WASP-39b Atmosphere water-rich

Hubble observes exoplanet atmosphere in more detail than ever before
https://www.spacetelescope.org/news/heic1804/?lang

The planet has three times more water than Saturn.

JWST data !!

https://twitter.com/TheChedgehog/status/1548068623352139776

So is WASP-96 b. Excerpt from Alphynix's post:

Quote :

WASP-96 b is a giant, mostly gas planet outside our solar system, discovered in 2014. Webb’s Near-Infrared Imager and Slitless Spectrograph (NIRISS) measured light from the WASP-96 system as the planet moved across the star. The light curve confirmed previous observations, but the transmission spectrum revealed new properties of the planet: an unambiguous signature of water, indications of haze, and evidence of clouds in the atmosphere. This discovery marks a giant leap forward in the quest to find potentially habitable planets beyond Earth.

yes, but it's W 39b here !

https://arxiv.org/abs/2208.11692

Identification of carbon dioxide in an exoplanet atmosphere

https://esawebb.org/news/weic2221/

Webb Reveals an Exoplanet Atmosphere as Never Seen Before

The NASA/ESA/CSAJames Webb Space Telescope just scored another first: a molecular and chemical profile of a distant world’s skies.

The telescope’s array of highly sensitive instruments was trained on the atmosphere of WASP-39 b, a “hot Saturn” (a planet about as massive as Saturn but in an orbit tighter than Mercury) orbiting a star some 700 light-years away. This Saturn-sized exoplanet was one of the first examined by the NASA/ESA/CSA James Webb Space Telescope when it began regular science operations. The results have excited the exoplanet science community. Webb’s exquisitely sensitive instruments have provided a profile of WASP-39 b’s atmospheric constituents and identified a plethora of contents, including water, sulphur dioxide, carbon monoxide, sodium and potassium.