Скачать или смотреть K2-18B: JWST’s Window Into a Possible Hycean World

In 2023–2024, the James Webb Space Telescope’s NIRISS and NIRSpec instruments gave us the clearest near-infrared view yet of exoplanet K2-18 b. The results—published in The Astrophysical Journal Letters and shared through NASA and ESA releases—revealed methane (CH₄) and carbon dioxide (CO₂) in its hydrogen-rich atmosphere, supporting predictions for a potential “Hycean” world.

The data shows a clear atmosphere fits better than a cloudy one, but even JWST can’t yet decide if K2-18 b hides a global ocean or is simply a deep mini-Neptune. Either way, it’s one of the most intriguing exoplanets we’ve found. 🌌

Credits: NASA Goddard Space Flight Center, ESA, JWST NIRISS/NIRSpec instrument teams, The Astrophysical Journal Letters, NASA Exoplanet Archive.
⚠️This video is created for educational and informational purposes.
The script is generated using AI and edited manually.
Image source: Pixabay.

#space #jwst #k218b #hycean #nasa #esa #exoplanets #astronomy