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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June 2019Potential aeolian deposition of intra-crater layering: A case study of Henry crater, Mars

Day, M. D., & Catling, D. C. (2019). Potential aeolian deposition of intra-crater layering: A case study of Henry crater, Mars. GSA Bulletin. doi:10.1130/b35230.1

Paleo-Rock-Hosted Life on Earth and the Search on Mars: A Review and Strategy for Exploration

Onstott, T. C., Ehlmann, B. L., Sapers, H., Coleman, M., Ivarsson, M., Marlow, J. J., … Niles, P. (2019). Paleo-Rock-Hosted Life on Earth and the Search on Mars: A Review and Strategy for Exploration. Astrobiology. doi:10.1089/ast.2018.1960

A Limited Habitable Zone for Complex Life

Schwieterman, E. W., Reinhard, C. T., Olson, S. L., Harman, C. E., & Lyons, T. W. (2019). A Limited Habitable Zone for Complex Life. The Astrophysical Journal, 878(1), 19. doi:10.3847/1538-4357/ab1d52

Ultraviolet light measurements (280–400 nm) acquired from stratospheric balloon flight to assess influence on bioaerosols

Caro, T. A., Wendeln, M., Freeland, M., Bryan, N., Waters, S. M., McIntyre, A., … Smith, D. J. (2019). Ultraviolet light measurements (280–400 nm) acquired from stratospheric balloon flight to assess influence on bioaerosols. Aerobiologia. doi:10.1007/s10453-019-09597-9

Trans-Neptunian binaries as evidence for planetesimal formation by the streaming instability

Nesvorný, D., Li, R., Youdin, A. N., Simon, J. B., & Grundy, W. M. (2019). Trans-Neptunian binaries as evidence for planetesimal formation by the streaming instability. Nature Astronomy. doi:10.1038/s41550-019-0806-z

Nitrogen heterocycles form peptide nucleic acid precursors in complex prebiotic mixtures

Rodriguez, L. E., House, C. H., Smith, K. E., Roberts, M. R., & Callahan, M. P. (2019). Nitrogen heterocycles form peptide nucleic acid precursors in complex prebiotic mixtures. Scientific Reports, 9(1), None. doi:10.1038/s41598-019-45310-z

May 2019RNA-Catalyzed Polymerization of Deoxyribose, Threose, and Arabinose Nucleic Acids

Horning, D. P., Bala, S., Chaput, J. C., & Joyce, G. F. (2019). RNA-Catalyzed Polymerization of Deoxyribose, Threose, and Arabinose Nucleic Acids. ACS Synthetic Biology, 8(5), 955–961. doi:10.1021/acssynbio.9b00044

Diopatra cuprea worm burrow parchment: a cautionary tale of infaunal surface reactivity

Konhauser, K. O., Hao, W., Li, Y., Gunten, K., Bishop, B. A., Alessi, D. S., … Gingras, M. K. (2019). Diopatra cuprea worm burrow parchment: a cautionary tale of infaunal surface reactivity. Lethaia. doi:10.1111/let.12335

Wetter Stratospheres on High-obliquity Planets

Kang, W. (2019). Wetter Stratospheres on High-obliquity Planets. The Astrophysical Journal, 877(1), L6. doi:10.3847/2041-8213/ab1f79

Kinetics of calcite precipitation by ureolytic bacteria under aerobic and anaerobic conditions

Mitchell, A. C., Espinosa-Ortiz, E. J., Parks, S. L., Phillips, A. J., Cunningham, A. B., & Gerlach, R. (2019). Kinetics of calcite precipitation by ureolytic bacteria under aerobic and anaerobic conditions. Biogeosciences, 16(10), 2147–2161. doi:10.5194/bg-16-2147-2019

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