Alpha Centauri

Water Content Trends In K2-138 And Other Low-mass Multiplanetary Systems

Water Content Trends In K2-138 And Other Low-mass Multiplanetary Systems

Super-Earths and sub-Neptunes have been found simultaneously in multiplanetary systems, suggesting that they are appropriate to study composition and formation within the same environment. We perform a homogeneous interior structure analysis of five multiplanetary systems to explore the compositional trends and its relation with planet formation.

Extrasolar Planets

Effects Of UV Stellar Spectral Uncertainty On The Chemistry Of Terrestrial Atmospheres

Effects Of UV Stellar Spectral Uncertainty On The Chemistry Of Terrestrial Atmospheres

The upcoming deployment of JWST will dramatically advance our ability to characterize exoplanet atmospheres, both in terms of precision and sensitivity to smaller and cooler planets.

Biosignatures & Paleobiology

Prospects For Water Vapor Detection In The Atmospheres Of Temperate And Arid Rocky Exoplanets Around M-dwarf Stars

Prospects For Water Vapor Detection In The Atmospheres Of Temperate And Arid Rocky Exoplanets Around M-dwarf Stars

Detection of water vapor in the atmosphere of temperate rocky exoplanets would be a major milestone on the path towards characterization of exoplanet habitability.

Astrobiology (general)

The DRAKE Mission: Finding The Frequency Of Life In The Cosmos

The DRAKE Mission: Finding The Frequency Of Life In The Cosmos

In the search for life in the Universe, exoplanets represent numerous natural experiments in planet formation, evolution, and the emergence of life.

Titan

Methane-saturated Layers Limit The Observability Of Impact Craters On Titan

Methane-saturated Layers Limit The Observability Of Impact Craters On Titan

As the only icy satellite with a thick atmosphere and liquids on its surface, Titan represents a unique end-member to study the impact cratering process.

TRAPPIST-1

ExoCAM: A 3D Climate Model for Exoplanet Atmospheres

ExoCAM: A 3D Climate Model for Exoplanet Atmospheres

The TRAPPIST-1 Habitable Atmosphere Intercomparison (THAI) project was initiated to compare 3D climate models that are commonly used for predicting theoretical climates of habitable zone extrasolar planets.

Impact events

Large Impacts Onto The Early Earth: Planetary Sterilization And Iron Delivery

Large Impacts Onto The Early Earth: Planetary Sterilization And Iron Delivery

Late accretion onto the Hadean Earth included large impacts that could have influenced early habitability, either by sterilizing the planet or alternatively catalyzing the origin of life by delivering iron required to create a reducing environment/atmosphere.

Extrasolar Planets

Terrestrial Planet Formation From Lost Inner Solar System Material

Terrestrial Planet Formation From Lost Inner Solar System Material

Two fundamentally different processes of rocky planet formation exist, but it is unclear which one built the terrestrial planets of the solar system.

Habitable Zones & Global Climate

Photochemical Runaway in Exoplanet Atmospheres: Implications for Biosignatures

Photochemical Runaway in Exoplanet Atmospheres: Implications for Biosignatures

About 2.5 billion years ago, microbes learned to harness plentiful Solar energy to reduce CO2 with H2O, extracting energy and producing O2 as waste.

Moons and Icy Worlds

Evidence For An Internal Ocean On Mimas

Evidence For An Internal Ocean On Mimas

A Southwest Research Institute scientist set out to prove that the tiny, innermost moon of Saturn was a frozen inert satellite and instead discovered compelling evidence that Mimas has a liquid internal ocean.

Habitable Zones & Global Climate

Weathering Rocks Hold Clues To Earth's Great Oxidation Event

Weathering Rocks Hold Clues To Earth's Great Oxidation Event

About 2.4 billion years ago, Earth's atmosphere underwent what is called the Great Oxidation Event (GOE). Prior to the GOE, early Earth had far less molecular oxygen than we have today. After the GOE, molecular oxygen began to increase in abundance, eventually making life like ours possible.

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