Tag Archive for 'NIRISS'

An artist’s impression of the exoplanet WASP-107b. Image credit: University of Geneva / NCCR PlanetS / Thibaut Roger.

Webb Detects Giant Clouds of Helium Leaking from WASP-107b

Dec 1, 2025 by News Staff

Using high-precision spectroscopic observations from the Near Infrared Imager and Slitless Spectrograph (NIRISS) onboard the NASA/ESA/CSA James Webb Space...

The hot-Jupiter WASP-18b. Image credit: NASA’s Goddard Space Flight Center.

Astronomers Create 3D Temperature Map of Hot-Jupiter WASP-18b

Oct 28, 2025 by News Staff

The new map of WASP-18b, a hot-Jupiter exoplanet located approximately 325 light-years from Earth, reveals an atmosphere with distinct temperature zones...

The galaxy cluster MACS-J0417.5-1154 is so massive it is warping the fabric of space-time and distorting the appearance of galaxies behind it, an effect known as gravitational lensing. This natural phenomenon magnifies distant galaxies and can also make them appear in an image multiple times, as Webb saw here. Two distant, interacting galaxies -- a face-on spiral and a dusty red galaxy seen from the side -- appear multiple times, tracing a familiar shape across the sky. Active star formation, and the face-on galaxy’s remarkably intact spiral shape, indicate that these galaxies’ interaction is just beginning. Image credit: NASA / ESA / CSA / STScI / V. Estrada-Carpenter, Saint Mary’s University.

Webb Spots Distorted Galaxy Forming Cosmic Question Mark

Sep 5, 2024 by News Staff

It’s 7 billion years ago, and the Universe’s heyday of star formation is beginning to slow. What might our Milky Way Galaxy have looked like at that...

At an estimated mass of 5 Jupiter masses, NIRISS-NGC1333-5 (also known as NN5) is a good candidate to be the lowest-mass object found in NGC 1333 thus far and the lowest-mass object with a disk in any region identified to date. Image credit: Langeveld et al., doi: 10.3847/1538-3881/ad6f0c.

Webb Discovers Six Free-Floating Exoplanets in NGC 1333

Aug 27, 2024 by News Staff

Using the Near-Infrared Imager and Slitless Spectrograph (NIRISS) instrument on the NASA/ESA/CSA James Webb Space Telescope, astronomers have discovered...

WASP-96b periodically transits WASP-96 (also known as 2MASS J00041112-4721382), a Sun-like star 980 light years away in the southern constellation Phoenix. Image credit: © Sci-News.com.

Webb Captures Most Detailed Spectrum of Exoplanet Atmosphere to Date

Jul 13, 2022 by News Staff

The NASA/ESA/CSA James Webb Space Telescope has captured the distinct signature of water, along with evidence for clouds and haze, in the atmosphere surrounding...