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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February 2020Promiscuous Ribozymes and Their Proposed Role in Prebiotic Evolution

Janzen, E., Blanco, C., Peng, H., Kenchel, J., & Chen, I. A. (2020). Promiscuous Ribozymes and Their Proposed Role in Prebiotic Evolution. Chemical Reviews, 120(11), 4879–4897. doi:10.1021/acs.chemrev.9b00620

Carbon Oxidation State in Microbial Polar Lipids Suggests Adaptation to Hot Spring Temperature and Redox Gradients

Boyer, G. M., Schubotz, F., Summons, R. E., Woods, J., & Shock, E. L. (2020). Carbon Oxidation State in Microbial Polar Lipids Suggests Adaptation to Hot Spring Temperature and Redox Gradients. Frontiers in Microbiology, 11, None. doi:10.3389/fmicb.2020.00229

Lipid Biomarkers in Ephemeral Acid Salt Lake Mudflat/Sandflat Sediments: Implications for Mars

Johnson, S. S., Millan, M., Graham, H., Benison, K. C., Williams, A. J., McAdam, A., … Achilles, C. (2020). Lipid Biomarkers in Ephemeral Acid Salt Lake Mudflat/Sandflat Sediments: Implications for Mars. Astrobiology, 20(2), 167–178. doi:10.1089/ast.2017.1812

Primordial organic matter in the xenolithic clast in the Zag H chondrite: Possible relation to D/P asteroids

Kebukawa, Y., Zolensky, M. E., Ito, M., Ogawa, N. O., Takano, Y., Ohkouchi, N., … Kobayashi, K. (2020). Primordial organic matter in the xenolithic clast in the Zag H chondrite: Possible relation to D/P asteroids. Geochimica et Cosmochimica Acta, 271, 61–77. doi:10.1016/j.gca.2019.12.012

Prebiotic Peptides: Molecular Hubs in the Origin of Life

Frenkel-Pinter, M., Samanta, M., Ashkenasy, G., & Leman, L. J. (2020). Prebiotic Peptides: Molecular Hubs in the Origin of Life. Chemical Reviews. doi:10.1021/acs.chemrev.9b00664

Vesicle paleobarometry in the Pongola Supergroup: A cautionary note and guidelines for future studies

Goosmann, E. A., Buick, R., Catling, D. C., Luskin, C., & Nhleko, N. (2020). Vesicle paleobarometry in the Pongola Supergroup: A cautionary note and guidelines for future studies. South African Journal of Geology. doi:10.25131/sajg.123.0005

A one-billion-year-old multicellular chlorophyte

Tang, Q., Pang, K., Yuan, X., & Xiao, S. (2020). A one-billion-year-old multicellular chlorophyte. Nature Ecology & Evolution. doi:10.1038/s41559-020-1122-9

Extremely Long Convergence Times in a 3D GCM Simulation of the Sub-Neptune Gliese 1214b

Wang, H., & Wordsworth, R. (2020). Extremely Long Convergence Times in a 3D GCM Simulation of the Sub-Neptune Gliese 1214b. The Astrophysical Journal, 891(1), 7. doi:10.3847/1538-4357/ab6dcc

Duplication of leucyl-tRNA synthetase in an archaeal extremophile may play a role in adaptation to variable environmental conditions

Weitzel, C. S., Li, L., Zhang, C., Eilts, K. K., Bretz, N. M., Gatten, A. L., … Martinis, S. A. (2020). Duplication of leucyl-tRNA synthetase in an archaeal extremophile may play a role in adaptation to variable environmental conditions. Journal of Biological Chemistry, None, jbc.RA118.006481. doi:10.1074/jbc.ra118.006481

Olivine‐Carbonate Mineralogy of the Jezero Crater Region

Brown, A. J., Viviano, C. E., & Goudge, T. A. (2020). Olivine‐Carbonate Mineralogy of the Jezero Crater Region. Journal of Geophysical Research: Planets, 125(3), None. doi:10.1029/2019je006011

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