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.

April 03, 2026 updates

Three Thousand Motion-Confirmed L and T Dwarf Candidates from the Backyard Worlds:~Planet 9 Citizen Science Project
https://arxiv.org/abs/2604.01323

Hot Rocks Survey V: Secondary Eclipse Photometry of GJ 3473 b with JWST/MIRI
https://arxiv.org/abs/2604.02332

Masses of Potentially Habitable Planets Characterized by the Habitable Worlds Observatory
https://arxiv.org/abs/2603.11146

PDRs4All: XVIII. JWST-NIRCam photometric properties of protoplanetary disks in the Orion Nebula Cluster
https://www.aanda.org/articles/aa/full_html/2026/04/aa58551-25/aa58551-25.html

Dynamics of Y dwarf atmospheres
https://www.aanda.org/articles/aa/full_html/2026/04/aa56972-25/aa56972-25.html

Unusually Hot Interiors Could Reconcile the Missing Methane Problem for Warm-to-Hot Exoplanets with Hydrogen Atmospheres
https://arxiv.org/abs/2604.01672

Semianalytical Accretion-Tracer Emission: Forming Planets Are Intrinsically Faint
https://arxiv.org/abs/2510.00138

Toward a Physics of the Ceiling: Structural Limits on the Evolution of Advanced Civilizations and the Emergence of Compact Final Forms
https://bis-space.com/shop/product/jbis-079-02-0044/

We the Living: There is absolutely nothing wrong with the species-level perspective on space settlement
https://bis-space.com/shop/product/jbis-079-01-0021/

Orbit to Interstellar: A Kevlar Tether Deployment System
https://bis-space.com/shop/product/jbis-079-03-0074/

Laser-ZPE Interstellar Propulsion Revisited
https://bis-space.com/shop/product/jbis-079-02-0040/

Activity of the K4 Dwarf HAT-P-11 and Mass Loss of the Atmosphere of Its Exoplanet HAT-P-11 b
https://link.springer.com/article/10.1134/S1063772926700095

No thick atmosphere around TRAPPIST-1 b and c from JWST thermal phase curves
https://www.nature.com/articles/s41550-026-02806-9

Modeling the risk of airborne transmission of respiratory viruses in microgravity
https://www.nature.com/articles/s41526-026-00590-4

Bridging Solar and Stellar Physics: Role of SDO in Understanding Stellar Active Regions and Atmospheric Heating
https://link.springer.com/article/10.1007/s11207-026-02634-0

HATPI Preperihelion Time-series Photometry of the Interstellar Comet 3I/ATLAS
https://iopscience.iop.org/article/10.3847/1538-3881/ae4a99

NASA’s Pandora SmallSat Mission: Simulated Modeling and Retrieval of Near-infrared Exoplanet Transmission Spectra
https://iopscience.iop.org/article/10.3847/1538-3881/ae4d3c

Topography-induced Stationary Waves and the Onset of Nightside Warming on Rocky Planets around M Dwarf Stars
https://iopscience.iop.org/article/10.3847/1538-4357/ae4485

High-resolution Mid-infrared Spectroscopy of SVS13-A with EXES/SOFIA: The Surprisingly High CH3OH/H2O Ratio in the Planet-forming Zone of a Solar Mass Protostar
https://iopscience.iop.org/article/10.3847/2041-8213/ae5487

Modeling Wind-Driven Waves on Other Planets: Applications to Mars, Titan, and Exoplanets
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JE009490

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025JE009110

Better origin(s) of life research through collaboration across disciplines
https://www.sciencedirect.com/science/article/pii/S2666386426001268

What it takes to solve the origins of life: An integrated review. Part 2: Theoretical methods and emerging trends
https://www.sciencedirect.com/science/article/pii/S2666386426001177

Molecular Geometry as Projection: Water, Proteins, and the Cosmic Distribution of Pre-Biotic Chemistry
https://zenodo.org/records/19411087

April 2, 2026 updates

Geographic Information Systems for Space Science Education: A Review
https://link.springer.com/article/10.1007/s42330-026-00422-3

The Science of the Einstein Telescope
https://iopscience.iop.org/article/10.1088/1475-7516/2026/03/081

Differentiable Optics with dLux II: Optical Design Maximising Fisher Information
https://arxiv.org/abs/2406.08704v4

Beyond Beryllium: AI-Accelerated Materials Discovery for Interstellar Spacecraft Shielding
https://arxiv.org/abs/2604.00571

From Space Dust to Protocells: Micrometeorites in Early Cellular Evolution
https://journals.sagepub.com/doi/10.1177/15311074261434670

Chemical Routes to Primitive Membranes: Prebiotic Lipid Formation at the Origin of Life
https://www.mdpi.com/2075-1729/16/3/497

Spiral formation caused by late infall onto protoplanetary disks
https://www.aanda.org/articles/aa/full_html/2026/04/aa58773-25/aa58773-25.html

High-resolution Spectroscopic Atmospheric Studies of Five Hot Jupiters Across the Edge of the Neptune Desert
https://iopscience.iop.org/article/10.3847/1538-3881/ae4de5

