The Great Oxidation Event (GOE), which marked the transition from an anoxic to an oxygenated atmosphere, occurred 2.4 billion years ago on Earth, several hundreds of millions of years after […]
astro-ph.EP
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report, Stellar Cartography
Modeling the Impact of Unresolved Stellar Companions on Detection Sensitivity in Kepler’s Small Planet Occurrence Rates
Unresolved stellar companions can cause both under-estimations in the radii of transiting planets and over-estimations of their detectability, affecting our ability to reliably measure planet occurrence rates.
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Cryobiology, Exploration Gear & Tech, Genomics, Proteomics, Bioinformatics, Habitable Zones, Mars, Robotics/Rovers/UAVs, Status Report, Tricorders & Sensors
Tricorder Tech: Autonomous Mars Rover Module for Soil Sampling and Life Component Analysis
The search for extraterrestrial life has long been a primary focus of scientific exploration, driven by rapid advancements in technology and our understanding of the universe.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Status Report
Atmospheric Circulation Of High-Obliquity Mini-Neptunes
With the operation of JWST, atmospheric characterization has now extended to low-mass exoplanets.
Posted inAstrochemistry, Interstellar, Radiation, Space Weather & Heliophysics, Status Report, Stellar Cartography
Increased And Varied Radiation During The Sun’s Encounters With Cold Clouds In The Last 10 Million Years
Recent research raises the possibility that 3 and 7 million years ago, the Sun encountered massive clouds that shrank the heliosphere–the solar cocoon protecting our solar system–exposing Earth to its […]
Posted inAriel Mission, Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Missions & Hardware, Status Report, Stellar Cartography
The Origins Of Planets For ArieL (OPAL) Key Science Project: The End-to-end Planet Formation Campaign For The ESA Space Mission Ariel
The growing body of atmospheric observations of exoplanets from space and ground-based facilities showcases how the great diversity of the planetary population is not limited to their physical properties but […]
Posted inComets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report
Perihelion Asymmetry In The Water Production Rate Of Tthe Interstellar Object 3I/ATLAS
3I/ATLAS is an interstellar object whose activity provides critical insights into its composition and origin. However, due to its orbital geometry, the object is too close to the Sun near […]
Posted inExoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
Observational Signatures of Planetary Tidal Disruption Events Around Solar-Mass Stars
The tidal disruption of planets by their host stars represents a growing area of interest in transient astronomy, offering insights into the final stages of planetary system evolution.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Hot And cloudy: High Temperature Clouds In Super-Earths And Sub-Neptunes
JWST observations provide for the first time evidence for an atmosphere on a rocky exoplanet – 55 Cnc e. The atmosphere of 55 Cnc e is hot with Teq>2000K and […]
Posted inAstrogeology, Exoplanets, -moons, -comets, Lava / magma ocean / Volcanic Worlds, Status Report
Magma Ocean Waves And Thermal Variability On Lava Worlds
Lava worlds are rocky planets with dayside skins made molten by stellar irradiation. Tidal heating on these shortest-period planets is more than skin deep.