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 2015Thick sulfate evaporite accumulations marking a mid-Neoproterozoic oxygenation event (Ten Stone Formation, Northwest Territories, Canada)

Turner, E. C., & Bekker, A. (2015). Geological Society of America Bulletin, None(None), B31268.1. doi:10.1130/b31268.1

Imidazolium Catalysts Formed by an Iterative Synthetic Process as a Model System for Chemical Evolution

Clairmont, R. M., Bommarius, A. S., & Weber, A. L. (2015). Imidazolium Catalysts Formed by an Iterative Synthetic Process as a Model System for Chemical Evolution. Journal of Molecular Evolution, 81(1-2), 1–9. doi:10.1007/s00239-015-9687-7

227 Views of RNA: Is RNA Unique in Its Chemical Isomer Space?

Cleaves, H. J., Meringer, M., & Goodwin, J. (2015). 227 Views of RNA: Is RNA Unique in Its Chemical Isomer Space? Astrobiology, 15(7), 538–558. doi:10.1089/ast.2014.1213

Collision cross section calibrants for negative ion mode traveling wave ion mobility-mass spectrometry

Forsythe, J. G., Petrov, A. S., Walker, C. A., Allen, S. J., Pellissier, J. S., Bush, M. F., … Fernández, F. M. (2015). Collision cross section calibrants for negative ion mode traveling wave ion mobility-mass spectrometry. The Analyst, 140(20), 6853–6861. doi:10.1039/c5an00946d

Ester-Mediated Amide Bond Formation Driven by Wet-Dry Cycles: A Possible Path to Polypeptides on the Prebiotic Earth

Forsythe, J. G., Yu, S-S., Mamajanov, I., Grover, M. A., Krishnamurthy, R., Fernández, F. M., & Hud, N. V. (2015). Ester-Mediated Amide Bond Formation Driven by Wet-Dry Cycles: A Possible Path to Polypeptides on the Prebiotic Earth. Angewandte Chemie International Edition, 54(34), 9871–9875. doi:10.1002/anie.201503792

Comparison of the Mitochondrial Genomes and Steady State Transcriptomes of Two Strains of the Trypanosomatid Parasite, Leishmania tarentolae

Simpson, L., Douglass, S. M., Lake, J. A., Pellegrini, M., & Li, F. (2015). Comparison of the Mitochondrial Genomes and Steady State Transcriptomes of Two Strains of the Trypanosomatid Parasite, Leishmania tarentolae. PLOS Neglected Tropical Diseases, 9(7), e0003841. doi:10.1371/journal.pntd.0003841

A Geomimetic Approach to the Formation and Identification of Fossil Sterane Biomarkers in Crude Oil: 18- nor - D - homo -Androstane and 5α,14β-Androstane

Bender, M., Schmidtmann, M., Summons, R. E., Rullkötter, J., & Christoffers, J. (2015). Chem. Eur. J., 21(35), 12501–12508. doi:10.1002/chem.201502148

Patterns of sulfur isotope fractionation during microbial sulfate reduction

Bradley, A. S., Leavitt, W. D., Schmidt, M., Knoll, A. H., Girguis, P. R., & Johnston, D. T. (2015). Geobiology, 14(1), 91–101. doi:10.1111/gbi.12149

RNA Oligomerization in Laboratory Analogues of Alkaline Hydrothermal Vent Systems

Burcar, B. T., Barge, L. M., Trail, D., Watson, E. B., Russell, M. J., & McGown, L. B. (2015). Astrobiology, 15(7), 509–522. doi:10.1089/ast.2014.1280

Astrochemistry: Fullerene solves an interstellar puzzle

Ehrenfreund, P., & Foing, B. (2015). Nature, 523(7560), 296–297. doi:10.1038/523296a

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