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 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.
Posted inAstrochemistry, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Brown Dwarfs, Imaging & Spectroscopy, Press Release, Venus
Detection of Phosphine In A Brown Dwarf Atmosphere Raises More Questions
Phosphorus is one of six key elements necessary for life on Earth. When combined with hydrogen, phosphorus forms the molecule phosphine (PH3), an explosive, highly toxic gas. Found in the […]