Interstellar Updates

 

These are items of interest to the interstellar exploration community that we’ve found in our quest for information that will help us advance toward our goals.  If you know of anything we’ve overlooked, or any sources of such information we should monitor, or if you would like to be added to our IRG-updates mailing list and receive these updates in you email every weekday, please send that information to info@irg.space.

You can now search our database of interstellar updates and find items of interest to you.

October 31, 2025 updates

Atmospheric Mass Loss of Planet WASP-195b
https://link.springer.com/article/10.1007/s10511-025-09881-2

The origin and tidal evolution of hot Jupiters constrained by a broken age–frequency relation
https://www.nature.com/articles/s41550-025-02693-6

Crewmember demographic factors and their association with brain and ocular changes following spaceflight
https://www.nature.com/articles/s41526-025-00505-9

Transients in the Palomar Observatory Sky Survey (POSS-I) may be associated with nuclear testing and reports of unidentified anomalous phenomena
https://www.nature.com/articles/s41598-025-21620-3

Experiments reveal extreme water generation during planet formation
https://www.nature.com/articles/s41586-025-09816-z

Do Young Suns Produce Frequent, Massive CMEs? Results from Five-year Dedicated Optical Observations of EK Draconis and V889 Hercules
https://iopscience.iop.org/article/10.3847/1538-4357/adfe70

Time-resolved protoplanetary disk physics in DQ Tau with JWST
https://www.aanda.org/articles/aa/full_html/2025/11/aa56016-25/aa56016-25.html

Engulfment of a hot Jupiter as a possible origin of the rapid spin and internal spin misalignment of the planet-hosting red giant Kepler-56
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1891/8307488

On The Applicability of Ring-Moon Cycles to Exoplanets
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1881/8306856

Unusual polarimetric response of interstellar Comet 3I/ATLAS: Clues to the microphysics of particles populating its inner coma
https://academic.oup.com/mnrasl/advance-article/doi/10.1093/mnrasl/slaf112/8307494

The Effect of Offsets from True Orbital Parameters on Exoplanet High-resolution Transmission Spectra
https://iopscience.iop.org/article/10.3847/1538-3881/adf0fc

Covariance-Based Estimation Performance for In-Flight Calibration of NASA’s ACS3 Solar Sail
https://www.sciencedirect.com/science/article/pii/S0273117725012426

Interstellar Migration, the Population ‘Problem’ and the Climate Emergency
https://onlinelibrary.wiley.com/doi/10.1111/criq.70013

The Library of Exoplanet Atmospheric Composition Measurements: Population Level Trends in Exoplanet Composition with ExoComp
https://www.researchgate.net/publication/397088537_The_Library_of_Exoplanet_Atmospheric_Composition_Measurements_Population_Level_Trends_in_Exoplanet_Composition_with_ExoComp

Interstellar Comet 3I/ATLAS: Evidence for Galactic Cosmic Ray Processing
https://www.researchgate.net/publication/397088793_Interstellar_Comet_3IATLAS_Evidence_for_Galactic_Cosmic_Ray_Processing

Tidally driven inertial waves enhance eccentricity damping and spin evolution in planets and stars
https://arxiv.org/abs/2510.25812

Atmospheric collapse and re-inflation through impacts for terrestrial planets around M dwarfs
https://arxiv.org/abs/2510.25896

Potential Thermal Profiles of The Third Interstellar Object 3I/ATLAS
https://arxiv.org/abs/2510.25945

October 30, 2025 updates

Robust Exponential Complexity Growth in the Universe
https://jbh.journals.villanova.edu/index.php/JBH/article/view/3184

The Legacy and Future of Aluminum Alloys: Space Exploration and Extraterrestrial Settlement
https://pubs.acs.org/doi/full/10.1021/acsmaterialsau.5c00139

Communicating Discoveries in the Search for Life in the Universe Workshop Report
https://liebertpub.com/doi/10.1177/15311074251387636

Artificial Intelligence Revolutionizing Time-Domain Astronomy
https://www.mdpi.com/2218-1997/11/11/355

Characterizing non-transiting exoplanets through transit timing variations using deep learning
https://link.springer.com/article/10.1140/epjs/s11734-025-02033-9

Building wet planets through high-pressure magma–hydrogen reactions
https://link.springer.com/article/10.1038/s41586-025-09630-7

Magnetohydrodynamic simulation assessment of a potential near-ultraviolet early ingress in WASP-189b
https://www.aanda.org/articles/aa/full_html/2025/11/aa56404-25/aa56404-25.html

Probing the extent of WASP-52 b’s atmosphere – High-resolution observations and 3D modeling insights
https://www.aanda.org/articles/aa/full_html/2025/10/aa55613-25/aa55613-25.html

