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 22, 2025 updates

Time Markers for SETI in Binary Systems: History and Prospects
https://www.mdpi.com/2674-0346/4/4/19

Exploring synergies between Twinkle and Ariel: a pilot study
https://link.springer.com/article/10.1007/s10686-025-10032-w

Is cosmic dust porous?
https://link.springer.com/article/10.1007/s00159-025-00164-5

TOI-7166 b: A Habitable Zone mini-Neptune planet around a nearby low-mass star
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1807/8294188

Passivity-based robust shape control of a cable-driven solar sail boom for the CABLESSail concept
https://www.sciencedirect.com/science/article/abs/pii/S0094576525007143

Spectral features of photoionization of ground and excited levels of P I
https://www.sciencedirect.com/org/science/article/abs/pii/S0008420425000431

A complete list of He-pressure-broadening coefficient of CO2 lines from 100 K to 3000 K for planet and exoplanet opacity calculations
https://www.sciencedirect.com/science/article/abs/pii/S0019103525004099

Exploring Giant Planet Atmospheres with Habitable Worlds Observatory
https://arxiv.org/abs/2510.17926

Sub-Snowline Formation of Gas-Giant Planets in Binary Systems
https://arxiv.org/abs/2510.17955

The Atmospheric Composition of Sub-Neptune K2-18 b and Implications for its Formation
https://arxiv.org/abs/2510.18098

A Physical Model for the Ice Coma of 3I/ATLAS
https://arxiv.org/abs/2510.18157

Locked In Ice: how Pebble Drift and Volatile Entrapment can Significantly Impact Carbon and Oxygen Ratios in Evolving Protoplanetary Discs
https://arxiv.org/abs/2510.18587

Pre-perihelion Development of Interstellar Comet 3I/ATLAS
https://arxiv.org/abs/2510.18769

Ever Elusive Exospheres: One Probable Detection and Two Non-Detections of Hα Transits in Young Systems
https://arxiv.org/abs/2510.18820

October 21, 2025 updates

Field Theory Toolkit for Cometary Thermochemistry: Exploration through 3I/ATLAS and 2I/Borisov
https://www.researchgate.net/publication/396422797_Field_Theory_Toolkit_for_Cometary_Thermochemistry_Exploration_through_3IATLAS_and_2IBorisov

Exploring Star-Planet-Disk Connections Conference
https://exohost2025.ut.ee/

Marine phosphorus and atmospheric oxygen were coupled during the Great Oxidation Event
https://www.nature.com/articles/s41467-025-64194-4

Searching for substellar companion candidates with Gaia – I. Introducing the GaiaPMEX tool
https://www.aanda.org/articles/aa/full_html/2025/10/aa49335-24/aa49335-24.html

Seismic Oscillations Excited by Giant Impacts in Directly Imaged Giant Planets
https://iopscience.iop.org/article/10.3847/1538-4357/ae04ec

Prospects for the Crossing of Comet 3I/ATLAS’s Ion Tail
https://iopscience.iop.org/article/10.3847/2515-5172/ae12e6

Order-by-order Modeling of Exoplanet Radial Velocity Data
https://arxiv.org/abs/2510.16139

Estimating Orbital Parameters of Direct Imaging Exoplanet Using Neural Network
https://arxiv.org/abs/2510.17459

Predictions of the Nancy Grace Roman Space Telescope Galactic Exoplanet Survey. IV. Lens Mass and Distance Measurements
https://arxiv.org/abs/2510.13974

Stellar characterization, Magnesium Abundances and Chromospheric Activity Analysis of Stars with Confirmed Exoplanets from the K2 mission
https://arxiv.org/abs/2510.17574

Formation of super-Earths around low-mass stars: evolution of an icy dead zone
https://arxiv.org/abs/2510.17767

A High-Resolution Spectroscopic Survey of Directly Imaged Companion Hosts: II. Diversity in C/O Ratios among Host Stars
https://arxiv.org/abs/2510.17774

Aiming for Proxima Centauri b: Gravitational effects on relativistic spacecraft trajectories
https://arxiv.org/abs/2510.15827

Searching for Exotrojans in Pulsar Binary Systems
https://arxiv.org/abs/2510.16164

Readout of Microwave Kinetic Inductance Detector (MKID) Arrays for Habitable Worlds Observatory Using a Polyphase Filterbank Algorithm
https://arxiv.org/abs/2510.16600

October 20, 2025 Updates

Shift vector symmetry in the Alcubierre warp drive spacetime geometry
https://arxiv.org/abs/2510.11836

TOI-1743 b, TOI-5799 b, TOI-5799 c, and TOI-6223 b: TESS discovery and validation of four super-Earth to Neptune-sized planets around M dwarfs
https://www.aanda.org/articles/aa/full_html/2025/10/aa56293-25/aa56293-25.html

Assessment of Infrared Spectral Data Availability for Carbon Chemistry: Detection in Exoplanet Atmospheres.
https://openurl.ebsco.com/EPDB%3Agcd%3A13%3A37208957/detailv2?sid=ebsco%3Aplink%3Ascholar&id=ebsco%3Agcd%3A188429378&crl=c&link_origin=scholar.google.com

Prospects for the Crossing of Comet 3I/ATLAS’s Ion Tail
https://iopscience.iop.org/article/10.3847/2515-5172/ae12e6

Trans-Neptunian Object Colors as Evidence for a Past Close Stellar Flyby to the Solar System
https://iopscience.iop.org/article/10.3847/2041-8213/ae0e74

Erratum: “Galactic Cosmic Rays in the Local Interstellar Medium: Voyager 1 Observations and Model Results” (2016, ApJ, 831, 18)
https://iopscience.iop.org/article/10.3847/1538-4357/ae0c98

