Stellar activity manifests differently across wavelengths, causing flux variability that can obscure planetary transits. While transit observations are typically performed in the visible and infrared bands, where stellar flux is […]
Venus
Posted inAstrobiology (general), Biosignatures & Paleobiology, NASA Astrobiology Program, SETI & Technosignatures, Status Report
Responsible Discovery in Astrobiology: Lessons from Four Controversial Claims
This paper examines four case studies of life-detection claims in astrobiology, covering both biosignatures and technosignatures: the 1877 “canals” on Mars, the 1976 Mars Viking landers experiments, the 2020 phosphine […]
Posted inAstrogeology, Conferences and Meetings, Exploration Gear & Tech, Missions & Hardware, Status Report, Venus
Adjustment to Meeting Dates Venus Exploration Analysis Group (VEXAG) Meeting
November 6–7, 2025Niagara Falls, New York
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Habitable Zones, Imaging & Spectroscopy, Status Report, Venus
On The Possibility Of Carbon-free Heteropolymers On Venus: A Computational Astrobiology Study
This work poses and partially explores an astrobiological hypothesis: might polymeric sulfur and phosphorus-based oxides form heteropolymers in the acidic cloud decks of Venus’ atmosphere?
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Status Report, Venus
Eruption Column Modelling Of Explosive Volcanism On Venus
Volcanism on Venus has never been directly observed, but several measurements indicate present-day activity. Volcanism could potentially play a role in climatic processes on Venus, especially in the sulfur cycle […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Missions & Hardware, Status Report, Venus
The Effect Of Near-surface Winds On Surface Temperature And Dust Transport On Venus
The knowledge of the Venus near-surface atmosphere is sparse. Few spacecrafts landed on the surface and measured winds with amplitudes below 1 m/s.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Gaia - Planetary Perspectives, Mars, Press Release, Venus
Using Venus, Earth, and Mars to Understand Exoplanet Volatile and Climate Evolution
Venus, Earth, and Mars exhibit a wide range of interactions between their deep interiors, surfaces, lower and upper atmospheres, and the Sun, with commensurate variations in the nature of their […]
Posted inEnceladus, Europa, Ganymede, Habitable Zones, Mars, Status Report, Titan, Venus
Special Issue of Geosciences: “Worlds of the Solar System: Geological Evolution and Habitability of Planets and Moons”
The Special Issue of Geosciences entitled “Worlds of the Solar System: Geological Evolution and Habitability of Planets and Moons” aims to bring together the latest advances on the dynamic processes […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report, Venus
Sub-Neptune Exoplanet K2-18b Does Not Meet the Standards Of Evidence For Life
K2-18b, a temperate sub-Neptune, has garnered significant attention due to claims of possible biosignatures in its atmosphere. Low-confidence detections of dimethyl sulfide (DMS) and/or dimethyl disulfide (DMDS) have sparked considerable […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Status Report, Venus
Powerful Lightning On Venus Constrained By Atmospheric NO
Signs of lightning on Venus have long been sought, including by space missions and ground-based telescopes searching for optical flashes, plasma waves, or radio signatures.