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.

May 05, 2025 Updates

Putting holes in a sail to reach the stars
https://pubs.aip.org/physicstoday/online/44239/Putting-holes-in-a-sail-to-reach-the-stars

Ground to Dust: Collisional Cascades and the Fate of Kardashev II Megaswarms
https://arxiv.org/abs/2504.21151

Exploring the atmosphere of GJ 1132 b with CRIRES+
https://www.aanda.org/articles/aa/full_html/2025/05/aa53163-24/aa53163-24.html

Signs of alien life on exoplanet K2-18b may actually be nothing at all
https://www.sciencedirect.com/science/article/abs/pii/S0262407925006888

Unidentified aerospace-undersea phenomena (UAP) status and outlook
https://www.sciencedirect.com/science/article/abs/pii/S0376042125000211

Four Planets Found through Microlensing Events Involving Faint Source Stars
https://iopscience.iop.org/article/10.3847/1538-3881/adc5e7

AI scientist ‘team’ joins the search for extraterrestrial life
https://www.nature.com/articles/d41586-025-01364-w

Can planet-planet binaries survive in star-forming regions?
https://arxiv.org/abs/2505.00762

Characterizing the Radiative-Convective Structure of Dense Rocky Planet Atmospheres
https://arxiv.org/abs/2505.00775

HD 35843: A Sun-like star hosting a long period sub-Neptune and inner super-Earth
https://arxiv.org/abs/2505.00898

Instrumentation prospects for rocky exoplanet atmospheres studies with high resolution spectroscopy
https://arxiv.org/abs/2505.01102

Bridging the Atmospheric Circulations of Hot and Warm Giant Exoplanets
https://arxiv.org/abs/2505.01397

May 02, 2025 updates

Dust density enhancements and the direct formation of planetary cores in gravitationally unstable discs
https://academic.oup.com/mnras/advance-article/doi/10.1093/mnras/staf714/8123629

HST Transmission Spectra of the Hot Neptune HD 219666 b: Detection of Water and the Challenge of Constraining Both Water and Methane
https://iopscience.iop.org/article/10.3847/1538-3881/adc684

Measurement of Methane Line Broadening in Hot Hydrogen/Helium Atmospheres at λ = 1.60–1.63 μm for Substellar Object Spectroscopy
https://iopscience.iop.org/article/10.3847/1538-4357/adc455

The Effects of Kinematic Magnetohydrodynamics on the Atmospheric Circulation of Eccentric Hot Jupiters
https://iopscience.iop.org/article/10.3847/1538-4357/adc56c

Quantified Estimation of Molecular Detections across Different Classes of Neptunian Atmospheres Using Cross-correlation Spectroscopy: Prospects for Future Extremely Large Telescopes with High-resolution Spectrographs
https://iopscience.iop.org/article/10.3847/1538-4365/adbf05

Quantifying the Fermi paradox via passive SETI: a general framework
https://arxiv.org/abs/2505.00062

Quantum-inspired exoplanet detection in the presence of experimental imperfections
https://arxiv.org/abs/2505.00064

Can Close-In Exoplanets form by Pebble Accretion?
https://arxiv.org/abs/2505.00090

Reconstructing the Free-floating Planet Mass Function with the Nancy Grace Roman Space Telescope
https://arxiv.org/abs/2505.00092

May 01, 2025 updates

Spying and the Fermi Paradox
https://uapbridge.org/spying-and-the-fermi-paradox/

Thermal Emission and Confirmation of the Frigid White Dwarf Exoplanet WD 1856+534 b
https://iopscience.iop.org/article/10.3847/2041-8213/adc9ad

JAvaScript Multimodal INformation Explorer
https://arxiv.org/abs/2504.21393

The Challenges of Detecting Gases in Exoplanet Atmospheres
https://arxiv.org/abs/2504.21788

Polka-dotted Stars: a Hierarchical Model for Mapping Stellar Surfaces Using Occultation Light Curves and the Case of TOI-3884
https://arxiv.org/abs/2504.21852

Transit Timing and Duration Variations for the Discovery and Characterization of Exoplanets in the TESS era
https://arxiv.org/abs/1706.09849

April 30, 2025 updates

Digital Discovery of Interferometric Gravitational Wave Detectors
https://journals.aps.org/prx/abstract/10.1103/PhysRevX.15.021012

