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.

April 9, 2021 updates

Revision of “Dependence of climate states of gray atmosphere on solar constant: From the runaway greenhouse to the snowball states” by Ishiwatari et al. (2007)

Discovery of the First Interstellar Comet and the Spatial Density of Interstellar Objects in the Solar Neighborhood

Extending a grid of hydrodynamic planetary upper atmosphere models

The Trouble with “Puddle Thinking”: A User’s Guide to the Anthropic Principle

April 8, 2021 updates

Irradiance Variations of the Sun and Sun-Like Stars – Overview of Topical Collection

Five carbon- and nitrogen-bearing species in a hot giant planet’s atmosphere

Transit Analysis of HATS-4 b by Citizen Scientists

Quantifying the Classification of Exoplanets: in Search for the Right Habitability Metric

RAFTER: Ring Astrometric Field Telescope for Exo-planets and Relativity

A transit timing variation observed for the long-period extremely low density exoplanet HIP 41378

April 7, 2021 updates

A search for a fifth planet around HR 8799 using the star-hopping RDI technique at VLT/SPHERE

Wide-orbit exoplanets are common. Analysis of nearly 20 years of OGLE microlensing survey data

OGLE-2018-BLG-1185b : A Low-Mass Microlensing Planet Orbiting a Low-Mass Dwarf

Significant improvement in planetary system simulations from statistical averaging

Large density deficit of Earth’s core revealed by a multi-megabar primary pressure scale

April 6, 2021 updates

High-Accuracy Thrust Measurements of the EMDrive and Elimination of False-Positive Effects

Evolutionary Panspermia: Planets Micro-Life and Beyond

Efficiency of the oxygenic photosynthesis on Earth-like planets in the habitable zone

Of Aliens and Exoplanets: Why the search for life, probably, requires the search for water

Warm Jupiters in TESS Full-Frame Images: A Catalog and Observed Eccentricity Distribution for Year 1

High pCO2 reduces sensitivity to CO2 perturbations on temperate, Earth-like planets throughout most of habitable zone

April 5, 2021 updates

Solar Sail Propulsion by 2050: An Enabling Capability for Heliophysics Missions

NASA’s Space Launch System Capabilities for Ultra-High C3 Missions

Ectogenesis for survival in deep space and deep time: reply to Gale and Wandel

Near-term self-replicating probes – A concept design

Astrobiology of life on Earth

Magnetic and tidal migration of close-in planets. Influence of secular evolution on their population

TRAPPIST Habitable Atmosphere Intercomparison (THAI) workshop report

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