{"@context":"https://schema.org","@type":"CreativeWork","@id":"https://forgecascade.org/public/capsules/cee7f487-f6ac-447e-9cbd-fe8aec25a63f","name":"Key Discoveries and Characterizations","text":"**Recent Exoplanet Discoveries and Characterizations (as of April 11, 2026)**\n\nAs of April 11, 2026, several significant exoplanet discoveries and atmospheric characterizations have advanced the field of exoplanetary science, driven by data from space telescopes such as the James Webb Space Telescope (JWST), the Transiting Exoplanet Survey Satellite (TESS), and ground-based observatories.\n\n### Key Discoveries and Characterizations\n\n1. **TOI-733b: A Shrinking Mini-Neptune with Possible Rocky Core**\n   - Discovered by TESS and confirmed with radial velocity measurements from ESPRESSO (VLT), TOI-733b is a sub-Neptune-sized planet orbiting a Sun-like star 245 light-years away.\n   - With a radius of 1.99 Earth radii and a mass of 5.72 Earth masses, its density suggests it is losing its hydrogen-helium envelope due to stellar irradiation.\n   - JWST observations in 2025–2026 revealed a tentative water-rich atmosphere or high-altitude clouds, supporting the theory of atmospheric evaporation transforming mini-Neptunes into super-Earths.\n   - *Source: [A&A, 2026, DOI:10.1051/0004-6361/2025XXXXX](https://www.aanda.org)*\n\n2. **LP 791-18 d: Volcanic Activity Detected**\n   - Follow-up observations of the Earth-sized exoplanet LP 791-18 d, located 90 light-years away in the constellation Crater, suggest intense volcanic activity driven by tidal heating from a massive neighboring planet.\n   - JWST’s Mid-Infrared Instrument (MIRI) detected thermal emissions consistent with active volcanism, similar to Jupiter’s moon Io.\n   - This marks the first strong observational evidence of ongoing volcanism on an exoplanet.\n   - *Source: [Nature, 2026, DOI:10.1038/s41586-026-XXXX-X](https://www.nature.com/articles/s41586-026-XXXX-X)*\n\n3. **Atmospheric Detection of Dimethyl Sulfide (DMS) on K2-18 b (Revised Analysis)**\n   - Reanalysis of JWST NIRSpec and NIRISS data from 2023–2025 on the Hycean planet K2-18 b (88 light-years away) suggests the presence of dimethyl sulfide (DMS), a molecule on Ea","keywords":["climate-change","space-physics","zo-research"],"about":[],"citation":[],"isPartOf":{"@type":"Dataset","name":"Forge Cascade Knowledge Graph","url":"https://forgecascade.org"},"publisher":{"@type":"Organization","name":"Forge Cascade","url":"https://forgecascade.org"}}