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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December 2020High burial efficiency is required to explain mass balance in Earth's early carbon cycle

Kipp, M., Krissansen‐Totton, J., & Catling, D. C. (2020). High burial efficiency is required to explain mass balance in Earth's early carbon cycle. Global Biogeochemical Cycles. doi:10.1029/2020gb006707

Kinetic Effects of β,γ-Modified Deoxynucleoside 5′-Triphosphate Analogues on RNA-Catalyzed Polymerization of DNA

Setterholm, N. A., Haratipour, P., Kashemirov, B. A., McKenna, C. E., & Joyce, G. F. (2020). Kinetic Effects of β,γ-Modified Deoxynucleoside 5′-Triphosphate Analogues on RNA-Catalyzed Polymerization of DNA. Biochemistry, 60(1), 1–5. doi:10.1021/acs.biochem.0c00779

Gemini Planet Imager Spectroscopy of the Dusty Substellar Companion HD 206893 B

Ward-Duong, K., Patience, J., Follette, K., Rosa, R. J. D., Rameau, J., Marley, M., … Wolff, S. (2020). Gemini Planet Imager Spectroscopy of the Dusty Substellar Companion HD 206893 B. The Astronomical Journal, 161(1), 5. doi:10.3847/1538-3881/abc263

Historical natural kinds and mineralogy: Systematizing contingency in the context of necessity

Cleland, C. E., Hazen, R. M., & Morrison, S. M. (2020). Historical natural kinds and mineralogy: Systematizing contingency in the context of necessity. Proceedings of the National Academy of Sciences, 118(1), None. doi:10.1073/pnas.2015370118

Preservation of organic carbon in dolomitized Cambrian stromatolites and implications for microbial biosignatures in diagenetically replaced carbonate rock

Murphy, A. E., Wieman, S. T., Gross, J., Stern, J. C., Steele, A., & Glamoclija, M. (2020). Preservation of organic carbon in dolomitized Cambrian stromatolites and implications for microbial biosignatures in diagenetically replaced carbonate rock. Sedimentary Geology, 410, 105777. doi:10.1016/j.sedgeo.2020.105777

Oxidation processes diversify the metabolic menu on Enceladus

Ray, C., Glein, C. R., Hunter Waite, J., Teolis, B., Hoehler, T., Huber, J., … Postberg, F. (2020). Oxidation processes diversify the metabolic menu on Enceladus. Icarus, None, 114248. doi:10.1016/j.icarus.2020.114248

First Detection of Orbital Motion for HD 106906 b: A Wide-separation Exoplanet on a Planet Nine–like Orbit

Nguyen, M. M., De Rosa, R. J., & Kalas, P. (2020). First Detection of Orbital Motion for HD 106906 b: A Wide-separation Exoplanet on a Planet Nine–like Orbit. The Astronomical Journal, 161(1), 22. doi:10.3847/1538-3881/abc012

Simple kinetics, assay, and trends for soil microbial catalases

Chabot, M., Morales, E., Cummings, J., Rios, N., Giatpaiboon, S., & Mogul, R. (2020). Simple kinetics, assay, and trends for soil microbial catalases. Analytical Biochemistry, 610, 113901. doi:10.1016/j.ab.2020.113901

GPI 2.0: upgrading the Gemini Planet Imager

Chilcote, J. K., Konopacky, Q. M., De Rosa, R. J., Hamper, R., Macintosh, B. A., Marois, C., … Thomas, C. (2020). GPI 2.0: upgrading the Gemini Planet Imager. Ground-based and Airborne Instrumentation for Astronomy VIII. doi:10.1117/12.2562578

Gemini Planet Imager observational calibrations XV: instrument calibrations after six years on sky

De Rosa, R. J., Esposito, T. M., Gibbs, A., Bailey, V., Fitzgerald, M., Chilcote, J. K., … Wang, J. J. (2020). Gemini Planet Imager observational calibrations XV: instrument calibrations after six years on sky. Ground-based and Airborne Instrumentation for Astronomy VIII. doi:10.1117/12.2561071

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