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Tuesday, September 1, 2026 · UTC
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JWST Reveals Water, CO2, and Possible Hydrogen Sulfide in HAT-P-1 b Atmosphere

JWST NIRSpec data confirms water and carbon dioxide in the hot Jupiter HAT-P-1 b atmosphere with high metallicity.

TruthFoundry News Desk
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Stands on 8 placed sources from 2 publishers.
Atmospheric retrievals yielded strong evidence for water vapor (H2O) with a Bayes factor of log10BH2O=8.9 and strong evidence for carbon dioxide (CO2) with a Bayes factor of log10BCO2=52.3. [1] Researchers used the James Webb Space Telescope's NIRSpec G395H instrument to observe the hot Jupiter HAT-P-1 b over a wavelength range of 2.7 to 5.3 micrometers. [2] NASA offers a public pixel adoption program for its Nancy Grace Roman Space Telescope, allowing one pixel per email address. [3] The results establish HAT-P-1 b as a benchmark for comparative studies of hot-Jupiter atmospheric composition due to its oxygen-rich atmosphere and low carbon-to-oxygen ratio. [4] The study combined the new JWST data with archival observations from the Hubble Space Telescope's STIS and WFC3 instruments to create a comprehensive atmospheric analysis from 0.3 to 5.3 micrometers. [5] Participants receive a certificate with their pixel number, which they can print and share on social media. [6] The Nancy Grace Roman Space Telescope is a next-generation space observatory designed to study dark energy, exoplanets, and infrared astrophysics. [7] The Wide Field Instrument provides a field of view 100 times greater than the Hubble Space Telescope's infrared instrument. [8]
What this stands on
  1. Atmospheric retrievals yielded strong evidence for water vapor (H2O) with a Bayes factor of log10BH2O=8.9 and strong evidence for carbon dioxide (CO2) with a Bayes factor of log10BCO2=52.3. · Astrobiology
  2. Researchers used the James Webb Space Telescope's NIRSpec G395H instrument to observe the hot Jupiter HAT-P-1 b over a wavelength range of 2.7 to 5.3 micrometers. · Astrobiology
  3. NASA offers a public pixel adoption program for its Nancy Grace Roman Space Telescope, allowing one pixel per email address. · NASA Science
  4. The results establish HAT-P-1 b as a benchmark for comparative studies of hot-Jupiter atmospheric composition due to its oxygen-rich atmosphere and low carbon-to-oxygen ratio. · Astrobiology
  5. The study combined the new JWST data with archival observations from the Hubble Space Telescope's STIS and WFC3 instruments to create a comprehensive atmospheric analysis from 0.3 to 5.3 micrometers. · Astrobiology
  6. Participants receive a certificate with their pixel number, which they can print and share on social media. · NASA Science
  7. The Nancy Grace Roman Space Telescope is a next-generation space observatory designed to study dark energy, exoplanets, and infrared astrophysics. · NASA Science
  8. The Wide Field Instrument provides a field of view 100 times greater than the Hubble Space Telescope's infrared instrument. · NASA Science
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