LTT 1445 Ac Archives

Schematic of episodic atmospheric collapse and regeneration through impacts for a tidally locked planet. A) The planet has a volatile rich atmosphere which redistributes heat from the day- to the nightside. B) Atmospheric escape thins the atmosphere, heat redistribution becomes less efficient, nightside temperatures drop. C) Nightside temperatures have reached the volatile condensation temperature, the atmosphere collapses. D) Volatiles outgassed through volcanism or magma ocean pockets accumulate on the nightside as ice. E) An impactor hits the nightside and vaporises ice and rock. Hot vapour, ejecta, and silicate rain further vaporise the nightside ice sheets (see Section 2.2 for details). An atmosphere is regenerated. -- astro-ph.EP

Astrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Extinction events, Impact events, Status Report

Atmospheric Collapse And re-inflation Through Impacts For Terrestrial Planets Around M Dwarfs

by Keith CowingOctober 31, 2025October 31, 2025

Detection of an atmosphere around a terrestrial exoplanet will be a major milestone in the field, but our observational capacities are biased towards to tidally locked, close-in planets orbiting M-dwarf […]

LTT 1445 Ac

Atmospheric Collapse And re-inflation Through Impacts For Terrestrial Planets Around M Dwarfs

Why Europa’s Hidden Ocean May Be More Difficult To Reach Than Scientists Thought

Pinpointing Where Cells First Begin Copying DNA

Experimental Measurements of Benzene Ice Critical Saturation Ratios on Titan Tholins and Impact on the Microphysical Modeling of Titan’s South Polar Benzene Cloud

From Mars to Minas: Research Reclassifies Organisms That Thrive In Highly Saline Environments

Could Alien Signals Be Hiding On A Different Radio Channel?