JWST

Webb found Beta Pictoris d by reading its atmosphere's chemical fingerprint, a first for exoplanet discovery, while a separate imaging study independently confirmed it.

James Webb's NIRSpec spectrograph measured isotopic ratios in interstellar comet 3I/ATLAS as it left the inner solar system, pointing to an origin during the universe's 'cosmic noon.'

A 40-plus-line JWST spectrum of a gravitationally lensed little red dot, including a 16-line 'iron forest,' best fits a supermassive black hole cloaked in dense gas, astronomers report in The Astrophysical Journal.

A rotational-transit study in Nature Astronomy finds WASP-121 b's evening terminator is hotter and more expanded than its morning side, with upper-atmosphere water broken into its constituent atoms.

James Webb observations show Saturn's apparent spin change is driven by a feedback loop in which its aurora heats the atmosphere, generating winds and currents that sustain the aurora.

JWST has tracked the first complete daily cloud cycle on an exoplanet, finding that WASP-94Ab grows magnesium silicate clouds each morning and clears them each evening, while correcting a decade of skewed atmospheric measurements from Hubble.

Astronomers used JWST's MIRI to directly study the surface geology of LHS 3844 b, a super-Earth 48.5 light-years away, revealing a basaltic, atmosphere-free world resembling Mercury — a first for exoplanet science.

NASA's James Webb Space Telescope has characterized the atmosphere of TOI-199b, a Saturn-sized world 330 light-years away—the first temperate giant exoplanet studied in detail.

A Science Advances study using Webb data finds Nereid's icy composition rules out a Kuiper Belt origin, making it the sole intact remnant of Neptune's primordial moon system.

NIRSpec spectroscopy of COLA1 and NEPLA4 reveals black holes 400-800 times overmassive for their host galaxies, offering the first detailed look at the aftermath of early-universe quasar activity.

A UC Riverside-led team used the largest JWST observing program to trace galaxies along the cosmic web from today out to redshift z ~ 7, and released the full pipeline and catalog publicly.

A UC Davis-led team using JWST has measured the kinematics of XMM-VID1-2075 at redshift 3.45 and found no detectable rotation, a property previously seen only in mature nearby galaxies.