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#spectroscopy

All Space Telescope Blog posts tagged spectroscopy.

Artist's impression of ultra-hot Jupiter exoplanet WASP-121 b (Tylos) orbiting its host star, with banded atmosphere in red, yellow and orange.

JWST Unveils Atmospheric Asymmetry on Ultra-Hot Jupiter WASP-121 b

The James Webb Space Telescope's NIRSpec reveals significant temperature differences between the evening and morning terminators of ultra-ho...

Jun 14, 2026 2 min read

NASA Webb MIRI mid-infrared image of interstellar comet 3I/ATLAS showing contours of water vapor, carbon dioxide, and methane gas around the comet's nucleus.

NASA Webb's Detection of Methane on Interstellar Comet 3I/ATLAS

NASA's Webb Telescope has detected a surprisingly high methane-to-water ratio on interstellar comet 3I/ATLAS, offering new insights into its...

Jun 10, 2026 2 min read

Illustration of an M-dwarf star with starspots on its surface, similar to the polar starspot observed by JWST on TOI-3884.

JWST Captures First Direct Spectrum of a Starspot on M-dwarf TOI-3884

The James Webb Space Telescope has captured the first direct spectrum of a starspot on the M-dwarf star TOI-3884, revealing surprising contr...

Jun 03, 2026 3 min read

Artist's concept of hot Jupiter exoplanet WASP-94A b with a band of magnesium silicate clouds at the day-night terminator.

James Webb Space Telescope Unveils Mineral Clouds on Hot Jupiter WASP-94A b

The James Webb Space Telescope reveals a daily weather cycle with mineral clouds on the exoplanet WASP-94A b, located about 700 light-years...

May 29, 2026 4 min read

Artist's impression of a Saturn-sized temperate gas giant exoplanet orbiting its host star, similar to TOI-199b. Credit: NASA/JPL-Caltech.

TOI-199b: JWST's Atmospheric Characterization of a Rare Temperate Saturn-Sized Exoplanet

The James Webb Space Telescope's 2026 observations of TOI-199b reveal a unique atmospheric composition, filling a gap between hot Jupiters a...

May 25, 2026 3 min read

Artist illustration of exoplanet LHS 3844 b silhouetted against its red dwarf host star

JWST's First Direct Surface Observation of Rocky Exoplanet LHS 3844 b

The James Webb Space Telescope's observation of LHS 3844 b reveals a dark, airless world, offering insights into atmosphere retention and su...

May 12, 2026 3 min read

Artist's concept of NASA's James Webb Space Telescope, whose NIRSpec instrument revealed the unexpected non-rotating kinematics of early-universe galaxy XMM-VID1-2075.

JWST NIRSpec Reveals Unexpected Traits in Early Universe Galaxy XMM-VID1-2075

JWST's NIRSpec uncovers a massive, non-rotating galaxy from the early universe, challenging existing galaxy-evolution models.

May 11, 2026 3 min read

JWST Detects Methane and CO2 in K2-18b Atmosphere

JWST Detects Methane and CO2 in K2-18b Atmosphere: Implications for Extraterrestrial Life

Discover how the James Webb Space Telescope's detection of methane and carbon dioxide in K2-18b's atmosphere advances the search for life be...

May 07, 2026 4 min read

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JWST Unveils Atmospheric Asymmetry on Ultra-Hot Jupiter WASP-121 b Jun 14, 2026