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

You can now search our database of interstellar updates and find items of interest to you.

November 23, 2023 updates

The Odds on Alpha Centauri

Is Interstellar Flight Inevitable?

Eavesdropping on the Neighbors

Differential aperture photometry and digital coronagraphy with PRAIA

Exoplanets detection limits using spectral cross-correlation with spectro-imaging. An analytical model applied to the case of ELT-HARMONI

The SOPHIE search for northern extrasolar planets-XIX. A system including a cold sub-Neptune potentially transiting a V = 6.5 star HD88986

β Pictoris b through the eyes of the upgraded CRIRES+

KMT-2023-BLG-1431Lb: A New q<10−4 Microlensing Planet from a Subtle Signature

November 22, 2023 updates

Screening Earth Analog Exoplanets on the Basis of a Predicted Nitrogen over Phosphorus Ratio

Using a Quench Level Approximation to Estimate the Effect of Metallicity on the Abundances of N-bearing Species in H2-dominated Atmospheres

Future trajectories of the Solar System: dynamical simulations of stellar encounters within 100 au

SO2, silicate clouds, but no CH4 detected in a warm Neptune

Characterising TOI-732 b and c: new insights on the M-dwarf radius and density valley

The mass-radius relation of exoplanets, revisited

Hyperwave: Hyper-Fast Communication within General Relativity

November 21, 2023 updates

Constraining Background N2 Inventories on Directly Imaged Terrestrial Exoplanets to Rule Out O2 False Positives

Analyzing light curves to highlight phenomena and trends in planetary systems that house terrestrial exoplanets

Optical constants of exoplanet haze analogs from 0.3 to 30 microns : Comparative sensitivity between spectrophotometry and ellipsometry

Water content of rocky exoplanets in the habitable zone

The GAPS Programme at TNG L — TOI-4515 b: An eccentric warm Jupiter orbiting a 1.2 Gyr-old G-star

November 20, 2023 Updates

The Human Challenges of Conquering Space and Colonizing Other Worlds

Corrections of errors in special relativity theory and the influence of paradoxes on it

Cooperative Evolutionary Pressure and Diminishing Returns Might Explain the Fermi Paradox: On What Super-AIs Are Like and Why We Don’t See Them

Why are Mountaintops Cold? The Transition of Surface Lapse Rate on Dry Planets

Giant Outer Transiting Exoplanet Mass (GOT ‘EM) Survey: III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-Transit Jupiter Orbiting TOI-2010

Calibration Unit Design for High-Resolution Infrared Spectrograph for Exoplanet Characterization (HISPEC)

Forming Giant Planets Around Late-M Dwarfs: Pebble Accretion and Planet-Planet Collision

Wavelet Transforms of Microlensing Data: Denoising, Extracting Intrinsic Pulsations, and Planetary Signals

Planetary Entropy Production as a Thermodynamic Constraint for Exoplanet Habitability