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.

August 07, 2025 updates

A Cost-Effective Search for Extraterrestrial Probes in the Solar System
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1158/8221885

Stable Isotope Abundance Patterns as Potential Biosignatures
https://liebertpub.com/doi/10.1177/15311074251360977

Worlds Next Door: A Candidate Giant Planet Imaged in the Habitable Zone of α Cen A. I. Observations, Orbital and Physical Properties, and Exozodi Upper Limits
https://arxiv.org/abs/2508.03814

Worlds Next Door: A Candidate Giant Planet Imaged in the Habitable Zone of α Cen A. II. Binary Star Modeling, Planet and Exozodi Search, and Sensitivity Analysis
https://arxiv.org/abs/2508.03812

eramey16/habitex: HabitEx: v0.0.2
https://zenodo.org/records/16756123

One-third of Sun-like stars are born with misaligned planet-forming disks
https://www.nature.com/articles/s41586-025-09324-0

The tidal interaction of an orbiting giant planet with a star near the Kraft break: the excitation of r-modes and the retention of orbital and spin angular momenta misalignment
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1292/8223398

Uniform Reanalysis of JWST MIRI 15 μm Exoplanet Eclipse Observations Using Frame-normalized Principal Component Analysis
https://iopscience.iop.org/article/10.3847/2041-8213/adee0d

Water Detection in the Interstellar Object 3I/ATLAS
https://arxiv.org/abs/2508.04675

Future Exoplanet Research: Radio Detection and Characterization
https://link.springer.com/rwe/10.1007/978-3-319-30648-3_159-2

A Search for Transiting Exocomets in TESS Sectors 1-26
https://arxiv.org/abs/2508.04673

A New Approach to Compiling Exoatmospheric Target Lists And Quantifying the Ground-Based Resources Needed to Vet Them
https://arxiv.org/abs/2508.03801

August 06, 2025 updates

A Theoretical Analysis of a ‘3i/ATLAS SuperNova Bomb’: An Artificial Stellar Destabilization Event via Interstellar Probe
https://zenodo.org/records/16741419

The Effect of Luminosity Outbursts on the Abundance of Pebbles and Their Ice Mantles in Protoplanetary Disks
https://link.springer.com/article/10.1134/S1063772925701896

Planet Earth in reflected and polarized light – II. Refining contrast estimates for rocky exoplanets with ELT and HWO
https://www.aanda.org/articles/aa/full_html/2025/08/aa54831-25/aa54831-25.html

Changing disc compositions via internal photoevaporation – II. M dwarf systems
https://www.aanda.org/articles/aa/full_html/2025/08/aa53904-25/aa53904-25.html

Validation of TESS Planet Candidates with Multicolor Transit Photometry and TRICERATOPS+
https://iopscience.iop.org/article/10.3847/1538-3881/ade68b

Bifurcated Evolutionary Pathways in Multiplanet Systems Driven by Misaligned Protoplanetary Disks
https://iopscience.iop.org/article/10.3847/2041-8213/adef03

Spectral Characteristics of Interstellar Object 3I/ATLAS from SOAR Observations
https://arxiv.org/abs/2508.02777

Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS
https://arxiv.org/abs/2508.02934

Radiative Nonideal MHD Simulations of Inner Protoplanetary Disks: Temperature Structures, Asymmetric Winds, and Episodic Surface Accretion
https://arxiv.org/abs/2508.03624

August 05, 2025 updates

Tutorial Notebooks: Athena++ Simulations and Cloudy Post-Processing for Escaping Exoplanet Atmospheres
https://zenodo.org/records/16687970

Investigating the Binary Source Degeneracy for Wide-orbit Planets
https://iopscience.iop.org/article/10.3847/1538-3881/adeb76

A Multispecies Atmospheric Escape Model with Excited Hydrogen and Helium: Application to HD209458b
https://iopscience.iop.org/article/10.3847/1538-4357/ade3c9

