CSA

This Webb image shows the highly distorted red galaxy MRG-M0138 seen through a foreground cluster of galaxies (white sources). Image credit: NASA / ESA / CSA / Webb.

June 6, 2026

A supermassive black hole 6 billion times the mass of the Sun lurks in MRG-M0138, a gravitationally lensed…

Webb Detects Methane on Interstellar Comet 3I/ATLAS

June 2, 2026

Using the spectral data from the Mid-Infrared Instrument (MIRI) onboard the NASA/ESA/CSA James Webb Space Telescope, astronomers have…

SScience

Webb Detects Methane in Atmosphere of Exo-Saturn TOI-199b

May 25, 2026

Using spectral data from the Near-Infrared Spectrograph (NIRSpec) onboard the NASA/ESA/CSA James Webb Space Telescope, astronomers analyzed the…

SSpace

$This image of Messier 77 from Webb’s Mid-Infrared Instrument (MIRI) highlights its swirling spiral arms, the dust in its disk and its piercingly bright core like never before. The bright orange lines appearing to radiate out from the galaxy’s center are not actually a feature of the galaxy: they are a type of distortion that arises from the optical design of the telescope. Called diffraction spikes, they are created because the intense light from the unresolved AGN is bent (diffracted) very slightly at the edges of Webb’s hexagonal mirror panels and around one of the struts that hold up its secondary mirror. Image credit: NASA / ESA / CSA / Webb / A. Leroy.$

May 13, 2026

New images from the NASA/ESA/CSA James Webb Space Telescope capture the barred spiral galaxy Messier 77 as a…

SScience

This Webb/NIRSpec/IFU image shows the slow-rotator galaxy XMM-VID1-2075. Image credit: Forrest et al., doi: 10.1038/s41550-026-02855-0.

May 5, 2026

In today’s Universe, most galaxies are held together by orderly rotation. But among the largest, no-longer star-forming systems,…

SScience

An artist’s impression of Epsilon Indi Ab with water clouds atop its ammonia-dominated atmosphere. Image credit: E.C. Matthews, MPIA / T. Müller, HdA.

April 24, 2026

Using the NASA/ESA/CSA James Webb Space Telescope, astronomers have detected water-ice clouds swirling through the atmosphere of Epsilon…

SScience

These Webb (left) and Hubble (right) images reveal Saturn in infrared and visible light. Image credit: NASA / ESA / CSA / STScI / A. Simon, NASA-GSFC / M. Wong, University of California / J. DePasquale, STScI.

March 27, 2026

By combining infrared observations from the NASA/ESA/CSA James Webb Space Telescope with visible-light imagery from the NASA/ESA Hubble…

SScience

Webb captured the auroral footprints of Io and Europa, providing spectral measurements for the first time, and revealing extreme changes in the physical properties within Io’s auroral footprint that are likely linked to the electrons crashing into the top of Jupiter’s atmosphere. Image credit: NASA / ESA / CSA / Webb / NIRCam / Jupiter ERS Team / Judy Schmidt / Katie L. Knowles, Northumbria University.

March 6, 2026

The NASA/ESA/CSA James Webb Space Telescope conducted a clockwise scan around the entire limb of Jupiter, chasing aurora…

SScience

These Webb images show PMR 1, a planetary nebula some 5,000 light-years away in the constellation of Vela. Image credit: NASA / ESA / CSA / STScI / Joseph DePasquale, STScI.

February 28, 2026

The unmatched sensitivity of the NASA/ESA/CSA James Webb Space Telescope in both near- and mid-infrared light sheds new…

SScience

This Webb image shows NGC 5134, a spiral galaxy some 65 million light-years away in the constellation of Virgo. Image credit: NASA / ESA / CSA / Webb / A. Leroy.

February 24, 2026

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have produced a spectacular infrared image of the spiral galaxy…

SScience

The main image at left shows a combined Webb and Hubble view of the spiral galaxy NGC 1637, with the region of interest in the top right; the remaining three panels show a detailed view of a red supergiant star before and after it exploded; the star is not visible in the Hubble image before the SN 2025pht explosion, but appears in the Webb image; the July 2025 view from Hubble shows the glowing aftermath of the explosion. Image credit: NASA / ESA / CSA / STScI / C. Kilpatrick, Northwestern / A. Suresh, Northwestern / J. DePasquale, STScI.

February 23, 2026

Using the NASA/ESA/CSA James Webb Space Telescope, astronomers have for the first time identified the progenitor of a…

SScience

Tiranti et al. mapped the vertical structure of Uranus’ upper atmosphere, uncovering how temperature and charged particles vary with height across the planet. Image credit: NASA / ESA / CSA / Webb / STScI / P. Tiranti / H. Melin / M. Zamani, ESA & Webb.

February 21, 2026

For the first time, astronomers have mapped the vertical structure of Uranus’ ionosphere, uncovering unexpected temperature peaks, weakened…

Webb Weighs Most Distant Inactive Black Hole Ever Found

Webb Detects Methane on Interstellar Comet 3I/ATLAS

Webb Detects Methane in Atmosphere of Exo-Saturn TOI-199b

Webb Peers into Brilliant Heart of Messier 77

Webb Discovers Slow-Rotating Galaxy in Early Universe

Webb and Hubble Telescopes Capture Saturn in Unprecedented Detail

Webb Captures Io’s and Europa’s Auroral Footprints in Jupiter’s Atmosphere

Webb’s Infrared Vision Reveals Planetary Nebula that Looks Strikingly Like Celestial Brain

Webb Focuses on Spiraling Star Factory: NGC 5134

Webb Identifies Supernova Progenitor Star in NGC 1637

Webb Reveals Hidden Layers of Uranus’ Upper Atmosphere