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 2022Prediction of an Earth-sized Planet Formed in the Habitable Zone of the SPECULOOS-2 System

Basant, R., Dietrich, J., & Apai, D. (2022). Prediction of an Earth-sized Planet Formed in the Habitable Zone of the SPECULOOS-2 System. Research Notes of the AAS, 6(10), 213. doi:10.3847/2515-5172/ac9ab8

Draft Genome Sequences of Fungi Isolated from Mars 2020 Spacecraft Assembly Facilities

Chander, A. M., Singh, N. K., Simpson, A. C., Seuylemezian, A., Mason, C. E., & Venkateswaran, K. (2022). Draft Genome Sequences of Fungi Isolated from Mars 2020 Spacecraft Assembly Facilities. Microbiology Resource Announcements. doi:10.1128/mra.00464-22

Results of an Eight-Year Extraction of Phosphorus Minerals within the Seymchan Meteorite

Gull, M., Feng, T., & Pasek, M. A. (2022). Results of an Eight-Year Extraction of Phosphorus Minerals within the Seymchan Meteorite. Life, 12(10), 1591. doi:10.3390/life12101591

Nd isotope variation between the Earth–Moon system and enstatite chondrites

Johnston, S., Brandon, A., McLeod, C., Rankenburg, K., Becker, H., & Copeland, P. (2022). Nd isotope variation between the Earth–Moon system and enstatite chondrites. Nature. doi:10.1038/s41586-022-05265-0

MIRECLE: Science Yield for a Mid-infrared Explorer-class Mission to Study Nontransiting Rocky Planets Orbiting the Nearest M Stars Using Planetary Infrared Excess

Mandell, A. M., Lustig-Yaeger, J., Stevenson, K. B., & Staguhn, J. (2022). MIRECLE: Science Yield for a Mid-infrared Explorer-class Mission to Study Nontransiting Rocky Planets Orbiting the Nearest M Stars Using Planetary Infrared Excess. The Astronomical Journal, 164(5), 176. doi:10.3847/1538-3881/ac83a5

Evaluating 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

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