TRAPPIST-1

The Dynamics Of The TRAPPIST-1 System In The Context Of Its Formation

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

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

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). 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

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

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

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

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

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

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

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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