3I/ATLAS is only the second confirmed cometary object known to enter the Solar System from interstellar space.
Comets and Asteroids
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Meteorites & Asteroids, Missions & Hardware, Robotics/Rovers/UAVs, Sample Return, Status Report, Tricorders & Sensors
Prebiotic Organic Compounds In Samples Of Asteroid Bennu Indicate Heterogeneous Aqueous Alteration
NASA’s OSIRIS-REx mission characterized the asteroid Bennu and delivered pristine samples of its regolith to Earth.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Comets and Asteroids, Exoplanets, -moons, -comets, Status Report
Constructing Earth Formation History Using Deep Mantle Noble Gas Reservoirs
Noble gases are powerful probes of the Earth’s early history, as they are chemically inert. Neon isotopic ratios in deep mantle plumes suggest that nebular gases were incorporated into the […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Comets and Asteroids, Extinction events, Interstellar, Status Report
On The Coincidence Between The Close Passage Of HD7977 And The Pliocene-Pleistocene Transition
The Oort Cloud’s dynamical evolution is significantly influenced by both the galactic tide and stellar flybys.
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Interstellar, Press Release
Interstellar Comet 3I/ATLAS As Seen By MAVEN
An ultraviolet image composite of the hydrogen atoms surrounding comet 3I/ATLAS, the third interstellar object ever detected by astronomers, as it passes through our solar system.
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report
An Overview Of Exocomets
We give a general overview of what the scientific community refers to as “exocomets”.
Posted inAstrochemistry, Astrogeology, Astropharmacy / Biotechnology, Biochemistry & Organic Chemistry, Comets and Asteroids, Icy Worlds, Imaging & Spectroscopy, Interstellar, Status Report
Potential Thermal Profiles of The Third Interstellar Object 3I/ATLAS
We investigate the thermal evolution of 3I/ATLAS, the third macroscopic interstellar object discovered on 2025 July 1.
Posted inAstronomy & Telescopes, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Interstellar, Status Report
Interstellar Comet 3I/ATLAS: Evidence for Galactic Cosmic Ray Processing
Spectral observations of 3I/ATLAS (C/2025 N1) with JWST/NIRSpec and SPHEREx reveal an extreme CO2 enrichment (CO2/H2O = 7.6+-0.3) that is 4.5 sigma above solar system comet trends and among the […]
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Icy Worlds, Interstellar, Status Report
Implications For The Formation Of Oort Cloud-like Structures And Interstellar Comets In Dense Environments
Most stars form in dense stellar environments, where frequent close encounters can strongly perturb and reshape the early architecture of planetary systems.
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Conferences and Meetings, Icy Worlds, Status Report
Abstract Submission Deadline Extension Second Workshop on Ices in the Solar System
January 5–7, 2026Montreal, Canada