[astro-ph.EP] The characterization of terrestrial exoplanets and the conditions that lead to divergent climate outcomes is a primary goal of exoplanetary science.
Habitable Zones
Posted inHabitable Zones
Detected: Rocky, Habitable-zone Exoplanet With An Atmosphere
[Carnegie Science] A team of scientists led by Harvard University’s Collin Cherubim and including Shreyas Vissapragada and other Carnegie astronomers has detected evidence of an atmosphere on a rocky planet […]
![The figure illustrates the four main phases of low-mass star formation: from the gravitational collapse of the natal core of gas and dust (Prestellar Core), to the main accretion phase (Class 0/I protostar, age ∼104 -105 yr), followed by the protostar and its surrounding protoplanetary disk (Class I/II, age ∼105 -106 yr), and finally the revealed planetary system after the disk has dispersed (Class III, age ∼107 yr). Typical spatial and timescales are indicated for each stage. Generated with Google Gemini 3 Flash and modified. -- [astro-ph.SR]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Cradle-of-Life.png?resize=1200%2C714&ssl=1)
Posted inHabitable Zones
Cradle Of Life: From The Formation Of Stars To Habitable Worlds With The SKAO
[astro-ph.SR] This chapter provides an overview of the different science cases covered by the “Cradle of Life” working group, which aims to leverage the capabilities of the Square Kilometre Array […]
![(A) Sampling location at the origin of Río Tinto, Spain (modified from García-Moyano et al., 2007). (B) The iron microbialites (white arrow) grew horizontally on a northeast-facing wall. (C) -- [GSA Bulletin]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Iron-microbialites.png?resize=1200%2C720&ssl=1)
Posted inAnalog Studies
Iron Microbialites From An Acidic Martian Analog (Río Tinto, Spain)—Implications For Finding Life On Mars
[GSA Bulletin] The search for life on Mars requires identifying suitable biosignatures detectable by rover missions or in returned samples. To support the progressing astrobiological exploration of Mars, we investigated […]
Posted inMars
Perseverance Rover Provides A Record of Ancient Mars Impacts
[NASA] Old rocks exposed on the rim of Jezero Crater preserve a roughly 4-billion-year-old cosmic “weather report” from the solar system’s most dynamic era.
![Averages over 100 trials of Siberian Traps injection scenario on a 31× 31 grid in the (fp, θ) parameter space. Mean number of DIC peaks (left), mean maximum DIC jump (top right), and mean time to return to equilibrium after end of injection phases (bottom right) are shown. The letters in the left panel correspond to parameters used in the example trials shown in Figure 10. -- [physics.ao-ph]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Modeling-the-response.png?resize=1200%2C720&ssl=1)
Posted inAtmospheres, Climate, Weather
Modeling The Response Of Earth’s Marine Carbon Cycle To Extreme CO2 Injection Events
[physics.ao-ph] We explore how the response of a conceptual model of the marine carbon cycle depends on the way in which carbon is injected from the atmosphere.
Posted inHabitable Zones
When Stabilizing Feedbacks Wreak Havoc In Habitable Planets: Chaos At The Freezing Point In A Four-Feedback Climate Model
[astro-ph.EP] The long-term habitability of Earth-like planets is governed by the balance of positive and negative climate feedbacks that regulate surface temperature and atmospheric composition.
![Vertical profiles of temperature and volume mixing ratios for the species included in our atmospheric model, simulated for TRAPPIST-1 e. The profile behavior follows from the equations and assumptions described in Section 2.2. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Biosignature-Detectability.png?resize=1200%2C720&ssl=1)
Posted inBiosignatures & Paleobiology
Biosignature Detectability On Transiting Habitable Worlds With ELT/ANDES
[astro-ph.EP] The search for life beyond the Solar System is at a turning point, transitioning from theoretical predictions to observations enabled by next-generation observatories.
Posted inExoplanets, -moons, -comets
Distant Exoplanets May Be Hiding Water Beyond Webb Telescope’s Reach, Study Finds
[University of Chicago] The planets that appear most common in the universe could have a lot of water—but it could be hiding where telescopes can’t detect it, according to a […]
Posted inHabitable Zones
Water Planet Habitability: Sea Level Is Linked To Earth’s Carbon Thermostat
[Syracuse University] Earth has a natural thermostat that has kept the planet habitable for more than a hundred million years. Scientists have struggled to fully explain how it works, but […]