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.

June 02, 2023 updates

The Occurrence Rate of Terrestrial Planets Orbiting Nearby Mid-to-late M Dwarfs from TESS Sectors 1–42

Ephemeris Updates for Seven Selected HATNet Survey Transiting Exoplanets

Assessment of a Physics-based Retrieval of Exoplanet Atmospheric Temperatures from Infrared Emission Spectra

The TESS-Keck Survey. XV. Precise Properties of 108 TESS Planets and Their Host Stars

June 01, 2023 updates

The Horizon of Future Intergalactic Travel

The PEPSI Exoplanet Transit Survey (PETS) – III. The detection of Fe I, Cr I, and Ti I in the atmosphere of MASCARA-1 b through high-resolution emission spectroscopy

Scaling K2. VI. Reduced Small-planet Occurrence in
High-galactic-amplitude Stars

Warm Jupiters Beyond the Tidal Synchronization Limit may Exhibit a Wide Range of Secondary Eclipse Depths

A Recommendation to Retire VESPA for Exoplanet Validation

Mid-to-Late M Dwarfs Lack Jupiter Analogs

Keck/KPIC Emission Spectroscopy of WASP-33b

Day-night transport induced chemistry and clouds on WASP-39b I: Gas-phase composition

Featureless transmission spectra of 12 giant exoplanets observed by GTC/OSIRIS

A Shallow Water Model Exploration of Atmospheric Circulation on Sub-Neptunes: Effects of Radiative Forcing and Rotation Period

The CARMENES search for exoplanets around M dwarfs. A sub-Neptunian mass planet in the habitable zone of HN Lib

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

1 2 273