Temperature-dependent biological productivity controls silicate weathering and thereby extends the potential habitable timespan of Earth.
biosphere
History and Habitability of the LP 890-9 Planetary System
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.
Detectability Of Biosignatures In Warm, Water-rich Atmospheres
Warm rocky exoplanets within the habitable zone of Sun-like stars are favoured targets for current and future missions. Theory indicates these planets could be wet at formation and remain habitable […]
Exo-Daisy World: Revisiting Gaia Theory through An Informational Architecture Perspective
The Daisy World model has long served as a foundational framework for understanding the self-regulation of planetary biospheres, providing insights into the feedback mechanisms that may govern inhabited exoplanets.
Rate-induced Biosphere Collapse In The Daisyworld Model
There is much interest in the phenomenon of rate-induced tipping, where a system changes abruptly when forcings change faster than some critical rate. Here, we demonstrate and analyse rate-induced tipping […]
Sharp Rise in Cosmic Ray Irradiation of Organisms on Earth Caused by a Nearby SN Shockwave Passage
The work considers the modelling of nearby supernova (SN) effects on Earth’s biosphere via cosmic rays (CRs) accelerated by shockwaves.
Substantial Extension of the Lifetime of the Terrestrial Biosphere
Approximately one billion years (Gyr) in the future, as the Sun brightens, Earth’s carbonate-silicate cycle is expected to drive CO2 below the minimum level required by vascular land plants, eliminating […]
“Dark Biosphere” Planetarium Show
The European Astrobiology Institute (EAI) is delighted to announce that the planetarium show “Dark Biosphere” has won the Best Film Award at the highly regarded Full Dome Festival in Brno. […]
Retrievals Applied to a Decision Tree Framework Can Characterize Earthlike Exoplanet Analogs
Exoplanet characterization missions planned for the future will soon enable searches for life beyond our solar system. Critical to the search will be the development of life detection strategies that […]
A Global Atlas Of Subsurface Microbiomes Reveals Phylogenetic Novelty, Large Scale Biodiversity Gradients, And A Marine-terrestrial Divide
Subsurface environments constitute one of Earth’s largest habitats for microbial life, yet differences between surface and subsurface microbiomes and between marine and terrestrial microbiomes remain unclear.