Information content of JWST transmission spectroscopy of the exoplanet HAT-P-12b from the optical to the mid-infrared
https://arxiv.org/abs/2604.01219

Focal plane wavefront control with model-based reinforcement learning
https://arxiv.org/abs/2604.00993

Long-term activity cycles in planetary M stars observed with SOPHIE
https://www.aanda.org/articles/aa/full_html/2026/04/aa56087-25/aa56087-25.html

TESS Planet Occurrence Rates Reveal the Disappearance of the Radius Valley Around Mid-to-Late M Dwarfs
https://arxiv.org/abs/2602.23364

Exploring hidden cosmic highways: stability and orbital dynamics of quasi-Lagrangian points in the Kepler-1625 exoplanetary system
https://link.springer.com/article/10.1007/s12036-026-10141-8

April 1, 2026 updates

The biodesign framework: professional biodesign practices
https://iopscience.iop.org/article/10.1088/1748-3190/ae54ef

An innovative alternative to traditional funding streams for extragalactic astronomy
https://arxiv.org/abs/2603.29340

The Influence of Clouds and Deuterium-burning on Brown Dwarf Habitable Zones
https://iopscience.iop.org/article/10.3847/1538-4357/ae4fb0

On the importance of laboratory experiments for interpreting exoplanet observations
https://arxiv.org/abs/2603.24809

New Constraints on the M Dwarf Cosmic Shoreline from a Galaxy Far, Far Away
https://arxiv.org/abs/2603.29743

Homogeneous stellar parameters for 717,807 TESS FGK stars using Gaia DR3
https://arxiv.org/abs/2603.29817

Data-driven discovery of dynamo cycle equations
https://arxiv.org/abs/2603.29079

Protoplanetary Disk Evolution in a Low-Metallicity Environment: JWST’s First Mid-Infrared Census of Low-Mass Stars
https://arxiv.org/abs/2603.29007

Where to Search For Life: Evidence from narrative sources with established predictive efficacy
https://arxiv.org/abs/2603.28883

First Detection of Exoplanetary Cannabinoids: Evidence for THC and CBD in the Atmosphere of K2-18b
https://arxiv.org/abs/2603.29700

Antimatter Propulsion for Interstellar Travel via Positron Production from Potassium-40 Rich Biological Matter
https://arxiv.org/abs/2603.29635

The SPHEREx Instrument: Calibration, testing and performance measurements of the NIR 2 spectroscopic surveyor from the laboratory to in-orbit commissioning
https://arxiv.org/abs/2603.29835

AI Cosplaying as Astrophysicists: A Controlled Synthetic-Agent Study of AI-Assisted Astrophysical Research Workflows
https://arxiv.org/abs/2603.29039

The WEAVE acquisition and guiding software: pattern recognition-based acquisition and multi-fibre guiding
https://arxiv.org/abs/2603.30044

March 31, 2026 updates

Revisiting Darwin’s Warm Little Pond in the 21st Century: Land-Based Scenarios for Life’s Origins
https://journals.sagepub.com/doi/full/10.1177/15311074261434368

The Planetary and its uses: Grounding political economy in an astrobiological perspective
https://journals.sagepub.com/doi/full/10.1177/20530196261434014

Giant Planet Lagrange Points L2 as Locations for Photon Sail Manufacturing Facilities
https://bis-space.com/shop/product/jbis-079-03-0107/

Optimal Energy and Resource Distribution in Kardashev Type III Civilizations
https://bis-space.com/shop/product/jbis-079-02-0052/

Ultra-Long Wave Civilization Filter: a Selective Approach to Interstellar Communication
https://bis-space.com/shop/product/jbis-079-02-0038/

From assembly to first light: integration, testing, and commissioning of the Henrietta Exoatmosphere spectrograph
https://spie.org/astronomical-telescopes-instrumentation/presentation/From-assembly-to-first-light–integration-testing-and-commissioning/14149-411

A cloudy fit to the atmosphere of WASP-107 b
https://www.aanda.org/articles/aa/full_html/2026/04/aa58447-25/aa58447-25.html

The influence of hypothetical exomoons on planetary thermal phase curves
https://www.aanda.org/articles/aa/full_html/2026/04/aa55379-25/aa55379-25.html

From dust to planets – II. Effects of wide binary companions and external photoevaporation on planetesimal and embryo formation
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/stag602/8551344

Orbyts: Transit timing variations
https://academic.oup.com/astrogeo/article/67/2/2.27/8540141

Identifying Exoplanets with Deep Learning. VI. Enhancing Neural Network Mitigation of Stellar Activity RV Signals with Additional Metrics
https://iopscience.iop.org/article/10.3847/1538-3881/ae45fd

Planet−Disk Interactions and the Convective Overstability. I. Low-mass Planets
https://iopscience.iop.org/article/10.3847/1538-4357/ae4d15

ASTER — Agentic Science Toolkit for Exoplanet Research
https://arxiv.org/abs/2603.26953

