SETI

Science with an ngVLA: SETI Searches for Evidence of Intelligent Life in the Galaxy

Science with an ngVLA: SETI Searches for Evidence of Intelligent Life in the Galaxy

Radio SETI experiments aim to test the hypothesis that extraterrestrial civilizations emit detectable signals from communication, propulsion, or other technologies.

Astrochemistry

Science with an ngVLA: Prebiotic Molecules

Science with an ngVLA: Prebiotic Molecules

Extraterrestrial amino acids, the chemical building blocks of the biopolymers that comprise life as we know it on Earth are present in meteoritic samples.

Habitable Zones & Global Climate

Algorithm Takes Search for Habitable Planets to the Next Level

Algorithm Takes Search for Habitable Planets to the Next Level

An international team of scientists, including high performance computing (HPC) experts from the King Abdullah University for Science and Technology (KAUST), astronomers from the Paris Observatory and the National Astronomical Observatory of Japan (NAOJ), in collaboration with NVIDIA, is taking the search for habitable planets and observation of first epoch galaxies to the next level.

Europa

Condition For The Deflection of Vertical Cracks at Dissimilar Ice Interfaces On Europa

Condition For The Deflection of Vertical Cracks at Dissimilar Ice Interfaces On Europa

The surface of Europa contains many quasi-circular morphologies called lenticulae. Although the formation mechanism of lenticulae is not understood, sill intrusion from the subsurface ocean is one promising hypothesis.

Astrobiology (general)

Life-Detection Technologies for the Next Two Decades

Life-Detection Technologies for the Next Two Decades

Since its inception six decades ago, astrobiology has diversified immensely to encompass several scientific questions including the origin and evolution of Terran life, the organic chemical composition of extraterrestrial objects, and the concept of habitability, among others.

Extremeophiles and Extreme Environments

Harvesting Solar Fuels Through a Bacterium's Unusual Appetite For Gold

Harvesting Solar Fuels Through a Bacterium's Unusual Appetite For Gold

A bacterium named Moorella thermoacetica won't work for free. But UC Berkeley researchers have figured out it has an appetite for gold. And in exchange for this special treat, the bacterium has revealed a more efficient path to producing solar fuels through artificial photosynthesis.

Moons and Icy Worlds

Ganymede Shows Evidence of Past Strike-slip Faulting

Ganymede Shows Evidence of Past Strike-slip Faulting

A recently published study led by researchers at the University of Hawai'i at Manoa School of Ocean and Earth Science and Technology reveals Ganymede, an icy moon of Jupiter, appears to have undergone complex periods of geologic activity, specifically strike-slip tectonism, as is seen in Earth's San Andreas fault.

Habitable Zones & Global Climate

Rotational 'Goldilocks' Zones for Fractional Habitability and Silicate Weathering

Rotational 'Goldilocks' Zones for Fractional Habitability and Silicate Weathering

Planetary rotation rate has a significant effect on atmospheric circulation, where the strength of the Coriolis effect in part determines the efficiency of latitudinal heat transport, altering cloud distributions, surface temperatures, and precipitation patterns.

Biosignatures & Paleobiology

Mass Balance Analysis of Oxidative Biological Weathering and Biosignatures Formation

Mass Balance Analysis of Oxidative Biological Weathering and Biosignatures Formation

Ecosystem-bedrock interactions power the biogeochemical cycles of Earth shallow crust, supporting life, stimulating substrate transformation, and spurring evolutionary innovation.

Habitable Zones & Global Climate

Methane in Analogs of Young Directly Imaged Exoplanets

Methane in Analogs of Young Directly Imaged Exoplanets

We present detections of methane in R of 1300, L band spectra of VHS 1256 b and PSO 318.5, two low gravity, red, late L dwarfs that share the same colors as the HR 8799 planets.

Astrochemistry

An Infrared Measurement of Chemical Desorption From Interstellar Ice Analogues

An Infrared Measurement of Chemical Desorption From Interstellar Ice Analogues

In molecular clouds at temperatures as low as 10 K, all species except hydrogen and helium should be locked in the heterogeneous ice on dust grain surfaces. Nevertheless, astronomical observations have detected over 150 different species in the gas phase in these clouds.

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