Mastodawn

Kuuke's Sterrenbeelden Apr 21, 2025

Webb detecteert mogelijke biosignatuurgassen in de atmosfeer van K2-18b

https://www.kuuke.nl/webb-detecteert-mogelijke-biosignatuurgassen-in-de-atmosfeer-van-k2-18b/

#atmopsfeer #biosignatuur #BuitenaardsLeven #dimethyldisulfide #dimethylsulfide #exoplaneet #HyceaanseWereld #K218

Webb detecteert mogelijke biosignatuurgassen in de atmosfeer van K2-18b – Kuuke's Sterrenbeelden

Astronomen hebben met behulp van de Webb Space Telescope de chemische vingerafdrukken van dimethylsulfide en dimethyldisulfide in de atmosfeer van K2-18b gevonden. Op Aarde worden deze twee verbindingen voornamelijk door microbiologisch leven, zoals fytoplankton, geproduceerd. Hoewel een onbekend chemisch proces de bron kan zijn van deze moleculen in de atmosfeer van K2-18b vormen de resultaten…

Harm Botjes Apr 17, 2025

Dat er op K2-18B aanwijzingen zijn dat er leven is omdat er #dimethylsulfide & #dimethyldisulfide is aangetroffen is misschien net zo'n voorteken alsof er op aarde leven is/was omdat er #CO2 is aangetroffen.

https://www.klimaathelpdesk.org/answers/waarom-wordt-er-nooit-aandacht-besteed-aan-de-co2-die-ieders-adem-zit/

Waarom wordt er nooit aandacht besteed aan de CO₂ die in ieders adem zit?

Waarom wordt er nooit aandacht besteed aan de CO₂ die in ieders adem zit? Dit is toch ook slecht voor het klimaat?

KlimaatHelpdesk

N-gated Hacker News Apr 17, 2025

🚀👽 "Astrophiles, rejoice! Or not. Scientists 'might' have found alien life based on a whiff of dimethyl sulfide from K2-18b 😱. But wait, before you buy your telescope to greet ET, remember you can only afford it if you subscribe for 8 issues at a bargain price! 🤑✨"
https://www.skyatnightmagazine.com/news/k2-18b-dimethyl-sulfide #Astrophiles #AlienLife #K218b #DimethylSulfide #ScienceNews #HackerNews #ngated

Astronomers have found the 'most promising signs yet' of alien life on a planet beyond our Solar System

Astronomers find most promising signs yet of biosignature on exoplanet K2-18b, dimethyl sulfide, which could indicate life on its surface.

BBC Sky at Night Magazine

Francis Mangion (M)Mar 30, 2025

#JWST #exoplanet #K2_18b #HyceanWorld #DimethylSulfide

https://www.facebook.com/share/p/1EKWf5xHw9/

NASA Explore The Universe | The James Webb Space Telescope (JWST) has made a historic discovery, detecting the molecule dimethyl sulfide (DMS) in the atmosphere of an Exoplanet | Facebook

The James Webb Space Telescope (JWST) has made a historic discovery, detecting the molecule dimethyl sulfide (DMS) in the atmosphere of an Exoplanet. This is a major breakthrough because, on Earth,...

Lukas VFN 🇪🇺Jun 30, 2024

New discovery reveals that ocean #algae unexpectedly help cool the Earth https://phys.org/news/2024-06-discovery-reveals-ocean-algae-unexpectedly.html #protists #microbes

Alternative #dimethylsulfoniopropionate #biosynthesis enzymes in diverse and abundant microorganisms https://www.nature.com/articles/s41564-024-01715-9

"They identified the bloom-forming #Pelagophyceae algae as potentially abundant, important producers of a compound called #DMSP... this is the main source of a #climate active gas called #dimethylsulfide (#DMS), which is known as the smell of the seaside."

New discovery reveals that ocean algae unexpectedly help cool the Earth

A common type of ocean algae plays a significant role in producing a massively abundant compound that helps cool the Earth's climate, new research has discovered.

Phys.org

Kuuke's Sterrenbeelden May 5, 2024

Webb vond vermoedelijk geen dimethylsulfide op K2-18b

In 2023 rapporteerden astonomen een voorlopige detectie van dimethylsulfide – dat op Aarde voornamelijk wordt geproduceerd door mariene micro-organismen en dat wordt beschouwd als een biosignatuurgas – in de atmosfeer van de superaarde

https://www.kuuke.nl/webb-vond-vermoedelijk-geen-dimethylsulfide-op-k2-18b/

#BiosignatuurVoorLeven #dimethylsulfide #DMS #exoplaneet #HyceaanseWereld #K218 #K218b #waterwereld #WebbSpaceTelescope

Webb vond vermoedelijk geen dimethylsulfide op K2-18b

Kuuke's Sterrenbeelden

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Spaceflight 🚀Jan 17, 2024

On #Earth, #DimethylSulfide is only produced by #life. That does not prove the existence of life on #K218b - but if dimethyl sulfide exists there, it is certainly a hair-raising clue. https://arstechnica.com/space/2024/01/no-the-james-webb-space-telescope-hasnt-found-life-out-there-at-least-not-yet/

#SETI

No, the James Webb Space Telescope hasn’t found life out there—at least not yet

There is a robust debate ongoing in the scientific community.

Ars Technica

Matt Willemsen Sep 14, 2023

Signs of Life? Why This Alien World’s Atmosphere Is Exciting Astronomers
Scientists in the United Kingdom and the United States have just reported some very interesting chemical traces in the atmosphere of a planet called K2-18b, which is about 124 light-years from Earth. In particular, they may have detected a substance which on Earth is only produced by living things.
https://singularityhub.com/2023/09/13/signs-of-life-why-this-alien-worlds-atmosphere-is-exciting-astronomers/ #exoplanet #atmosphere #K2ー1b #DimethylSulfide #DMS #CH3SCH3 #life

Signs of Life? Why This Alien World's Atmosphere Is Exciting Astronomers

The James Webb has detected CO2 and methane in an exoplanet atmosphere. It may also have found a substance which on Earth is only produced by living things.

Singularity Hub

💧🌏 Greg Cocks Jun 3, 2023

Plankton Generate a Cloudy Shield over the Antarctic
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https://www.scientificamerican.com/article/plankton-generate-a-cloudy-shield-over-the-antarctic/ <-- shared technical article
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https://doi.org/10.5194/acp-23-1677-2023 <-- shared paper
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#GIS #spatial #mapping #watervapour #watervapor #nucleus #nucleation #cloud #whitening #climatemodels #cloudformation #clouds #weather #albedo #plankton #phytoplankton #remotesensing #satellite #MODIS #model #modeling #Antarctic #sunlight #climate #reflection #climatechange #warming #radiation #dimethylsulfide #aerosl #particles #marineboundarylayer #MBL
@noaa

Plankton Generate a Cloudy Shield over the Antarctic

Southern Ocean phytoplankton help to brighten Earth’s clouds

Scientific American

RashaKamel Feb 1, 2023

"Data stored in ice cores dating back 55 years bring new insight into atmospheric levels of a molecule that can significantly affect weather and climate.
Dimethyl sulfide (C2H6S) is a small molecule released by phytoplankton in the ocean, which can play a big role in regulating the Earth’s climate".
#phytoplankton #climate #dimethylsulfide
https://www.eurekalert.org/news-releases/978193

Monitoring an ‘anti-greenhouse’ gas: Dimethyl sulfide in Arctic air

Data stored in ice cores dating back 55 years bring new insight into atmospheric levels of a molecule that can significantly affect weather and climate.

EurekAlert!