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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August 2015 Secondary Ion Mass Spectrometry Bias on Isotope Ratios in Dolomite-Ankerite, Part I: δ 18 O Matrix Effects

Śliwiński, M. G., Kitajima, K., Kozdon, R., Spicuzza, M. J., Fournelle, J. H., Denny, A., & Valley, J. W. (2015). Geostand Geoanal Res, None(None), n/a–n/a. doi:10.1111/j.1751-908x.2015.00364.x

Secondary Ion Mass Spectrometry Bias on Isotope Ratios in Dolomite-Ankerite, Part I: δ 18 O Matrix Effects

Śliwiński, M. G., Kitajima, K., Kozdon, R., Spicuzza, M. J., Fournelle, J. H., Denny, A., & Valley, J. W. (2015). Geostand Geoanal Res, None(None), n/a–n/a. doi:10.1111/j.1751-908x.2015.00364.x

The evolution of the global selenium cycle: Secular trends in Se isotopes and abundances

Stüeken, E. E., Buick, R., Bekker, A., Catling, D., Foriel, J., Guy, B. M., … Kah, L. C. (2015). Geochimica et Cosmochimica Acta, 162(None), 109–125. doi:10.1016/j.gca.2015.04.033

Antarctic microbial mats: A modern analog for Archean lacustrine oxygen oases

Sumner, D. Y., Hawes, I., Mackey, T. J., Jungblut, A. D., & Doran, P. T. (2015). Geology, 43(10), 887–890. doi:10.1130/g36966.1

Ecoenzymatic stoichiometry at the extremes: How microbes cope in an ultra-oligotrophic desert soil

Tapia-Torres, Y., Elser, J. J., Souza, V., & GarcíA-Oliva, F. (2015). Soil Biology and Biochemistry, 87(None), 34–42. doi:10.1016/j.soilbio.2015.04.007

Preserved Filamentous Microbial Biosignatures in the Brick Flat Gossan, Iron Mountain, California

Williams, A. J., Sumner, D. Y., Alpers, C. N., Karunatillake, S., & Hofmann, B. A. (2015). Astrobiology, 15(8), 637–668. doi:10.1089/ast.2014.1235

A framework for stochastic simulations and visualization of biological electron-transfer dynamics

Nakano, C. M., Byun, H. S., Ma, H., Wei, T., & El-Naggar, M. Y. (2015). Computer Physics Communications, 193(None), 1–9. doi:10.1016/j.cpc.2015.03.009

July 2015Exploring deep microbial life in coal-bearing sediment down to 2.5 km below the ocean floor

Inagaki, F., Hinrichs, K-U., Kubo, Y., Bowles, M. W., Heuer, V. B., Hong, W-L., … Yamada, Y. (2015). Exploring deep microbial life in coal-bearing sediment down to 2.5 km below the ocean floor. Science, 349(6246), 420–424. doi:10.1126/science.aaa6882

Thick sulfate evaporite accumulations marking a mid-Neoproterozoic oxygenation event (Ten Stone Formation, Northwest Territories, Canada)

Turner, E. C., & Bekker, A. (2015). Thick sulfate evaporite accumulations marking a mid-Neoproterozoic oxygenation event (Ten Stone Formation, Northwest Territories, Canada). Geological Society of America Bulletin, None, B31268.1. doi:10.1130/b31268.1

Nano- and micro-geochronology in Hadean and Archean zircons by atom-probe tomography and SIMS: New tools for old minerals

Valley, J. W., Reinhard, D. A., Cavosie, A. J., Ushikubo, T., Lawrence, D. F., Larson, D. J., … Strickland, A. (2015). Nano- and micro-geochronology in Hadean and Archean zircons by atom-probe tomography and SIMS: New tools for old minerals. American Mineralogist, 100(7), 1355–1377. doi:10.2138/am-2015-5134

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