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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January 2020Uranium Isotope Fractionation (238U/235U) during U(VI) Uptake by Freshwater Plankton

Chen, X., Zheng, W., Anbar, A.D. (2020). Uranium Isotope Fractionation (238U/235U) during U(VI) Uptake by Freshwater Plankton. Environmental Science and Technology. doi.org/10.1021/acs.est.9b06421

An RNA polymerase ribozyme that synthesizes its own ancestor

Tjhung, K. F., Shokhirev, M. N., Horning, D. P., & Joyce, G. F. (2020). An RNA polymerase ribozyme that synthesizes its own ancestor. Proceedings of the National Academy of Sciences, 117(6), 2906–2913. doi:10.1073/pnas.1914282117

First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager

Hom, J., Patience, J., Esposito, T. M., Duchêne, G., Worthen, K., Kalas, P., … Zuckerman, B. (2020). First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager. The Astronomical Journal, 159(1), 31. doi:10.3847/1538-3881/ab5af2

Magnesium isotopes of the bulk solar wind from Genesis diamond‐like carbon films

Jurewicz, A. J. G., Rieck, K. D., Hervig, R., Burnett, D. S., Wadhwa, M., Olinger, C. T., … Williams, P. (2020). Magnesium isotopes of the bulk solar wind from Genesis diamond‐like carbon films. Meteoritics & Planetary Science. doi:10.1111/maps.13439

Hydrothermal influence on barite precipitates in the basal Ediacaran Sete Lagoas cap dolostone, São Francisco Craton, central Brazil

Okubo, J., Klyukin, Y. I., Warren, L. V., Matthew Sublett Jr., D., Bodnar, R. J., Gill, B. C., & Xiao, S. (2020). Hydrothermal influence on barite precipitates in the basal Ediacaran Sete Lagoas cap dolostone, São Francisco Craton, central Brazil. Precambrian Research, None, 105628. doi:10.1016/j.precamres.2020.105628

Atmospheric CO2 levels from 2.7 billion years ago inferred from micrometeorite oxidation

Lehmer, O. R., Catling, D. C., Buick, R., Brownlee, D. E., & Newport, S. (2020). Atmospheric CO2 levels from 2.7 billion years ago inferred from micrometeorite oxidation. Science Advances, 6(4), eaay4644. doi:10.1126/sciadv.aay4644

Draft Genome Sequence of Acidianus ambivalens DSM 3772, an Aerobic Thermoacidophilic Sulfur Disproportionator

Bertran, E., Ward, L. M., & Johnston, D. T. (2020). Draft Genome Sequence of Acidianus ambivalens DSM 3772, an Aerobic Thermoacidophilic Sulfur Disproportionator. Microbiology Resource Announcements, 9(3), None. doi:10.1128/mra.01415-19

Draft Genome Sequence of Desulfofundulus thermobenzoicus subsp. thermosyntrophicus DSM 14055, a Moderately Thermophilic Sulfate Reducer

Bertran, E., Ward, L. M., & Johnston, D. T. (2020). Draft Genome Sequence of Desulfofundulus thermobenzoicus subsp. thermosyntrophicus DSM 14055, a Moderately Thermophilic Sulfate Reducer. Microbiology Resource Announcements, 9(3), None. doi:10.1128/mra.01416-19

Polyesters as a Model System for Building Primitive Biologies from Non-Biological Prebiotic Chemistry

Chandru, Mamajanov, Cleaves, & Jia (2020). Polyesters as a Model System for Building Primitive Biologies from Non-Biological Prebiotic Chemistry. Life, 10(1), 6. doi:10.3390/life10010006

Lifetimes of interstellar dust from cosmic ray exposure ages of presolar silicon carbide

Heck, P. R., Greer, J., Kööp, L., Trappitsch, R., Gyngard, F., Busemann, H., … Wieler, R. (2020). Lifetimes of interstellar dust from cosmic ray exposure ages of presolar silicon carbide. Proceedings of the National Academy of Sciences, None, 201904573. doi:10.1073/pnas.1904573117

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