A paired exoplanet system around the same star is highlighted as crucial for isolating variables and improving atmospheric models for low-mass stars.

TOI-1752 c is a sub-Neptune with a 32.7-day orbit, a radius of 2.29 Earth radii, and sits in the optimistic habitable zone where liquid water could exist, pending atmospheric verification.

The discovery was published in MNRAS and announced by IAA-CSIC, with collaboration from multiple institutions and data from NASA's TESS and several ground-based observatories.

Both planets were validated using TRICERATOPS and WATSON-Net frameworks, confirming the signals as real planets and the pairing as genuine.

The TOI-1752 b and c system orbits the same M-dwarf star about 337 light-years away in Boötes and was confirmed on August 31, 2026.

The finding has strong implications for atmospheric spectroscopy, with expectations for JWST observations and inclusion in ESA’s Ariel mission targets to characterize atmospheres.

TOI-1752 b is a lava world with a 0.94-day orbit and a 1.69 Earth-radius rocky body, likely lacking a substantial atmosphere due to intense stellar irradiation.

Together, the two planets offer a unique chance to study atmospheric retention and composition under identical stellar conditions but varying distances from their host star, addressing how atmospheres form and endure around M-dwarfs.