CSA

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…

SScience

Webb Detects Hydrogen Sulfide Gas on Three Super-Jupiters

February 16, 2026

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have for the first time identified hydrogen sulfide gas in…

SScience

Hydrocarbons play a key role in shaping the chemistry of the interstellar medium, but their enrichment and relation with carbonaceous grains and polycyclic aromatic hydrocarbons still lack clear observational constraints. García-Bernete et al. report on the Webb infrared observations of the local ultra-luminous infrared galaxy (ULIRG) IRAS 07251-0248, which revealed the extragalactic detection of small gas-phase hydrocarbons. Image credit: García-Bernete et al., doi: 10.1038/s41550-025-02750-0.

February 8, 2026

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have uncovered an unprecedented richness of small gas-phase hydrocarbons —…

SScience

Webb Peers Deep into Iconic Helix Nebula

January 21, 2026

The new infrared image from the NASA/ESA/CSA James Webb Space Telescope reveals the complex structure of gas and…

PPhysics

Little red dots are young supermassive black holes in dense ionized cocoons. Image credit: NASA / ESA / CSA / Webb / Rusakov et al., doi: 10.1038/s41586-025-09900-4.

January 16, 2026

Astrophysicists at the University of Copenhagen show that the enigmatic ‘little red dots’ — red sources scattered across…

SSpace

This artist’s concept shows what PSR J2322-2650b may look like. Image credit: NASA / ESA / CSA / Ralf Crawford, STScI.

December 17, 2025

PSR J2322-2650b, an enigmatic Jupiter-mass exoplanet orbiting the millisecond pulsar PSR J2322-2650, appears to have an exotic helium-and-carbon-dominated…

SSpace

Astronomers Find Direct Evidence for Supermassive Stars in Early Universe

December 16, 2025

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have discovered chemical fingerprints of primordial stars weighing between 1,000…

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

Webb Detects Hydrogen Sulfide Gas on Three Super-Jupiters

Webb Detects Unexpected Richness of Hydrocarbons in Obscured Core of Nearby Ultra-Luminous Galaxy

Webb Peers Deep into Iconic Helix Nebula

Early Universe’s ‘Little Red Dots’ Are Young Supermassive Black Holes, Astrophysicists Say

Webb Detects Exotic Helium-and-Carbon-Rich Atmosphere around Pulsar-Orbiting Exoplanet

Astronomers Find Direct Evidence for Supermassive Stars in Early Universe