Tag Archive for 'Dimethyl sulfide'

An artist’s impression of the super-Earth exoplanet K2-18b. Image credit: A. Smith / N. Mandhusudhan.

Webb Detects Possible Biosignature Gases in Atmosphere of K2-18b

Apr 17, 2025 by News Staff

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have detected the chemical fingerprints of dimethyl sulfide (DMS) and/or dimethyl disulfide...

In the gas phase, if once formed, sulfurous acid shows a certain kinetic stability with an estimated lifetime of at least one second for atmospheric water vapor conditions. Image credit: Berndt et al., doi: 10.1002/anie.202405572.

Chemists Demonstrate Existence of Sulfurous Acid in Gas Phase under Atmospheric Conditions

Sep 11, 2024 by Sergio Prostak

Chemists at the Leibniz Institute for Tropospheric Research have provided experimental evidence that sulfurous acid (H2SO3), once formed in the gas phase,...

Rendering of the likely view on a Hycean world. Image credit: Shang-Min Tsai / UCR.

Webb Probably Didn’t Detect Biosignature Gas on K2-18b

May 2, 2024 by News Staff

In 2023, astronomers reported a tentative detection of dimethyl sulfide — which is predominately produced by marine microbes on Earth and regarded...

An artist’s impression of the K2-18 planetary system. Image credit: NASA / ESA / CSA / J. Olmsted, STScI / N. Madhusudhan, University of Cambridge.

Astronomers Detect Carbon Dioxide and Methane in Super-Earth’s Atmosphere

Sep 11, 2023 by Natali Anderson

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have discovered carbon dioxide and methane in the atmosphere of the habitable zone exoplanet...