TRAPPIST-1
The Dynamics Of The TRAPPIST-1 System In The Context Of Its Formation 
TRAPPIST-1 is an 0.09 M⊙ star, which harbours a system of seven Earth-sized planets. Two main features stand out: (i) all planets have similar radii, masses, and compositions; and (ii) all planets are in resonance.
TRAPPIST-1
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part I: Dry Cases -- The Fellowship Of The GCMs
With the commissioning of powerful, new-generation telescopes such as the JWST and the ELTs, the first characterization of a high molecular weight atmosphere around a temperate rocky exoplanet is imminent.
TRAPPIST-1
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part II: Moist Cases -- The Two Waterworlds
To identify promising exoplanets for atmospheric characterization and to make the best use of observational data, a thorough understanding of their atmospheres is needed.
TRAPPIST-1
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI). Part III: Simulated Observables -- The Return Of The Spectrum
The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI) is a community project that aims to quantify how dfferences in general circulation models (GCMs) could impact the climate prediction for TRAPPIST-1e and, subsequently its atmospheric characterization in transit.
Biosignatures & Paleobiology
Cloudy Days On Exoplanets May Hide Atmospheric Water
Water is a hot topic in the study of exoplanets, including "hot Jupiters," whose masses are similar to that of Jupiter, but which are much closer to their parent star than Jupiter is to the sun.
Extremeophiles and Extreme Environments
Working With Tardigrades On The International Space Station
Thomas Pesquet: It's time for lunch, water bears! I took my turn feeding the tardigrades. Fun fact: they have a two-week reproduction cycle, so we are now hosting three generations of them! A whole family tree of space-borne tardigrades!
Impact events
Extreme Volcanism Did Not Cause The Late Cretaceous Massive Extinction
A study published in the journal Geology rules out that extreme volcanic episodes had any influence on the massive extinction of species in the late Cretaceous.
Mars
Mars Habitability Limited By Its Small Size, Isotope Study Suggests
Water is essential for life on Earth and other planets, and scientists have found ample evidence of water in Mars' early history.
Habitable Zones & Global Climate
Analyzing The Habitable Zones Of Circumbinary Planets Using Machine Learning
Exoplanet detection in the past decade by efforts including NASA's Kepler and TESS missions has discovered many worlds that differ substantially from planets in our own Solar System, including more than 150 exoplanets orbiting binary or multi-star systems.
Venus
Early Habitability And Crustal Decarbonation Of A Stagnant-lid Venus
Little is known about the early evolution of Venus and a potential habitable period during the first one billion years. In particular, it remains unclear whether or not plate tectonics and an active carbonate-silicate cycle were present.
SETI
Stellar Gravitational Lens Engineering for Interstellar Communication and Artifact SETI
Several recent works have proposed "stellar relay" transmission systems in which a spacecraft at the focus of a star's gravitational lens achieves dramatic boosts in the gain of an outgoing or incoming interstellar transmission.
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