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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October 2022Evaluating the Plausible Range of N2O Biosignatures on Exo-Earths: An Integrated Biogeochemical, Photochemical, and Spectral Modeling Approach

Schwieterman, E. W., Olson, S. L., Pidhorodetska, D., Reinhard, C. T., Ganti, A., Fauchez, T. J., … Lyons, T. W. (2022). Evaluating the Plausible Range of N<sub>2</sub>O Biosignatures on Exo-Earths: An Integrated Biogeochemical, Photochemical, and Spectral Modeling Approach. The Astrophysical Journal, 937(2), 109. doi:10.3847/1538-4357/ac8cfb

The case for the angrite parent body as the archetypal first-generation planetesimal: Large, reduced and Mg-enriched

Tissot, F. L. H., Collinet, M., Namur, O., & Grove, T. L. (2022). The case for the angrite parent body as the archetypal first-generation planetesimal: Large, reduced and Mg-enriched. Geochimica et Cosmochimica Acta. doi:10.1016/j.gca.2022.09.031

Early and late phases of the Permian–Triassic mass extinction marked by different atmospheric CO2 regimes

Shen, J., Zhang, Y. G., Yang, H., Xie, S., & Pearson, A. (2022). Early and late phases of the Permian–Triassic mass extinction marked by different atmospheric CO2 regimes. Nature Geoscience. doi:10.1038/s41561-022-01034-w

Reduced Late Bombardment on Rocky Exoplanets around M Dwarfs

Lichtenberg, T., & Clement, M. S. (2022). Reduced Late Bombardment on Rocky Exoplanets around M Dwarfs. The Astrophysical Journal Letters, 938(1), L3. doi:10.3847/2041-8213/ac9521

Deep-branching acetogens in serpentinized subsurface fluids of Oman

Colman, D. R., Kraus, E. A., Thieringer, P. H., Rempfert, K., Templeton, A. S., Spear, J. R., & Boyd, E. S. (2022). Deep-branching acetogens in serpentinized subsurface fluids of Oman. Proceedings of the National Academy of Sciences, 119(42), None. doi:10.1073/pnas.2206845119

Partially‐Saturated Brines Within Basal Ice or Sediments Can Explain the Bright Basal Reflections in the South Polar Layered Deposits

Stillman, D. E., Pettinelli, E., Lauro, S. E., Mattei, E., Caprarelli, G., Cosciotti, B., … Orosei, R. (2022). Partially‐Saturated Brines Within Basal Ice or Sediments Can Explain the Bright Basal Reflections in the South Polar Layered Deposits. Journal of Geophysical Research: Planets, 127(10), None. doi:10.1029/2022je007398

Microbial biosignature preservation in carbonated serpentine from the Samail Ophiolite, Oman

Lima-Zaloumis, J., Neubeck, A., Ivarsson, M., Bose, M., Greenberger, R., Templeton, A. S., … Edvinsson, T. (2022). Microbial biosignature preservation in carbonated serpentine from the Samail Ophiolite, Oman. Communications Earth & Environment, 3(1), None. doi:10.1038/s43247-022-00551-1

Chemolithoautotroph distributions across the subsurface of a convergent margin

Rogers, T. J., Buongiorno, J., Jessen, G. L., Schrenk, M. O., Fordyce, J. A., De Moor, J. M., … Lloyd, K. G. (2022). Chemolithoautotroph distributions across the subsurface of a convergent margin. The ISME Journal. doi:10.1038/s41396-022-01331-7

September 2022Hot exozodis: cometary supply without trapping is unlikely to be the mechanism

Pearce, T. D., Kirchschlager, F., Rouillé, G., Ertel, S., Bensberg, A., Krivov, A. V., … Augereau, J-C. (2022). Hot exozodis: cometary supply without trapping is unlikely to be the mechanism. Monthly Notices of the Royal Astronomical Society, 517(1), 1436–1451. doi:10.1093/mnras/stac2773

Foundational women in planetary geomorphology: Some contributions in fluvial, aeolian, and (cryo)volcanic subdisciplines

Burr, D. M., Diniega, S., Quick, L. C., Gardner‐Vandy, K., & Rivera‐Hernandez, F. (2022). Foundational women in planetary geomorphology: Some contributions in fluvial, aeolian, and (cryo)volcanic subdisciplines. Earth Surface Processes and Landforms. doi:10.1002/esp.5465

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