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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July 2018The Impact of Stellar Distances on Habitable Zone Planets

Kane, S. R. (2018). The Impact of Stellar Distances on Habitable Zone Planets. The Astrophysical Journal, 861(2), L21. doi:10.3847/2041-8213/aad094

New Young Stars and Brown Dwarfs in the Upper Scorpius Association

Luhman, K. L., Herrmann, K. A., Mamajek, E. E., Esplin, T. L., & Pecaut, M. J. (2018). New Young Stars and Brown Dwarfs in the Upper Scorpius Association. The Astronomical Journal, 156(2), 76. doi:10.3847/1538-3881/aacc6d

First evidence for silica condensation within the solar protoplanetary disk

Komatsu, M., Fagan, T. J., Krot, A. N., Nagashima, K., Petaev, M. I., Kimura, M., & Yamaguchi, A. (2018). First evidence for silica condensation within the solar protoplanetary disk. Proceedings of the National Academy of Sciences, None, 201722265. doi:10.1073/pnas.1722265115

The soluble organic compounds of the Mukundpura meteorite: A new CM chondrite fall

Pizzarello, S., & Yarnes, C. T. (2018). The soluble organic compounds of the Mukundpura meteorite: A new CM chondrite fall. Planetary and Space Science. doi:10.1016/j.pss.2018.07.002

Forward contamination of ocean worlds: A stakeholder conversation

Sherwood, B., Ponce, A., & Waltemathe, M. (2018). Forward contamination of ocean worlds: A stakeholder conversation. Space Policy. doi:10.1016/j.spacepol.2018.06.005

Transient surface ocean oxygenation recorded in the ∼2.66-Ga Jeerinah Formation, Australia

Koehler, M. C., Buick, R., Kipp, M. A., Stüeken, E. E., & Zaloumis, J. (2018). Transient surface ocean oxygenation recorded in the ∼2.66-Ga Jeerinah Formation, Australia. Proceedings of the National Academy of Sciences, 115(30), 7711–7716. doi:10.1073/pnas.1720820115

Constraints on the Metabolic Activity of Microorganisms in Atacama Surface Soils Inferred from Refractory Biomarkers: Implications for Martian Habitability and Biomarker Detection

Wilhelm, M. B., Davila, A. F., Parenteau, M. N., Jahnke, L. L., Abate, M., Cooper, G., … Warren-Rhodes, K. (2018). Constraints on the Metabolic Activity of Microorganisms in Atacama Surface Soils Inferred from Refractory Biomarkers: Implications for Martian Habitability and Biomarker Detection. Astrobiology, 18(7), 955–966. doi:10.1089/ast.2017.1705

Evolution of H 2 O production in comet C/2012 S1 (ISON) as inferred from forbidden oxygen and OH emission

McKay, A. J., Cochran, A. L., DiSanti, M. A., Dello Russo, N., Weaver, H., Vervack, R. J., … Kawakita, H. (2018). Evolution of H 2 O production in comet C/2012 S1 (ISON) as inferred from forbidden oxygen and OH emission. Icarus, 309, 1–12. doi:10.1016/j.icarus.2018.02.024

Bacterial diversification through geological time

Louca, S., Shih, P. M., Pennell, M. W., Fischer, W. W., Parfrey, L. W., & Doebeli, M. (2018). Bacterial diversification through geological time. Nature Ecology & Evolution. doi:10.1038/s41559-018-0625-0

Metabolic Processes Preserved as Biosignatures in Iron-Oxidizing Microorganisms: Implications for Biosignature Detection on Mars

Floyd, M. A. M., Williams, A. J., Grubisic, A., & Emerson, D. (2018). Metabolic Processes Preserved as Biosignatures in Iron-Oxidizing Microorganisms: Implications for Biosignature Detection on Mars. Astrobiology. doi:10.1089/ast.2017.1745

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