observing with JWST.

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Joined January 2012
JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope20 Nov 2023
The latest image from #NASAWebb reveals the Sagittarius C region of our Milky Way galaxy’s dense center in unprecedented detail, including never-before-seen features astronomers can’t yet explain: webbtelescope.pub/47izkkm
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope30 Oct 2023
Proof that light can play an important role in highlighting some of your best features: #NASAWebb has observed the Crab Nebula, a well-studied supernova remnant located 6,500 light-years away. What does infrared light reveal? webbtelescope.pub/46Q8Pmf
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope19 Oct 2023
Using its infrared view, #NASAWebb has discovered a never-before-seen jet stream—with winds rivaling a Category 5 hurricane on Earth—over Jupiter’s equator: webbtelescope.pub/3rLO7ov
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope10 Oct 2023
Boat or bird in flight? #NASAWebb’s new mid-infrared image of NGC 346 resembles many things. Mid-infrared light highlights dusty and sooty molecules (shown in blue) as well as warm dust (pink) and clumps of protostars (bright patches): webbtelescope.pub/46FAKoB
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope3 Oct 2023
The dynamic duo! By combining the #NASAWebb and Hubble data of galaxy pair VV 191, scientists traced the light emitted by the elliptical galaxy (left) through its spiral galaxy companion (right)—learning about interstellar dust along the way: webbtelescope.pub/3EFqUXN
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope14 Sep 2023
#NASAWebb’s high-resolution look at energetic outflows from a newly forming star is not just stunning, but illuminating. Shock waves are created when the outflows collide with interstellar gas and dust: webbtelescope.pub/3Lm9pQ5
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope13 Sep 2023
#NASAWebb recently took a look at irregular galaxy NGC 6822, using its instruments to observe different components of the galaxy. NGC 6822 was first discovered by E. E. Barnard, who presented his discovery in a very brief paper in 1884. Credit: ESA.
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope11 Sep 2023
The First Year of JWST Science Conference kicked off today at STScI. Hear from scientists from around the world as they share how #NASAWebb is changing our understanding of the early universe: youtube.com/watch?v=pAPeLRl5… #JWSTYearOne
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope11 Sep 2023
Scientists using #NASAWebb have found an abundance of methane and carbon dioxide in the exoplanet K2-18 b’s atmosphere. With a shortage of ammonia, these results are consistent with the presence of an ocean underneath a hydrogen-rich atmosphere: webbtelescope.pub/3r1yWHa
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope31 Aug 2023
A new image of the iconic Supernova 1987A by #NASAWebb reveals newly discovered crescent-like structures, which border the keyhole-shaped cloud of gas in the center of this supernova. Learn what led to these bright structures: webbtelescope.pub/3R8C66u #UnfoldtheUniverse
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope30 Aug 2023
These red and white swirls belong to a galaxy you’ve likely seen several times—but never like this. #NASAWebb peeked at the Whirlpool Galaxy and sent back this complex image of filaments of dust grains and molecules circling a bright core: esawebb.org/images/potm2308c…
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope9 Aug 2023
#NASAWebb has revealed more insights into the farthest star ever detected—Earendel, which existed within the first billion years after the universe’s birth in the big bang: webbtelescope.pub/3qgEPQq
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope9 Aug 2023
Spotting, and confirming, the distance of the star is just the beginning, though. That’s where #NASAWebb comes in. Webb’s initial observations of Earendel have revealed insights into the star’s type, and even the galaxy surrounding the star. (2/3)
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope9 Aug 2023
Detecting extremely distant stars can provide insights into the first few chapters of the history of our universe. In 2022, Hubble broke its own record, and spotted the most distant star yet. Earendel emitted its light within the universe’s first billion years. (1/3) 🧵
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope2 Aug 2023
By comparing #NASAWebb’s view of the El Gordo galaxy cluster to Hubble’s, we see how many galaxies and other features, previously hinted at or entirely unseen, pop into view. Can you spot a red “fishhook”? How about a mirror image galaxy pair? webbtelescope.pub/3KiWX30
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope26 Jul 2023
#NASAWebb has captured a highly detailed portrait of two actively forming stars. Known as Herbig-Haro 46/47, they periodically ingest the gas and dust immediately surrounding them and periodically launch two-sided jets. Explore this scene: webbtelescope.pub/43yvv88
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope24 Jul 2023
Scientists using #NASAWebb have found water vapor in the inner disk of the star PDS 70. The finding shows that a water reservoir is available for terrestrial planets that might be coalescing there: webbtelescope.pub/43u2mep
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope6 Jul 2023
Most distant supermassive black hole? ✔️ Two more extremely distant black holes? ✔️ Eleven extremely distant galaxies? ✔️ New data from #NASAWebb is flooding astronomers with discoveries, including black holes that are less massive: webbtelescope.pub/3CX0Hms
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JWST Observer retweeted
Space Telescope Science Institute@SpaceTelescope30 Jun 2023
The *original* ringed planet reigns supreme with #NASAWebb. Saturn appears dark in this image because methane gas absorbs almost all the sunlight falling on the atmosphere at this infrared wavelength. But its iconic rings are brilliantly bright: webbtelescope.pub/44nXE2p
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