Fundamental effective temperature measurements for eclipsing binary stars – VI. Improved methodology and application to the circumbinary planet host star BEBOP-3
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1856/8305929

Eclipse Mapping with Ariel: Future Prospects for a Population-Level Mapping Survey
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1721/8305922

On the Detection of Binary Free-Floating Planets in the Roman Galactic Exoplanet Survey
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1858/8305925

Discovery of a Nearby Habitable Zone Super-Earth Candidate Amenable to Direct Imaging
https://iopscience.iop.org/article/10.3847/1538-3881/ae0e20

Near the Runaway: The Climate and Habitability of Teegarden’s Star b
https://iopscience.iop.org/article/10.3847/2041-8213/ae122a

Evidence of a Water-Rich Environment in Interstellar Space and Its Connection to the Interstellar Comet 3I/ATLAS
https://zenodo.org/records/17478411

Revisiting the atmosphere of HD-149026 b: the role of stellar abundances and choice of opacities in exoplanet atmosphere modelling
https://academic.oup.com/mnras/article/544/1/113/8272721

Rapid Brightening of 3I/ATLAS Ahead of Perihelion
https://arxiv.org/abs/2510.25035

Engulfment of Eccentric Planets by Giant Stars: Hydrodynamics and Light Curves
https://arxiv.org/abs/2510.25547

Tidal dissipation and spin-orbit alignment due to the precessional instability in convection zones in rotating giant planets and stars
https://arxiv.org/abs/2510.25624

Engulfment of a hot Jupiter as a possible origin of the rapid spin and internal spin misalignment of the planet-hosting red giant Kepler-56
https://arxiv.org/abs/2510.25680

Hard X-ray Emission in AU Mic Flares: A Minor Contributor to Planetary Atmospheric Escape
https://arxiv.org/abs/2508.15107

From Underground Oceans to Continents: A Glimpse into the Water Inventory on Rocky Planets using Host Star Abundances
https://arxiv.org/abs/2510.24854

The Fate of Hydrogen and Helium: From Planetary Embryos to Earth- and Neptune-like Worlds
https://arxiv.org/abs/2510.24956

October 29, 2025 updates

An idealized general circulation model for the atmospheric circulation on the ice giants
https://www.aanda.org/articles/aa/full_html/2025/10/aa54015-25/aa54015-25.html

Prediscovery Activity of New Interstellar Object 3I/ATLAS: Rapid Brightening from 6 to 4 au
https://iopscience.iop.org/article/10.3847/2041-8213/ae147b

The Dynamical Environment within the Habitable Zone of the Gaia-4 and Gaia-5 Planetary Systems
https://arxiv.org/abs/2510.23792

On The Applicability of Ring-Moon Cycles to Exoplanets
https://arxiv.org/abs/2510.24644

Sensitivity to Sub-Io-sized Exosatellite Transits in the MIRI LRS Lightcurve of the Nearest Substellar Worlds
https://arxiv.org/abs/2510.23709

Bistability, Oscillations, and Multistability on Hycean Planets
https://arxiv.org/abs/2510.24224

A Deep Search for Exomoons Around WISE 0855 With JWST
https://arxiv.org/abs/2510.24575

Magrathea v2: A planetary interior modeling platform in C++
https://arxiv.org/abs/2510.23733

October 28, 2025 updates

Conquering Space: The Challenge of Recreating Ecosystems
https://bis-space.com/shop/product/jbis-078-01-0024/

Discovery of multi-temperature coronal mass ejection signatures from a young solar analogue
https://www.nature.com/articles/s41550-025-02691-8

Horizontal and vertical exoplanet thermal structure from a JWST spectroscopic eclipse map
https://www.nature.com/articles/s41550-025-02666-9

How to understand exoplanets — space scientists call on lab-based chemists to help
https://www.nature.com/articles/d41586-025-03478-7

Discovery of a Debris Disk Around TWA 20
https://arxiv.org/abs/2510.20216

Investigating aerosols as a way to reconcile K2-18 b JWST MIRI and NIRISS/NIRSpec observations
https://www.aanda.org/articles/aa/full_html/2025/10/aa56905-25/aa56905-25.html

Extracting starspot structures from exoplanet transit photometry
https://www.aanda.org/articles/aa/full_html/2025/10/aa52779-24/aa52779-24.html

PLATOSpec’s first results: Planets WASP-35b and TOI-622b are on aligned orbits, and K2-237b is on a polar orbit
https://www.aanda.org/articles/aa/full_html/2025/10/aa56115-25/aa56115-25.html

Planetary Albedo Is Limited by the Above-cloud Atmosphere: Implications for Sub-Neptune Climates
https://iopscience.iop.org/article/10.3847/1538-4357/ae0192

