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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October 2011An Alternative Path for the Evolution of Biological Nitrogen Fixation

Boyd, E. S., Hamilton, T. L., & Peters, J. W. (2011). Frontiers in Microbiology, 2(None), None. doi:10.3389/fmicb.2011.00205

Rapid expansion of oceanic anoxia immediately before the end-Permian mass extinction

Brennecka, G. A., Herrmann, A. D., Algeo, T. J., & Anbar, A. D. (2011). Proceedings of the National Academy of Sciences, 108(43), 17631–17634. doi:10.1073/pnas.1106039108

Hydrogen production in photosynthetic microbial mats in the Elkhorn Slough estuary, Monterey Bay

Burow, L. C., Woebken, D., Bebout, B. M., McMurdie, P. J., Singer, S. W., Pett-Ridge, J., … Prufert-Bebout, L. (2011). ISME J, 6(4), 863–874. doi:10.1038/ismej.2011.142

Heterogeneous distributions of amino acids provide evidence of multiple sources within the Almahata Sitta parent body, asteroid 2008 TC3

Burton, A. S., Glavin, D. P., Callahan, M. P., Dworkin, J. P., Jenniskens, P., & Shaddad, M. H. (2011). Meteoritics & Planetary Science, 46(11), 1703–1712. doi:10.1111/j.1945-5100.2011.01257.x

Refugium for surface life on Snowball Earth in a nearly-enclosed sea? A first simple model for sea-glacier invasion

Campbell, A. J., Waddington, E. D., & Warren, S. G. (2011). Geophysical Research Letters, 38(19), n/a–n/a. doi:10.1029/2011gl048846

Copper toxicity and the origin of bacterial resistance—new insights and applications

Dupont, C. L., Grass, G., & Rensing, C. (2011). Metallomics, 3(11), 1109. doi:10.1039/c1mt00107h

A Multiple-Choice Essay

Ehrenfreund, P. (2011). Astrobiology, 11(8), 737–741. doi:10.1089/ast.2011.0697

Comparisons of the four Miller Range nakhlites, MIL 03346, 090030, 090032 and 090136: Textural and compositional observations of primary and secondary mineral assemblages

Hallis, L. J., & Taylor, G. J. (2011). Meteoritics & Planetary Science, 46(12), 1787–1803. doi:10.1111/j.1945-5100.2011.01293.x

Ocean-like water in the Jupiter-family comet 103P/Hartley 2

Hartogh, P., Lis, D. C., Bockelée-Morvan, D., De Val-Borro, M., Biver, N., Küppers, M., … Emprechtinger, M. (2011). Nature, 478(7368), 218–220. doi:10.1038/nature10519

SIMS analyses of silicon and oxygen isotope ratios for quartz from Archean and Paleoproterozoic banded iron formations

Heck, P. R., Huberty, J. M., Kita, N. T., Ushikubo, T., Kozdon, R., & Valley, J. W. (2011). Geochimica et Cosmochimica Acta, 75(20), 5879–5891. doi:10.1016/j.gca.2011.07.023

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