Chapter 10 – Ensuring settlement survival and sustainability
https://www.sciencedirect.com/science/article/abs/pii/B9780323916370000093

Chapter 3 – Settling Mars-like planets in alien star systems
https://www.sciencedirect.com/science/article/abs/pii/B9780323916370000081

Chapter 5 – A guide to classical terraforming
https://www.sciencedirect.com/science/article/abs/pii/B978032391637000007X

Chapter 1 – Orbital space settlements
https://www.sciencedirect.com/science/article/abs/pii/B9780323916370000019

TOI-283 b: A transiting mini-Neptune in a 17.6-day orbit discovered with TESS and ESPRESSO
https://arxiv.org/abs/2510.15084

October 17, 2025 updates

Interstellar Travel: After Arrival
https://www.sciencedirect.com/book/9780323916370/interstellar-travel

Evaluating Habitability and Biosignature Detection on TOI-700 d: The Role of UV Environment and Atmospheric Pressure
https://arxiv.org/abs/2510.14776

SETI Post-Detection Protocols: Progress Towards a New Version
https://arxiv.org/abs/2510.14506

The Abiotic Background as a Central Component of a Sample Safety Assessment Protocol for Sample Return
https://www.liebertpub.com/doi/10.1177/15311074251382156

Roadmap for Exoplanet High-Contrast Imaging: Nulling Interferometry, Coronagraph, and Extreme Adaptive Optics
https://www.mdpi.com/2304-6732/12/10/1030

The Relational Lattice: Architecting Planetary Coherence through Field Centric Consciousness in Human-AI Societies
https://zenodo.org/records/17347860

Initial Conditions of Planet Formation: Time Constraints from Small Bodies and the Lifetime of Reservoirs in the Solar Protoplanetary Disk
https://link.springer.com/article/10.1007/s11214-025-01216-z

Quantification of Tides in Giant Planets from Observations
https://link.springer.com/article/10.1007/s11214-025-01209-y

Existence and stability of equilibrium points in the perturbed R3BP with Stokes drag in the binary η- Cassiopeiae system
https://link.springer.com/article/10.1007/s11038-025-09567-x

Astroimmunology: the effects of spaceflight and its associated stressors on the immune system
https://www.nature.com/articles/s41577-025-01226-6

A flexible modular approach for the exploration and settlement of planetary environments
https://www.sciencedirect.com/science/article/pii/S0094576525006605

Dissociation and destruction of PAHs and PAH clusters induced by absorption of X-rays in protoplanetary discs around T Tauri stars
https://www.aanda.org/articles/aa/full_html/2025/10/aa47722-23/aa47722-23.html

Planetary Science and Exoplanets in the Era of JWST (IAU S393)
https://www.cambridge.org/core/books/planetary-science-and-exoplanets-in-the-era-of-jwst-iau-s393/7A350A9B5212529BE9B41A4A3AC3854C

Extreme Negative Polarization of New Interstellar Comet 3I/ATLAS
https://iopscience.iop.org/article/10.3847/2041-8213/ae0c08

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

Aligned, Multiple-transient Events in the First Palomar Sky Survey
https://iopscience.iop.org/article/10.1088/1538-3873/ae0afe

Demonstrating Exoplanet Transit Photometry from Space with a 15-mm Aperture Optical Navigation Camera on Hayabusa2
https://arxiv.org/abs/2510.14229

The Cosmic Island: Why Humanity May Never Leave the Solar System — Physical, Biological, and Philosophical Limits on Interstellar Travel
https://www.researchgate.net/publication/396560473_The_Cosmic_Island_Why_Humanity_May_Never_Leave_the_Solar_System_-_Physical_Biological_and_Philosophical_Limits_on_Interstellar_Travel

Spatial Profiles of 3I/ATLAS CN and Ni Outgassing from Keck/KCWI Integral Field Spectroscopy
https://arxiv.org/abs/2510.11779

NGTS-11 c: a transiting Neptune-mass planet interior to the warm Saturn NGTS-11 b
https://arxiv.org/abs/2510.14083

Search for exocomets transits in Kepler light curves: Ten new transits identified
https://arxiv.org/abs/2510.14687

October 16, 2025 updates

Pristine ices in a planet-forming disk revealed by heavy water
https://link.springer.com/article/10.1038/s41550-025-02663-y

Six microlensing planets detected via sub-day signals during the 2023–2024 season
https://www.aanda.org/articles/aa/full_html/2025/10/aa54557-25/aa54557-25.html

Can Lava Lakes from Planetary Debris form on Low-mass M Dwarfs?
https://iopscience.iop.org/article/10.3847/2515-5172/ae1238

Investigating the Sulfur Mystery in Protoplanetary Disks through Chemical Modeling
https://iopscience.iop.org/article/10.3847/1538-4357/ae0717

Current understanding of electroautotrophy and its relevance in astrobiology-related research
https://onlinelibrary.wiley.com/doi/10.1002/mlf2.70032

First Demonstration of Kernel Phase Interferometry on JWST/MIRI: Prospects for Future Planet Searches Around Post Main Sequence Stars
https://arxiv.org/abs/2510.13064

Prospects for the Crossing of Comet 3I/ATLAS’s Ion Tail
https://arxiv.org/abs/2510.13222

Investigating the Formation of Planets Interior to in situ Hot Jupiters
https://arxiv.org/abs/2510.13527

Planetary-mass companions to a retired B star BD+37 3172 and a retired F star BD+42 2315
https://arxiv.org/abs/2510.13728

Mapping the Cloud-Driven Atmospheric Dynamics & Chemistry of an Isolated Exoplanet Analog with Harmonic Signatures
https://arxiv.org/abs/2510.02260