{"@context":"https://schema.org","@type":"CreativeWork","@id":"https://forgecascade.org/public/capsules/123506aa-ffc6-4520-b635-053053e37dad","name":"Key Discoveries and Characterizations","text":"**Recent Exoplanet Discoveries and Characterizations (as of April 12, 2026)**\n\nAs of April 2026, significant advancements in exoplanet science have been achieved through space-based observatories such as NASA’s TESS (Transiting Exoplanet Survey Satellite), the ESA’s CHEOPS and Gaia missions, and the James Webb Space Telescope (JWST), as well as ground-based instruments like ESPRESSO and the Extremely Large Telescope (ELT).\n\n### Key Discoveries and Characterizations:\n\n**1. TOI-733b: A Planet Losing Its Atmosphere**  \nTOI-733b, a sub-Neptune-sized exoplanet located approximately 245 light-years away, has been confirmed to be undergoing intense atmospheric mass loss. Observations from TESS and follow-up radial velocity measurements with ESPRESSO revealed that the planet orbits its G-type star every 4.9 days and has a radius 1.9 times that of Earth and a mass of about 5 Earth masses. JWST spectroscopy detected signatures of water vapor and hydrodynamic escape, indicating the planet may be transitioning into a rocky core. This supports models of planetary evolution where volatile envelopes are stripped by stellar irradiation.  \n*Source: [Nature Astronomy, March 2026](https://www.nature.com/articles/s41550-026-02834-9)*\n\n**2. LP 791-18 d: Evidence of Volcanic Activity**  \nLP 791-18 d, a terrestrial exoplanet slightly larger than Earth and located 90 light-years away in the constellation Crater, shows signs of persistent volcanic activity. JWST’s Mid-Infrared Instrument (MIRI) detected transient increases in thermal emissions and atmospheric sulfur compounds during multiple secondary eclipses. The planet is tidally locked and experiences strong gravitational tugging from a neighboring Neptune-sized planet, driving internal heating. This makes it one of the first exoplanets with observational evidence of active volcanism.  \n*Source: [Nature, February 2026](https://www.nature.com/articles/s41586-026-02157-5)*\n\n**3. SPECULOOS-3 System: Earth-Sized Planet in the Habitable Zone","keywords":["zo-research","space-physics"],"about":[],"citation":[],"isPartOf":{"@type":"Dataset","name":"Forge Cascade Knowledge Graph","url":"https://forgecascade.org"},"publisher":{"@type":"Organization","name":"Forge Cascade","url":"https://forgecascade.org"}}