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.

September 16, 2026 Updates

Stellar Ages of M Dwarf Hosts of Temperate Sub-Neptunes
https://arxiv.org/abs/2609.17505

Resolving core-envelope degeneracies in giant planets and sub-Neptunes: Constraining the equivalence in the presence of dilute gradients
https://www.aanda.org/articles/aa/full_html/2026/09/aa60091-26/aa60091-26.html

The JWST weather report: Unravelling the atmospheric variability of isolated worlds using principal component analysis
https://www.aanda.org/articles/aa/full_html/2026/09/aa60109-26/aa60109-26.html

Rescuing Kepler’s False Positives: A Possible Habitable Zone Exoplanet in the Triple Star System KOI-1623
https://arxiv.org/abs/2609.16201

No statistically significant evidence for a correlation between stellar and planetary composition
https://arxiv.org/abs/2609.17159

September 10, 2026 Updates

Probing Ancient Biosignatures: Laser Mass Spectrometric Analysis of the 3.33 Ga Josefsdal Chert Using Laboratory and Space-prototype Instrumentation
https://iopscience.iop.org/article/10.3847/PSJ/ae9839

Interstellar Complex Organic Molecules and Molecular Outflows in NGC 1333 IRAS 4B and 4B’ Observed Using NOEMA
https://arxiv.org/abs/2609.06295

That’s no moon: Exomoon survival and detection limitations
https://arxiv.org/abs/2609.07320

Shaving the Outskirts of Planetary Systems Probed by Roman via Stellar Flybys
https://arxiv.org/abs/2609.06112

The effect of the atmospheric C/O ratio on interiors of hot Jupiters
https://arxiv.org/abs/2609.07278

September 9, 2026 Updates

Project Setu: 3D Multi-Physics Design and Spaceflight-Validated Framework for a 0.20c Relativistic Lightsail
https://arxiv.org/abs/2609.06156

The Discovery of K2-232c: Divergent Formation Histories for Hot and Warm Jupiters Based on Outer Companion Eccentricity
https://arxiv.org/abs/2609.09077

JWST Excludes Exomoons Down to 0.1 Earth Radii Around a Rocky, Temperate Exoplanet
https://arxiv.org/abs/2609.05301

A Homogeneous Survey of JWST MIRI Transmission Spectra of 10 Exoplanets
https://arxiv.org/abs/2609.05264

Interplanetary Dust Ablation Seeds Silicate Clouds in Exoplanet Atmospheres
https://arxiv.org/abs/2609.08960

Sea Ice as an Origin of Life Location for Hycean and Ocean Worlds
https://arxiv.org/abs/2609.07818