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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December 2016Micropaleontology of the lower Mesoproterozoic Roper Group, Australia, and implications for early eukaryotic evolution

Javaux, E. J., & Knoll, A. H. (2016). Micropaleontology of the lower Mesoproterozoic Roper Group, Australia, and implications for early eukaryotic evolution. Journal of Paleontology, 91(02), 199–229. doi:10.1017/jpa.2016.124

Distribution and origin of ground ice in University Valley, McMurdo Dry Valleys, Antarctica

Lapalme, C., Lacelle, D., Pollard, W., Fisher, D., Davila, A., & McKay, C. P. (2016). Distribution and origin of ground ice in University Valley, McMurdo Dry Valleys, Antarctica. Antarctic Science, 29(02), 183–198. doi:10.1017/s0954102016000572

November 2016Genome-wide gene expression and RNA half-life measurements allow predictions of regulation and metabolic behavior in Methanosarcina acetivorans

Peterson, J. R., Thor, S., Kohler, L., Kohler, P. R. A., Metcalf, W. W., & Luthey-Schulten, Z. (2016). Genome-wide gene expression and RNA half-life measurements allow predictions of regulation and metabolic behavior in Methanosarcina acetivorans . BMC Genomics, 17(1), None. doi:10.1186/s12864-016-3219-8

Atmospheric constituents and surface-level UVB: Implications for a paleoaltimetry proxy and attempts to reconstruct UV exposure during volcanic episodes

Thomas, B. C., Goracke, B. D., & Dalton, S. M. (2016). Atmospheric constituents and surface-level UVB: Implications for a paleoaltimetry proxy and attempts to reconstruct UV exposure during volcanic episodes. Earth and Planetary Science Letters, 453, 141–151. doi:10.1016/j.epsl.2016.08.014

The origin and occurrence of subaqueous sedimentary cracks

McMahon, S., Van Smeerdijk Hood, A., & McIlroy, D. (2016). The origin and occurrence of subaqueous sedimentary cracks. Geological Society, London, Special Publications, 448(1), 285–309. doi:10.1144/sp448.15

A Plausible Prebiotic Origin of Glyoxylate: Nonenzymatic Transamination Reactions of Glycine with Formaldehyde

Krishnamurthy, R., Liotta, C., Mohammed, F., Chen, K., Mojica, M., Conley, M., … Pollet, P. (2016). A Plausible Prebiotic Origin of Glyoxylate: Nonenzymatic Transamination Reactions of Glycine with Formaldehyde. Synlett, 28(01), 93–97. doi:10.1055/s-0036-1588657

The Abiotic Oxidation of Organic Acids to Malonate

Springsteen, G., Rice, G., Yerabolu, J., & Krishnamurthy, R. (2016). The Abiotic Oxidation of Organic Acids to Malonate. Synlett, 28(01), 98–102. doi:10.1055/s-0036-1588649

October 2016Carbon Monoxide and the Potential for Prebiotic Chemistry on Habitable Planets around Main Sequence M Stars

Nava-Sedeño, J. M., Ortiz-Cervantes, A., Segura, A., & Domagal-Goldman, S. D. (2016). Carbon Monoxide and the Potential for Prebiotic Chemistry on Habitable Planets around Main Sequence M Stars. Astrobiology, 16(10), 744–754. doi:10.1089/ast.2015.1435

In situ confocal laser scanning microscopy and Raman spectroscopy of bisaccate pollen from the Irati Subgroup (Permian, Paraná Basin, Brazil): Comparison with acid-macerated specimens

Schopf, J. W., CalçA, C. P., Garcia, A. K., Kudryavtsev, A. B., Souza, P. A., Félix, C. M., & Fairchild, T. R. (2016). In situ confocal laser scanning microscopy and Raman spectroscopy of bisaccate pollen from the Irati Subgroup (Permian, Paraná Basin, Brazil): Comparison with acid-macerated specimens. Review of Palaeobotany and Palynology, 233, 169–175. doi:10.1016/j.revpalbo.2016.03.004

ON THE INFERENCE OF THE COSMIC-RAY IONIZATION RATE ζ FROM THE HCO+-to-DCO+ ABUNDANCE RATIO: THE EFFECT OF NUCLEAR SPIN

Shingledecker, C. N., Bergner, J. B., Le Gal, R., Öberg, K. I., Hincelin, U., & Herbst, E. (2016). ON THE INFERENCE OF THE COSMIC-RAY IONIZATION RATE ζ FROM THE HCO+-to-DCO+ ABUNDANCE RATIO: THE EFFECT OF NUCLEAR SPIN. The Astrophysical Journal, 830(2), 151. doi:10.3847/0004-637x/830/2/151

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