We investigate a new class of habitable planets composed of water-rich interiors with
massive oceans underlying H 2-rich atmospheres, referred to here as Hycean worlds. With …

Context. The nearest stars provide a fundamental constraint for our understanding of stellar
physics and the Galaxy. The nearby sample serves as an anchor where all objects can be …

We present an analysis of a volume-complete sample of 363 mid-to-late M dwarfs within 15
pc of the Sun with masses between 0.1 and 0.3 M⊙ observed by TESS within sectors 1–42 …

We present the discovery and validation of a three-planet system orbiting the nearby (31.1
pc) M2 dwarf star TOI-700 (TIC 150428135). TOI-700 lies in the TESS continuous viewing …

We present a study of flare rates, rotation periods, and spectroscopic activity indicators of
125 single stars within 15 parsecs and with masses between 0.1 and 0.3 M⊙ observed …

We present the confirmation of two new planets transiting the nearby mid-M dwarf LTT 3780
(TIC 36724087, TOI-732, V= 13.07, K s= 8.204, R s= 0.374 R⊙, M s= 0.401 M⊙, d= 22 pc) …

A complete accounting of nearby objects—from the highest-mass white dwarf progenitors
down to low-mass brown dwarfs—is now possible, thanks to an almost complete set of …

Exploring the properties of exoplanets near or inside the radius valley provides insight on
the transition from the rocky super-Earths to the larger, hydrogen-rich atmosphere mini …

Cold Jovian planets play an important role in sculpting the dynamical environment in which
inner terrestrial planets form. The core accretion model predicts that giant planets cannot …

Abstract The James Webb Space Telescope's (JWST) NIRSpec instrument will unveil the
nature of exoplanet atmospheres across the wealth of planet types, from temperate …