Enhancing Exoplanet Surveys via Physics-informed Machine Learning
https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/abs/enhancing-exoplanet-surveys-via-physicsinformed-machine-learning/32B6B107092C4D24CF26BB2EF69831BC

Deep learning to classify exoplanet light curves in Kepler and TESS
https://iopscience.iop.org/article/10.1088/1674-4527/adf70e

The 2025 Release of Cloudy
https://arxiv.org/abs/2508.01102

Thermoelastic Contraction as a Suppressor of Atmospheric Escape in Close-in Exoplanets
https://arxiv.org/abs/2508.01885

Pre-discovery TESS Observations of Interstellar Object 3I/ATLAS
https://arxiv.org/abs/2508.02499

August 4, 2025 Updates

Fine-tuning the complex organic molecule formation: sulfur and CO ice as regulators of surface chemistry
https://arxiv.org/abs/2507.17595

The Great Filter as a Statistical Limit
https://www.preprints.org/manuscript/202507.1452/v3

The Linear Stein Accelerator and Gravity Vector Projector
https://www.researchgate.net/publication/393914951_The_Linear_Stein_Accelerator_and_Gravity_Vector_Projector

The Macroscopic Zeno Effect in the Literature
https://www.researchgate.net/publication/393918318_The_Macroscopic_Zeno_Effect_in_the_Literature

A high geometric albedo for LTT9779b points toward a metal-rich atmosphere and silicate clouds
https://www.aanda.org/articles/aa/full_html/2025/08/aa54303-25/aa54303-25.html

Shaping Galactic habitability: Impact of stellar migration and gas giants
https://www.aanda.org/articles/aa/full_html/2025/08/aa55050-25/aa55050-25.html

Existence of wormhole in Dekel–Zhao dark matter halo
https://www.sciencedirect.com/science/article/abs/pii/S2212686425002353

Planets and planetesimals at cosmic dawn: Vortices as planetary nurseries
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf1258/8220041

Biosignature preservation in FaRLiP cyanobacteria after prolonged desiccation and its relevance to space missions searching for life
https://www.cambridge.org/core/journals/international-journal-of-astrobiology/article/biosignature-preservation-in-farlip-cyanobacteria-after-prolonged-desiccation-and-its-relevance-to-space-missions-searching-for-life/05A20661DF4064D8D3CD655477C15DB2

Towards the Habitable Worlds Observatory: 1D CNN Retrieval of Reflection Spectra from Evolving Earth Analogs
https://arxiv.org/abs/2508.00076

Reliability of 1D radiative-convective photochemical-equilibrium retrievals on transit spectra of WASP-107b
https://arxiv.org/abs/2508.00177

Development of Space Qualified Signal Processing Readout Electronics for HabWorlds and Origins Space Telescope Detector and Arrays
https://arxiv.org/abs/2508.00322

Formation of Planetesimals in the Outer Solar System
https://arxiv.org/abs/2508.00369

Predictions of dust continuum observations of circumplanetary disks with ngVLA: A case study of PDS 70 c
https://arxiv.org/abs/2508.00393

Temporal Evolution of the Third Interstellar Comet 3I/ATLAS: Spin, Color, Spectra and Dust Activity
https://arxiv.org/abs/2508.00808

August 01, 2025 updates

A Rationale for Proposing an Interstellar Arrival Sentinel
https://bis-space.com/shop/product/jbis-078-01-0020/

The ESPRESSO transmission spectrum of HD189733 b – Extracting the planetary sodium and lithium signatures amid stellar contamination
https://www.aanda.org/articles/aa/full_html/2025/08/aa54785-25/aa54785-25.html

The Role of Tectonic Luck in Long-Term Habitability of Abiotic Earth-like Planets
https://arxiv.org/abs/2507.23124

The Hot Neptune Initiative (HONEI) II. TOI-5795 b: A hot super-Neptune orbiting a metal-poor star
https://arxiv.org/abs/2507.23413