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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September 2022Physiological and metabolic responses of chemolithoautotrophic NO3−$$ {\mathrm{NO}}_3^{-} $$ reducers to high hydrostatic pressure

Pérez‐Rodríguez, I., Sievert, S. M., Fogel, M. L., & Foustoukos, D. I. (2022). Physiological and metabolic responses of chemolithoautotrophic NO3−$$ {\mathrm{NO}}_3^{-} $$ reducers to high hydrostatic pressure. Geobiology. doi:10.1111/gbi.12522

Orbitally paced global oceanic deoxygenation decoupled from volcanic CO2 emission during the middle Cretaceous Oceanic Anoxic Event 1b (Aptian-Albian transition)

Wang, Y., Bodin, S., Blusztajn, J. S., Ullmann, C., & Nielsen, S. G. (2022). Orbitally paced global oceanic deoxygenation decoupled from volcanic CO2 emission during the middle Cretaceous Oceanic Anoxic Event 1b (Aptian-Albian transition). Geology. doi:10.1130/g50553.1

Expansion of the global RNA virome reveals diverse clades of bacteriophages

Neri, U., Wolf, Y. I., Roux, S., Camargo, A. P., Lee, B., Kazlauskas, D., … Wang, Z. (2022). Expansion of the global RNA virome reveals diverse clades of bacteriophages. Cell. doi:10.1016/j.cell.2022.08.023

Microbial protocols for spacecraft: 2. Biocidal effects of Delrin and nylon in sealed compartments may enhance bioburden reductions in planetary spacecraft

Schuerger, A. C., Schwendner, P., & Tucker, R. T. (2022). Microbial protocols for spacecraft: 2. Biocidal effects of Delrin and nylon in sealed compartments may enhance bioburden reductions in planetary spacecraft. International Journal of Astrobiology, None, 1–11. doi:10.1017/s1473550422000349

Calcium isotope constraints on OIB and MORB petrogenesis: The importance of melt mixing

Eriksen, Z. T., & Jacobsen, S. B. (2022). Calcium isotope constraints on OIB and MORB petrogenesis: The importance of melt mixing. Earth and Planetary Science Letters, 593, 117665. doi:10.1016/j.epsl.2022.117665

Mercury isotope evidence for a non-volcanic origin of Hg spikes at the Ordovician-Silurian boundary, South China

Shen, J., Algeo, T. J., & Feng, Q. (2022). Mercury isotope evidence for a non-volcanic origin of Hg spikes at the Ordovician-Silurian boundary, South China. Earth and Planetary Science Letters, 594, 117705. doi:10.1016/j.epsl.2022.117705

Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples

Nakamura, T., Matsumoto, M., Amano, K., Enokido, Y., Zolensky, M. E., Mikouchi, T., … Tsuda, Y. (2022). Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples. Science. doi:10.1126/science.abn8671

An RNA aptamer that shifts the reduction potential of metabolic cofactors

Samuelian, J. S., Gremminger, T. J., Song, Z., Poudyal, R. R., Li, J., Zhou, Y., … Baum, D. A. (2022). An RNA aptamer that shifts the reduction potential of metabolic cofactors. Nature Chemical Biology. doi:10.1038/s41589-022-01121-4

August 2022Nucleobases in Meteorites to Nucleobases in RNA and DNA?

Krishnamurthy, R., Goldman, A. D., Liberles, D. A., Rogers, K. L., & Tor, Y. (2022). Nucleobases in Meteorites to Nucleobases in RNA and DNA? Journal of Molecular Evolution, 90(5), 328–331. doi:10.1007/s00239-022-10069-x

Composition, Roughness, and Topography from Radar Backscatter at Selk Crater, the Dragonfly Landing Site

Bonnefoy, L. E., Lucas, A., Hayes, A. G., Rodriguez, S., Poggiali, V., Lalich, D. E., … Gall, A. L. (2022). Composition, Roughness, and Topography from Radar Backscatter at Selk Crater, the Dragonfly Landing Site. The Planetary Science Journal, 3(8), 201. doi:10.3847/psj/ac8428

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