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

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May 31, 2023 updates

Kepler’s last planet discoveries: two new planets and one single-transit candidate from K2 campaign 19

A 4–8 GHz Galactic Center Search for Periodic Technosignatures

TOI-1416: A system with a super-Earth planet with a 1.07d period

The origin of the terrestrial planets

Detecting Multi-Planetary Systems with Gravitational Microlensing and the Roman Space Telescope

May 30, 2023 updates

Alone But Not Lonely: Exploring for Extraterrestrial Life

Application of the HeliosX ICF Advanced Propulsion Mission Analysis Code to Perturbed Interstellar Design Models

Scattering transparency of clouds in exoplanet transit spectra

Towards Network-Based Planetary Biosignatures: Atmospheric Chemistry as Unipartite, Unweighted, Undirected Networks

On the behaviour of spin-orbit connection of exoplanets

The Orbital Eccentricity Distribution of Planets Orbiting M dwarfs

Retrieval survey of metals in six ultra-hot Jupiters: Trends in chemistry, rain-out, ionisation and atmospheric dynamics

Large Uncertainties in the Thermodynamics of Phosphorus (III) Oxide (P4O6) Have Significant Implications for Phosphorus Species in Planetary Atmospheres

The Optical Phase Curves of CoRoT-1 b

May 26, 2023 updates

Humid Evolution of Haze in the Atmosphere of Super-Earths in the Habitable Zone

Discovery Alert: See the Image – 2 Planets Orbit a Sun-like Star

A Re-appraisal of the Challenges Associated with Detecting Alien Signals and Technosignatures

Synthesis of prebiotic organics from CO2 by catalysis with meteoritic and volcanic particles

Long-wavelength pulse generation via light-sail backscattering

Effects of Ozone Levels on Climate Through Earth History

TOI-1130: A photodynamical analysis of a hot Jupiter in resonance with an inner low-mass planet

KMT-2021-BLG-1150Lb: Microlensing planet detected through a densely covered planetary-caustic signal

Polarization Criteria in Targeted SETI Observation

Transiting Exoplanet Yields for the Roman Galactic Bulge Time Domain Survey Predicted from Pixel-Level Simulations

May 25, 2023 updates

A Sign in Space

Creation and Evolution of Life in Black Hole Exoplanets

Assessment of a physics-based retrieval of exoplanet atmospheric temperatures from infrared emission spectra

Predicting the Yield of Small Transiting Exoplanets around Mid-M and Ultracool Dwarfs in the Nancy Grace Roman Space Telescope Galactic Bulge Time Domain Survey

Affordances in outer space: Forms of life, material engagement, and meaning within space exploration and SETI