Lava world and habitable-zone companion around a red dwarf spur atmospheric studies

Two planets orbit the same red dwarf TOI-1752: a lava world (TOI-1752 b) with a 0.94‑day orbit and 1.69 Earth radii, and a cooler sub‑Neptune (TOI-1752 c) with a 32.7‑day orbit and 2.29 Earth radii in the optimistic habitable zone, about 337 light‑years away. This rare planetary pairing lets researchers directly compare atmospheric retention under different irradiation using JWST and the Ariel mission, advancing tests of whether exoplanets around M‑dwarfs can hold onto atmospheres. The system was confirmed Aug. 31, 2026 by IAA-CSIC and validated by TRICERATOPS and WATSON-Net, marking a major step for atmospheric characterization in exoplanet science.