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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March 2009Comparison of the microbial diversity at different depths of the GISP2 Greenland ice core in relationship to deposition climates

Miteva, V., Teacher, C., Sowers, T., & Brenchley, J. (2009). Environmental Microbiology, 11(3), 640–656. doi:10.1111/j.1462-2920.2008.01835.x

Mechanism of RNA Double Helix-Propagation at Atomic Resolution †

Mohan, S., Hsiao, C., VanDeusen, H., Gallagher, R., Krohn, E., Kalahar, B., … Wartell, R. M. (2009). J. Phys. Chem. B, 113(9), 2614–2623. doi:10.1021/jp8039884

An interlaboratory study of TEX 86 and BIT analysis using high-performance liquid chromatography-mass spectrometry

Schouten, S., Hopmans, E. C., Van Der Meer, J., Mets, A., Bard, E., Bianchi, T. S., … Diefendorf, A. (2009). Geochem. Geophys. Geosyst., 10(3), n/a–n/a. doi:10.1029/2008gc002221

Evaluating the role of microbial sulfate reduction in the early Archean using quadruple isotope systematics

Shen, Y., Farquhar, J., Masterson, A., Kaufman, A. J., & Buick, R. (2009). Earth and Planetary Science Letters, 279(3-4), 383–391. doi:10.1016/j.epsl.2009.01.018

February 2009Ecophysiology of "Halarsenatibacter silvermanii" Strain SLAS-1T, gen. nov., sp. nov., a Facultative Chemoautotrophic Arsenate Respirer from Salt-Saturated Searles Lake, California

Blum, J. S., Han, S., Lanoil, B., Saltikov, C., Witte, B., Tabita, F. R., … Langley, S. (2009). Applied and Environmental Microbiology, 75(7), 1950–1960. doi:10.1128/aem.02614-08

A hierarchical model for evolution of 23S ribosomal RNA

Bokov, K., & Steinberg, S. V. (2009). Nature, 457(7232), 977–980. doi:10.1038/nature07749

NONDETECTION OF THE NEPTUNE-MASS PLANET REPORTED AROUND GJ 176

Butler, R. P., Howard, A. W., Vogt, S. S., & Wright, J. T. (2009). The Astrophysical Journal, 691(2), 1738–1743. doi:10.1088/0004-637x/691/2/1738

Spore Photoproduct Lyase Catalyzes Specific Repair of the 5 R but Not the 5 S Spore Photoproduct

Chandra, T., Silver, S. C., Zilinskas, E., Shepard, E. M., Broderick, W. E., & Broderick, J. B. (2009). Journal of the American Chemical Society, 131(7), 2420–2421. doi:10.1021/ja807375c

DNA Denaturation Under Freezing in Alkaline Medium

Galyuk, E. N., Wartell, R. M., Dosin, Y. M., & Lando, D. Y. (2009). Journal of Biomolecular Structure and Dynamics, 26(4), 517–523. doi:10.1080/07391102.2009.10507267

Isotopic Evidence for an Aerobic Nitrogen Cycle in the Latest Archean

Garvin, J., Buick, R., Anbar, A. D., Arnold, G. L., & Kaufman, A. J. (2009). Science, 323(5917), 1045–1048. doi:10.1126/science.1165675

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