LP 890-9 (SPECULOOS-2/TOI-4306 Archives

Evolution of LP 890-9’s HZ for 10% of the 1000 trials. The pale blue curves correspond to the “early Mars” limit, dark blue to “maximum greenhouse,” orange to “runaway greenhouse” and red to “recent Venus” (Kopparapu et al. 2013). Thin curves represent individual trials, while the thick line is the average. The current orbits of planets b and c, assuming the best fit stellar mass, are shown with dashed black lines. -- astro-ph.EP

Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography

History and Habitability of the LP 890-9 Planetary System

by Keith CowingDecember 5, 2024

We present numerous aspects of the evolution of the LP 890-9 (SPECULOOS-2/TOI-4306) planetary system, focusing on the likelihood that planet c can support life.

LP 890-9 (SPECULOOS-2/TOI-4306

History and Habitability of the LP 890-9 Planetary System

NASA Spaceline Current Awareness List #1,215 4 September 2026 (Space Life Science Research Results)

The Metallicity Of Giant Exoplanets Around Low-mass Stars And How Ariel Can Help

Two Extremely Irradiated Volatile-rich Sub-Neptunes With Companions In The TOI-426 And TOI-1839 Systems: Insights Into Arrival And Survival Near The Lower Edge Of The Neptunian Desert

Mapping the WISPIT2 Planet-Hosting Cavity at Sub-Hill-Radius scales

Contrasting C/O Ratios in Uranus and Neptune From Disequilibrium Chemistry: A Clue To Distinct Evolutionary Pathways?