In Search of Decay: An Analysis of Transit Times of Hot Jupiters in Main-sequence and Post-main-sequence Systems
https://iopscience.iop.org/article/10.3847/1538-4357/adfd60

Evolution of Stellar Activity and Habitable Zone. I. Ultraviolet Emission of Dwarfs in Open Clusters and Field Stars
https://iopscience.iop.org/article/10.3847/1538-4365/ae08a9

A Diagram of Intermittent Habitability for Eccentric Exoplanets
https://iopscience.iop.org/article/10.3847/2515-5172/ae1694

Experimental demonstration and quantitative analysis of X-ray-driven propulsion in graphene sponge
https://www.sciencedirect.com/science/article/pii/S0969806X25008953

Venus as an Exoplanet: I. An Initial Exploration of the 3-D Energy Balance for a CO2-Rich Exoplanetary Atmosphere Around the M-Dwarf Star GJ 436
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2024JE008540

Impact of Subsurface Temperature Gradients on Emission Spectra of Airless Exoplanets: the Solid-state Greenhouse and Anti-Greenhouse
https://arxiv.org/abs/2510.22932

SAMPLE — Stratospheric Altitude Microbiology Probe for Life Existence
https://arxiv.org/abs/2507.11581

Metallicity regulates planet formation across all masses
https://arxiv.org/abs/2510.21863

Earth Analogs in Reflected Light: Insights from Early Spectral Characterization in Unconstrained Orbits
https://arxiv.org/abs/2510.21973

Fundamental effective temperature measurements for eclipsing binary stars – VI. Improved methodology and application to the circumbinary planet host star BEBOP-3
https://arxiv.org/abs/2510.23218

Energetics of star-planet magnetic interactions: Novel insights from 3D modelling
https://arxiv.org/abs/2510.23277

HST-COS Transit Spectroscopy of KELT-20b: First Detection of Excess Far-ultraviolet Absorption From an Ultra-hot Jupiter
https://arxiv.org/abs/2510.23598

Propellantless space exploration
https://arxiv.org/abs/2510.21743

October 27, 2025 Updates

Untying Time: The H-Second and H-Meter as Universal Standards for Interstellar Applications
https://johnwelshconsulting.com/h-second-paper.pdf

Energy needed to propel a tiny spacecraft to Proxima Centauri
https://pubs.aip.org/aapt/ajp/article/93/11/874/3368439

Radiation Hydrodynamics of Self-gravitating Protoplanetary Disks: I. Direct Formation of Gas Giants via Disk Fragmentation
https://arxiv.org/abs/2510.19915

The Extraterrestrial Contact Window
https://www.academia.edu/129000327/The_Extraterrestrial_Contact_Window

Space Travel to the Edge of the Universe in Just 44 Years
http://ahadi.de/space_travel.pdf

Experimental demonstration and quantitative analysis of X-ray-driven propulsion in graphene sponge
https://www.sciencedirect.com/science/article/abs/pii/S0969806X25008953

Insights of Charged Traversable Wormholes within the context of Matter-Geometry Coupled Gravity
https://www.worldscientific.com/doi/abs/10.1142/S0219887826500611

The Framework Of The Grand Unified Theory of Existence
https://www.academia.edu/144159347/The_Framework_Of_The_Grand_Unified_Theory_of_Existence

The Temporal Observability Filter Hypothesis (TOFH): A Physically-Constrained, Bayesian Framework for the Observational Invisibility of Technological Civilizations
https://www.academia.edu/143709470/The_Temporal_Observability_Filter_Hypothesis_TOFH_A_Physically_Constrained_Bayesian_Framework_for_the_Observational_Invisibility_of_Technological_Civilizations

Magnetic clumping of charged dust in the dense interstellar medium
https://arxiv.org/abs/2510.20899

Irradiated Atmospheres IV: Effect of Mixing Heat Flux on Chemistry
https://arxiv.org/abs/2510.21543

Mechanisms of Superrotation in Slowly-Rotating and Tidally-Locked Planets
https://arxiv.org/abs/2510.21680

An Hα Transit of HD 189733b to Assess Stellar Activity Across the Transit Chord Close to JWST Observations
https://arxiv.org/abs/2510.21703

Two warm Earth-sized exoplanets and an Earth-sized candidate in the M5V-M6V binary system TOI-2267
https://www.aanda.org/articles/aa/full_html/2025/10/aa54419-25/aa54419-25.html

Wind Power as a Technosignature on M-dwarf Planets
https://iopscience.iop.org/article/10.3847/2515-5172/ae13a7

A Link between Rocky Planet Density and Host Star Chemistry
https://iopscience.iop.org/article/10.3847/1538-3881/ae0e17

Modelling the effect of stellar metallicity on the XUV evolution of low-mass stars and its impact on exoplanet atmospheres/habitability
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1753/8301214?searchresult=1