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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March 2020Draft Genome Sequence of Desulfovibrio sulfodismutans ThAc01, a Heterotrophic Sulfur-Disproportionating Member of the Desulfobacterota

Ward, L. M., Bertran, E., & Johnston, D. T. (2020). Draft Genome Sequence of Desulfovibrio sulfodismutans ThAc01, a Heterotrophic Sulfur-Disproportionating Member of the Desulfobacterota. Microbiology Resource Announcements, 9(13), None. doi:10.1128/mra.00202-20

On the XUV Luminosity Evolution of TRAPPIST-1

Fleming, D. P., Barnes, R., Luger, R., & VanderPlas, J. T. (2020). On the XUV Luminosity Evolution of TRAPPIST-1. The Astrophysical Journal, 891(2), 155. doi:10.3847/1538-4357/ab77ad

Dim Prospects for Transmission Spectra of Ocean Earths around M Stars

Suissa, G., Mandell, A. M., Wolf, E. T., Villanueva, G. L., Fauchez, T., & Kopparapu, R. k. (2020). Dim Prospects for Transmission Spectra of Ocean Earths around M Stars. The Astrophysical Journal, 891(1), 58. doi:10.3847/1538-4357/ab72f9

Discovery of the oldest bilaterian from the Ediacaran of South Australia

Evans, S. D., Hughes, I. V., Gehling, J. G., & Droser, M. L. (2020). Discovery of the oldest bilaterian from the Ediacaran of South Australia. Proceedings of the National Academy of Sciences, None, 202001045. doi:10.1073/pnas.2001045117

Cycling phosphorus on the Archean Earth: Part I. Continental weathering and riverine transport of phosphorus

Hao, J., Knoll, A. H., Huang, F., Hazen, R. M., & Daniel, I. (2020). Cycling phosphorus on the Archean Earth: Part I. Continental weathering and riverine transport of phosphorus. Geochimica et Cosmochimica Acta, 273, 70–84. doi:10.1016/j.gca.2020.01.027

Small protein folds at the root of an ancient metabolic network

Raanan, H., Poudel, S., Pike, D. H., Nanda, V., & Falkowski, P. G. (2020). Small protein folds at the root of an ancient metabolic network. Proceedings of the National Academy of Sciences, 117(13), 7193–7199. doi:10.1073/pnas.1914982117

Ferromanganese crusts as recorders of marine dissolved oxygen

Sutherland, K. M., Wostbrock, J. A. G., Hansel, C. M., Sharp, Z. D., Hein, J. R., & Wankel, S. D. (2020). Ferromanganese crusts as recorders of marine dissolved oxygen. Earth and Planetary Science Letters, 533, 116057. doi:10.1016/j.epsl.2019.116057

Short-Term Stable Isotope Probing of Proteins Reveals Taxa Incorporating Inorganic Carbon in a Hot Spring Microbial Mat

Steinke, L., Slysz, G. W., Lipton, M. S., Klatt, C., Moran, J. J., Romine, M. F., … Ward, D. M. (2020). Short-Term Stable Isotope Probing of Proteins Reveals Taxa Incorporating Inorganic Carbon in a Hot Spring Microbial Mat. Applied and Environmental Microbiology, 86(7), None. doi:10.1128/aem.01829-19

Formation of primitive achondrites by partial melting of alkali-undepleted planetesimals in the inner solar system

Collinet, M., & Grove, T. L. (2020). Formation of primitive achondrites by partial melting of alkali-undepleted planetesimals in the inner solar system. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2020.03.004

Widespread production of silica- and alkali-rich melts at the onset of planetesimal melting

Collinet, M., & Grove, T. L. (2020). Widespread production of silica- and alkali-rich melts at the onset of planetesimal melting. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2020.03.005

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