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 2014Report of the workshop for life detection in samples from Mars

Kminek, G., Conley, C., Allen, C. C., Bartlett, D. H., Beaty, D. W., Benning, L. G., … Bhartia, R. (2014). Life Sciences in Space Research, 2(None), 1–5. doi:10.1016/j.lssr.2014.05.001

Feedbacks between flow, sediment motion and microbial growth on sand bars initiate and shape elongated stromatolite mounds

Mariotti, G., Perron, J. T., & Bosak, T. (2014). Earth and Planetary Science Letters, 397(None), 93–100. doi:10.1016/j.epsl.2014.04.036

Prokaryotic cells separated from sediments are suitable for elemental composition analysis

Neveu, M., Poret-Peterson, A. T., Lee, Z. M. P., Anbar, A. D., & Elser, J. J. (2014). Limnol. Oceanogr. Methods, 12(7), 519–529. doi:10.4319/lom.2014.12.519

Cell-secreted Flavins Bound to Membrane Cytochromes Dictate Electron Transfer Reactions to Surfaces with Diverse Charge and pH

Okamoto, A., Kalathil, S., Deng, X., Hashimoto, K., Nakamura, R., & Nealson, K. H. (2014). Scientific Reports, 4(None), None. doi:10.1038/srep05628

Z-contrast imaging and ab initio study on "d" superstructure in sedimentary dolomite

Shen, Z., Konishi, H., Szlufarska, I., Brown, P. E., & Xu, H. (2014). American Mineralogist, 99(7), 1413–1419. doi:10.2138/am.2014.4647

Modeling the Effect of Dissolved Hydrogen Sulfide on Mg 2+ –Water Complex on Dolomite {104} Surfaces

Shen, Z., Liu, Y., Brown, P. E., Szlufarska, I., & Xu, H. (2014). The Journal of Physical Chemistry C, 118(29), 15716–15722. doi:10.1021/jp5028417

Subaqueous shrinkage cracks in the Sheepbed mudstone: Implications for early fluid diagenesis, Gale crater, Mars

Siebach, K. L., Grotzinger, J. P., Kah, L. C., Stack, K. M., Malin, M., Léveillé, R., & Sumner, D. Y. (2014). Journal of Geophysical Research: Planets, 119(7), 1597–1613. doi:10.1002/2014je004623

Investigation of pyridine carboxylic acids in CM2 carbonaceous chondrites: Potential precursor molecules for ancient coenzymes

Smith, K. E., Callahan, M. P., Gerakines, P. A., Dworkin, J. P., & House, C. H. (2014). Geochimica et Cosmochimica Acta, 136(None), 1–12. doi:10.1016/j.gca.2014.04.001

Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars

Stack, K. M., Grotzinger, J. P., Kah, L. C., Schmidt, M. E., Mangold, N., Edgett, K. S., … Sumner, D. Y. (2014). Journal of Geophysical Research: Planets, 119(7), 1637–1664. doi:10.1002/2014je004617

ALIGNMENT OF THE SCALAR GRADIENT IN EVOLVING MAGNETIC FIELDS

Sur, S., Pan, L., & Scannapieco, E. (2014). The Astrophysical Journal, 790(1), L9. doi:10.1088/2041-8205/790/1/l9

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