Recent Progress in the Characterization of the Atmosphere of Exoplanets: Observations, Models
https://acopen.umsida.ac.id/index.php/acopen/article/view/13828

The Exploration of Exoplanets Based on The Transit Method
https://drpress.org/ojs/index.php/ajst/article/view/33322

GSF-22 -Resonant Chains on the Scale Manifold: From Kepler Projection to Corridor Capture in Exoplanet Systems
https://www.researchgate.net/publication/402124699_GSF-22_-Resonant_Chains_on_the_Scale_Manifold_From_Kepler_Projection_to_Corridor_Capture_in_Exoplanet_Systems

Origins of Compact Mean-Motion Resonances: Evidence for Long-Range Migration and the Case of Kepler-36
https://arxiv.org/abs/2603.27093

Quantifying Building Blocks of Life in Planetary Analog Materials: Implications for Prebiotic Chemistry and Biosignature Identification
https://arxiv.org/abs/2603.27598

Closeby Habitable Exoplanet Survey (CHES). V. Planetary Parameters Derived from Angular Separation Variations
https://arxiv.org/abs/2603.27603

Exoformer: Accelerating Bayesian atmospheric retrievals with transformer neural networks
https://arxiv.org/abs/2603.27623

Planet-star interactions with precise transit timing. V. Tidal decay of hot Jupiters through wave breaking
https://arxiv.org/abs/2603.28157

Weighing the mass of LHS 3844 b
https://arxiv.org/abs/2603.28237

Mass determination of the ultra-short-period planet LHS 3844 b. First K-band radial velocity measurements with CRIRES+
https://arxiv.org/abs/2603.28238

The KPF-SLOPE Survey – Small, Compact Multi-Planet Systems Appear Spin-Orbit Aligned
https://arxiv.org/abs/2603.23713

Asymptotic stability of laser-driven lightsails: Orders of magnitude enhancement by optical dispersion engineering in gratings
https://arxiv.org/abs/2603.26991

March 30, 2026 Updates

The GAPS Programme at the TNG LXXII. TOI-5734b: A hot sub-Neptune orbiting a relatively young K dwarf with an Earth-like density★
https://www.aanda.org/articles/aa/full_html/2026/04/aa55931-25/aa55931-25.html

Inhomogeneous magnetic coupling in exoplanets: The stop and go of WASP-18 b’s atmospheric flows
https://www.aanda.org/articles/aa/full_html/2026/04/aa58210-25/aa58210-25.html

A tension between dust and gas radii: The role of substructures and external photoevaporation in protoplanetary disks
https://www.aanda.org/articles/aa/full_html/2026/04/aa54500-25/aa54500-25.html

Exocomets of β Pictoris II. Two dynamical families of exocomets simulated with REBOUND
https://www.aanda.org/articles/aa/full_html/2026/04/aa56139-25/aa56139-25.html

Dynamics of the TWA 7 planetary system and possibility of an additional planet
https://www.aanda.org/articles/aa/full_html/2026/04/aa59112-26/aa59112-26.html

The PAIRS project: a global formation model for planets in binaries I. Effect of disc truncation on the growth of S-type planets
https://www.aanda.org/articles/aa/full_html/2026/04/aa57243-25/aa57243-25.html

The PAIRS project: a global formation model for planets in binaries II. Gravitational perturbation effects from secondary stars
https://www.aanda.org/articles/aa/full_html/2026/04/aa57244-25/aa57244-25.html

Lost in space
https://www.sciencedirect.com/science/article/abs/pii/S0262407926005130

Interstellar comet has water unlike any in our solar system
https://www.sciencedirect.com/science/article/abs/pii/S0262407926005051

Inside the drive to take antimatter on a continental road trip
https://www.sciencedirect.com/science/article/abs/pii/S0262407926004938

Structural analysis of aerographite solar sail topologies
https://www.sciencedirect.com/science/article/abs/pii/S009457652600216X

Direct Imaging for the Debris Disk around epsilon Eridani with the Cool-planet Imaging Coronagraph
https://iopscience.iop.org/article/10.1088/1674-4527/ae4a03

Warm Debris Disk Candidates around Nearby FGK Stars from LAMOST DR12
https://iopscience.iop.org/article/10.1088/1674-4527/ae4bb0

A Possible Mechanism to Explain the Prograde Equatorial Jet of a Jupiter-like Gaseous Giant
https://iopscience.iop.org/article/10.3847/2041-8213/ae518c

“Popcorn Planets” Are Not Actively Inflated by Eccentricity Tides
https://iopscience.iop.org/article/10.3847/2041-8213/ae517e

The First Dedicated Survey of Atmospheric Escape from Planets Orbiting F Stars
https://iopscience.iop.org/article/10.3847/1538-3881/ae4e17

TOI-7169 b: A Hot Jupiter Transiting a Metal-Poor Star
https://arxiv.org/abs/2603.25787

The role of inner disk edges in shaping ultra-short-period planet systems around late M dwarfs
https://arxiv.org/abs/2603.26204

The atmosphere of K2-18 b: The role of hazes, clouds and photoelectrons
https://arxiv.org/abs/2603.26474