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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May 2012Sulfur isotope variability of oceanic DMSP generation and its contributions to marine biogenic sulfur emissions

Oduro, H., Van Alstyne, K. L., & Farquhar, J. (2012). Proceedings of the National Academy of Sciences, 109(23), 9012–9016. doi:10.1073/pnas.1117691109

The pollution of pristine material in compressible turbulence

Pan, L., Scannapieco, E., & Scalo, J. (2012). Journal of Fluid Mechanics, 700(None), 459–489. doi:10.1017/jfm.2012.143

FREE-FREE EMISSION AND RADIO RECOMBINATION LINES FROM PHOTOEVAPORATING DISKS

Pascucci, I., Gorti, U., & Hollenbach, D. (2012). The Astrophysical Journal, 751(2), L42. doi:10.1088/2041-8205/751/2/l42

Water-sediment niche differentiation in ancient marine lineages of Exiguobacterium endemic to the Cuatro Cienegas Basin

Rebollar, E. A., Avitia, M., Eguiarte, L. E., González-González, A., Mora, L., Bonilla-Rosso, G., & Souza, V. (2012). Environmental Microbiology, 14(9), 2323–2333. doi:10.1111/j.1462-2920.2012.02784.x

The Microbial Ferrous Wheel in a Neutral pH Groundwater Seep

Roden, E. E., McBeth, J. M., BlöThe, M., Percak-Dennett, E. M., Fleming, E. J., Holyoke, R. R., … Luther, G. W. (2012). Frontiers in Microbiology, 3(None), None. doi:10.3389/fmicb.2012.00172

Multiple sulfur isotopes in Paleoarchean barites identify an important role for microbial sulfate reduction in the early marine environment

Roerdink, D. L., Mason, P. R. D., Farquhar, J., & Reimer, T. (2012). Earth and Planetary Science Letters, 331-332(None), 177–186. doi:10.1016/j.epsl.2012.03.020

Reduction of Nitrite and Nitrate to Ammonium on Pyrite

Singireddy, S., Gordon, A. D., Smirnov, A., Vance, M. A., Schoonen, M. A. A., Szilagyi, R. K., & Strongin, D. R. (2012). Orig Life Evol Biosph, 42(4), 275–294. doi:10.1007/s11084-012-9271-8

Ancient Impact and Aqueous Processes at Endeavour Crater, Mars

Squyres, S. W., Arvidson, R. E., Bell, J. F., Calef, F., Clark, B. C., Cohen, B. A., … Crumpler, L. A. (2012). Science, 336(6081), 570–576. doi:10.1126/science.1220476

A Reduced Organic Carbon Component in Martian Basalts

Steele, A., McCubbin, F. M., Fries, M., Kater, L., Boctor, N. Z., Fogel, M. L., … Conrad, P. G. (2012). Science, 337(6091), 212–215. doi:10.1126/science.1220715

Kepler constraints on planets near hot Jupiters

Steffen, J. H., Ragozzine, D., Fabrycky, D. C., Carter, J. A., Ford, E. B., Holman, M. J., … Rowe, J. F. (2012). Proceedings of the National Academy of Sciences, 109(21), 7982–7987. doi:10.1073/pnas.1120970109

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