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.

March 24, 2023 updates

The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 μm Spectrum of the Planetary-mass Companion VHS 1256–1257 b

MOA-2020-BLG-208Lb: Cool Sub-Saturn-mass Planet within Predicted Desert

Dynamical Evolution of Closely Packed Multiple Planetary Systems Subject to Atmospheric Mass Loss

Observation and feature measurements of cloud and haze in exoplanet atmosphere based on transmission spectra

A Catalogue of Exoplanet Atmospheric Retrieval Codes

Coronal X-Ray Emission from Nearby, Low-Mass, Exoplanet Host Stars Observed by the MUSCLES and Mega-MUSCLES HST Treasury Survey Projects

Tentative detection of titanium oxide in the atmosphere of WASP-69 b with a 4m ground-based telescope

An extreme test case for planet formation: a close-in Neptune orbiting an ultracool star

March 23, 2023 updates

Acceleration of 1I/‘Oumuamua from radiolytically produced H2 in H2O ice

A New Mission Will Search for Habitable Planets at Alpha Centauri

The high-albedo, low polarization disk around HD 114082 that harbors a Jupiter-sized transiting planet – Constraints from VLT/SPHERE completed with TESS, Gaia, and radial velocities

PySME – Spectroscopy Made Easier

The Effect of Metallicity on the Nonequilibrium Abundance of Hydrogen-dominated Exoplanet Atmospheres

Rescue and Recovery as a Theological Principle, and a Key to Morality in Extraterrestrial Species

Dark Exoplanets

The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements

March 22, 2023 updates

Dynamical masses of two young transiting sub-Neptunes orbiting HD 63433

From exo-Earths to exo-Venuses: Flux and polarization signatures of reflected light

Discovery of a massive giant planet with extreme density around a sub-giant star TOI-4603

Forming super-Mercuries: The role of stellar abundances

Comparing Apples with Apples: Robust Detection Limits for Exoplanet High-Contrast Imaging in the Presence of non-Gaussian Noise

March 21, 2023 updates

Astronauts that hibernate on long spaceflights is not just for sci-fi. We could test it in 10 years.

Activity of TRAPPIST-1 Analogs

A full transit of v2 Lupi d and the search for an exomoon in its Hill sphere with CHEOPS

The Breakthrough Listen Search for Intelligent Life: Nearby Stars’ Close Encounters with the Brightest Earth Transmissions

TOI-1695 b: A Water World Orbiting an Early-M Dwarf in the Planet Radius Valley

Direct Imaging Explorations for Companions around Mid–Late M Stars from the Subaru/IRD Strategic Program

Decomposition of Benzene during Impacts in N2-dominated Atmospheres

Bio-techno-signature Monitoring and Communication Guideposts for Extraterrestrial Life

March 17, 2023 updates

Sub-Jovian desert of exoplanets at its boundaries – Parameter dependence along the main sequence

Observability of silicates in volatile atmospheres of super-Earths and sub-Neptunes – Exploring the edge of the evaporation desert

Removal of Hot Saturns in Mass–Radius Plane by Runaway Mass Loss

A Gap-sharing Planet Pair Shaping the Crescent in HD 163296: A Disk Sculpted by a Resonant Chain

A persistent influence of supernovae on biodiversity over the Phanerozoic

An Origin of Narrow Extended Structure in the Interstellar Medium: An Interstellar Contrail Created by a Fast-moving Massive Object

Using Machine Learning to determine the most important features in exoplanet verification

OGLE-2016-BLG-1195 AO: Lens, Companion to Lens or Source, or None of the Above?

Solar center-to-limb variation in Rossiter-McLaughlin and exoplanet transmission spectroscopy

ExoplANNET: A deep learning algorithm to detect and identify planetary signals in radial velocity data

Detection of a high-velocity sodium feature on the ultra-hot Jupiter WASP-121 b

On the origin of the non-detection of metastable HeI in the upper atmosphere of the hot Jupiter WASP-80b

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