NASA Astrobiology

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A volcanically active planet is shown in closeup at the left side of the image with glowing eruptions and lines of lava on the surface. To the right and in the distance is a faint blue glowing ball representing the more massive planet in the system.

Sixteen frames from Voyager 1's flyby of Jupiter in 1979 were merged to create this image. Jupiter's Great Red Spot is visible in the center. Jupiter's moon Europa can be seen in the foreground at the bottom left of the image.

The frame is a horizontal rainbow of color on a grid. Shadows of molecules can be seen through the light as well as the jagged peaks and troughs of spectral lines.

Fizzy Super Earths and Lava Worlds“Fizzy Super-Earths: Impacts of Magma Composition on the Bulk Density and Structure of Lava Worlds.” in The Astrophysical Journal.01/03

Identifying Hydrothermal Activity on Icy Ocean Worlds“Ethene-ethanol ratios as potential indicators of hydrothermal activity at Enceladus, Europa, and other icy ocean worlds.” In Icarus.02/03

NASA Raman Spectroscopic Database"The NASA Raman spectroscopic database: Ramdb version 1.00.” In Icarus.03/03

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April 2021Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin

Fullerton, K. M., Schrenk, M. O., Yücel, M., Manini, E., Basili, M., Rogers, T. J., … Lloyd, K. G. (2021). Effect of tectonic processes on biosphere–geosphere feedbacks across a convergent margin. Nature Geoscience. doi:10.1038/s41561-021-00725-0

Discovery of primitive CO2-bearing fluid in an aqueously altered carbonaceous chondrite

Tsuchiyama, A., Miyake, A., Okuzumi, S., Kitayama, A., Kawano, J., Uesugi, K., … Zolensky, M. (2021). Discovery of primitive CO2-bearing fluid in an aqueously altered carbonaceous chondrite. Science Advances, 7(17), eabg9707. doi:10.1126/sciadv.abg9707

Kinetic Analysis Suggests Evolution of Ribosome Specificity in Modern Elongation Factor-Tus from ‘Generalist’ Ancestors

De Tarafder, A., Parajuli, N. P., Majumdar, S., Kaçar, B., & Sanyal, S. (2021). Kinetic Analysis Suggests Evolution of Ribosome Specificity in Modern Elongation Factor-Tus from ‘Generalist’ Ancestors. Molecular Biology and Evolution. doi:10.1093/molbev/msab114

Ferric iron triggers greenalite formation in simulated Archean seawater

Hinz, I. L., Nims, C., Theuer, S., Templeton, A. S., & Johnson, J. E. (2021). Ferric iron triggers greenalite formation in simulated Archean seawater. Geology. doi:10.1130/g48495.1

Oxygen False Positives on Habitable Zone Planets Around Sun‐Like Stars

Krissansen‐Totton, J., Fortney, J. J., Nimmo, F., & Wogan, N. (2021). Oxygen False Positives on Habitable Zone Planets Around Sun‐Like Stars. AGU Advances, 2(2), None. doi:10.1029/2020av000294

Preliminary exploration of molybdenum isotope fractionation during coprecipitation of molybdate with abiotic and microbial calcite

Chen, X., Romaniello, S. J., & Anbar, A. D. (2021). Preliminary exploration of molybdenum isotope fractionation during coprecipitation of molybdate with abiotic and microbial calcite. Chemical Geology, 566, 120102. doi:10.1016/j.chemgeo.2021.120102

Anaerobic 3-Methylhopanoid Production By An Acidophilic Phototrophic Purple Bacterium

Mayer, M., Parenteau, M. N., Kempher, M. L., Madigan, M. T., Jahnke, L. L., & Welander, P. V. (2021). Anaerobic 3-Methylhopanoid Production By An Acidophilic Phototrophic Purple Bacterium. None. doi:10.21203/rs.3.rs-390249/v1

Analytical Chemistry in Astrobiology

Seaton, K. M., Cable, M. L., & Stockton, A. M. (2021). Analytical Chemistry in Astrobiology. Analytical Chemistry, 93(15), 5981–5997. doi:10.1021/acs.analchem.0c04271

Thermal metamorphism of CM chondrites: A dehydroxylation‐based peak‐temperature thermometer and implications for sample return from asteroids Ryugu and Bennu

Velbel, M. A., & Zolensky, M. E. (2021). Thermal metamorphism of CM chondrites: A dehydroxylation‐based peak‐temperature thermometer and implications for sample return from asteroids Ryugu and Bennu. Meteoritics & Planetary Science. doi:10.1111/maps.13636

Effects of Amino Acids on Phosphate Adsorption Onto Iron (Oxy)hydroxide Minerals under Early Earth Conditions

Flores, E., Martinez, E., Rodriguez, L. E., Weber, J. M., Khodayari, A., VanderVelde, D. G., & Barge, L. M. (2021). Effects of Amino Acids on Phosphate Adsorption Onto Iron (Oxy)hydroxide Minerals under Early Earth Conditions. ACS Earth and Space Chemistry, 5(5), 1048–1057. doi:10.1021/acsearthspacechem.1c00006

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