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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May 2021Preservation and Distributions of Covalently Bound Polyaromatic Hydrocarbons in Ancient Biogenic Kerogens and Insoluble Organic Macromolecules

Pehr, K., Bisquera, R., Bishop, A. N., Ossa Ossa, F., Meredith, W., Bekker, A., & Love, G. D. (2021). Preservation and Distributions of Covalently Bound Polyaromatic Hydrocarbons in Ancient Biogenic Kerogens and Insoluble Organic Macromolecules. Astrobiology. doi:10.1089/ast.2020.2338

TEM Analyses of Unusual Presolar Silicon Carbide: Insights into the Range of Circumstellar Dust Condensation Conditions

Singerling, S. A., Liu, N., Nittler, L. R., O’D. Alexander, C. M., & Stroud, R. M. (2021). TEM Analyses of Unusual Presolar Silicon Carbide: Insights into the Range of Circumstellar Dust Condensation Conditions. The Astrophysical Journal, 913(2), 90. doi:10.3847/1538-4357/abece2

Search for meteoritic GEMS II: Comparison of inclusions in amorphous silicates from the Paris chondrite and from anhydrous chondritic interplanetary dust particles

Villalon, K. L., Ohtaki, K. K., Bradley, J. P., Ishii, H. A., Davis, A. M., & Stephan, T. (2021). Search for meteoritic GEMS II: Comparison of inclusions in amorphous silicates from the Paris chondrite and from anhydrous chondritic interplanetary dust particles. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2021.05.041

Rates of protoplanetary accretion and differentiation set nitrogen budget of rocky planets

Grewal, D. S., Dasgupta, R., Hough, T., & Farnell, A. (2021). Rates of protoplanetary accretion and differentiation set nitrogen budget of rocky planets. Nature Geoscience, 14(6), 369–376. doi:10.1038/s41561-021-00733-0

Windblown Hadean zircons derived by erosion of impact-generated 3.3 Ga uplifts, Barberton Greenstone Belt, South Africa

Lowe, D. R., Drabon, N., Byerly, G. R., & Byerly, B. L. (2021). Windblown Hadean zircons derived by erosion of impact-generated 3.3 Ga uplifts, Barberton Greenstone Belt, South Africa. Precambrian Research, 356, 106111. doi:10.1016/j.precamres.2021.106111

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

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