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 2018Constraints 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

Direct Imaging of the HD 35841 Debris Disk: A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST/STIS

Esposito, T. M., Duchêne, G., Kalas, P., Rice, M., Choquet, É., Ren, B., … Wolff, S. (2018). Direct Imaging of the HD 35841 Debris Disk: A Polarized Dust Ring from Gemini Planet Imager and an Outer Halo from HST/STIS. The Astronomical Journal, 156(2), 47. doi:10.3847/1538-3881/aacbc9

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

On Forecasting Dust Storms on Mars

Montabone, L., Forget, F. (2018) On Forecasting Dust Storms on Mars. Proceedings of the 48th International Conference on Environmental Systems, 2018:281. http://hdl.handle.net/2346/74226

Planetary Protection Knowledge Gaps for Future Mars Human Missions: Stepwise Progress in Identiying and Integrating Science and Technology Needs

Spry, J.A., Race, M.S., Kminek, G., Siegel, B., Conley, C. (2018) Planetary Protection Knowledge Gaps for Future Mars Human Missions: Stepwise Progress in Identifying and Integrating Science and Technology Needs, Proceedings of the 48th International Conference on Environmental Systems, 2018:315. http://hdl.handle.net/2346/74252

June 2018Cryogenian iron formations in the glaciogenic Kingston Peak Formation, California

Lechte, M. A., Wallace, M. W., Hood, A. v. S., & Planavsky, N. (2018). Cryogenian iron formations in the glaciogenic Kingston Peak Formation, California. Precambrian Research, 310, 443–462. doi:10.1016/j.precamres.2018.04.003

The Tonian Beck Spring Dolomite: Marine dolomitization in a shallow, anoxic sea

Shuster, A. M., Wallace, M. W., Van Smeerdijk Hood, A., & Jiang, G. (2018). The Tonian Beck Spring Dolomite: Marine dolomitization in a shallow, anoxic sea. Sedimentary Geology, 368, 83–104. doi:10.1016/j.sedgeo.2018.03.003

Exoplanet Biosignatures: Observational Prospects

Fujii, Y., Angerhausen, D., Deitrick, R., Domagal-Goldman, S., Grenfell, J. L., Hori, Y., … Stevenson, K. B. (2018). Exoplanet Biosignatures: Observational Prospects. Astrobiology, 18(6), 739–778. doi:10.1089/ast.2017.1733

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