Analysis of Exoplanet Habitability: Investigating Key Parameters and Environmental Influences
https://zenodo.org/records/15309145

Life by Chemical Evolution?
https://link.springer.com/book/9783662707517

Irradiated Atmospheres. II. Interplay between Scattering and Vertical-mixing-induced Energy Transport
https://iopscience.iop.org/article/10.3847/1538-4357/adc56b

Precise Near-infrared Occultation of WASP-19b with FourStar on Magellan
https://iopscience.iop.org/article/10.3847/2515-5172/add154

Escaping Helium and a Highly Muted Spectrum Suggest a Metal-Enriched Atmosphere on Sub-Neptune GJ3090b from JWST Transit Spectroscopy
https://arxiv.org/abs/2504.20428

Atmospheric C/O Ratios of Sub-Neptunes with Magma Oceans: Homemade rather than Inherited
https://arxiv.org/abs/2504.20450

Planets Across Space and Time (PAST). VI. Age Dependence of the Occurrence and Architecture of Ultra-Short-Period Planet Systems
https://arxiv.org/abs/2504.20986

Two neighbours to the ultra-short-period Earth-sized planet K2-157 b in the warm Neptunian savanna
https://arxiv.org/abs/2504.20999

Numerical simulations of the interaction between the stellar magnetic field and a planet
https://arxiv.org/abs/2504.09390

April 29, 2025 updates

Perpetual Push Against Spacetime [Locomotive Constraints of Relativistic Space Travel]
https://www.academia.edu/128047008/Perpetual_Push_Against_Spacetime_Locomotive_Constraints_of_Relativistic_Space_Travel_

Detection of Exoplanets in Transit Light Curves with Conditional Flow Matching and XGBoost
https://www.mdpi.com/2079-9292/14/9/1738

The cosmochemistry of planetary systems
https://link.springer.com/article/10.1038/s41570-025-00711-9

Age dependence of the occurrence and architecture of ultra-short-period planet systems
https://www.nature.com/articles/s41550-025-02539-1

Near-circular orbits for planets with Earth-like sizes and instellations around M and K dwarf stars
https://www.nature.com/articles/s41550-025-02532-8

An astronomer explains the extraordinary evidence scientists need to claim discoveries like extraterrestrial life
https://phys.org/news/2025-04-astronomer-extraordinary-evidence-scientists-discoveries.html

In-depth characterization of the Kepler-10 three-planet system with HARPS-N radial velocities and Kepler transit timing variations
https://www.aanda.org/articles/aa/full_html/2025/04/aa53026-24/aa53026-24.html

Closeby Habitable Exoplanet Survey (CHES). III. Retrieval of Planetary Masses in Binaries Using the N-body Model with Radial Velocity and Astrometry Synergy
https://iopscience.iop.org/article/10.3847/1538-4357/adc444

Biases from Missing a Small Planet in High Multiplicity Systems
https://iopscience.iop.org/article/10.3847/2041-8213/adcba1

Peeking under the clouds: Is exoplanet imaging with the solar gravitational lens feasible?
https://arxiv.org/abs/2504.18630

Lightning activity on a tidally locked terrestrial exoplanet in storm-resolving simulations for a range of surface pressures
https://arxiv.org/abs/2504.19883

A Search for Exoplanet Candidates in TESS 2-min Light Curves using Joint Bayesian Detection
https://arxiv.org/abs/2504.18706

On the similarities between the Trojan Wave Packets as a Single Electron Life and the Planet in the habitable zone
https://www.researchgate.net/publication/391119528_On_the_similarities_between_the_Trojan_Wave_Packets_as_a_Single_Electron_Life_and_the_Planet_in_the_habitable_zone

A Next-Generation Exoplanet Atmospheric Retrieval Framework for Transmission Spectroscopy (NEXOTRANS): Comparative Characterization for WASP-39 b Using JWST NIRISS, NIRSpec PRISM, and MIRI Observations
https://arxiv.org/abs/2504.18815

Thermodynamic constraints on the citric acid cycle and related reactions in ocean world interiors
https://arxiv.org/abs/2504.19369

The Cosmic Shoreline Revisited: A Metric for Atmospheric Retention Informed by Hydrodynamic Escape
https://arxiv.org/abs/2504.19872