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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April 2011Defining 5S rRNA Structure Space: Point Mutation Data Can Be Used to Predict the Phenotype of Multichange Variants

Nayar, M., & Fox, G. E. (2011). Molecular Biology and Evolution, 28(9), 2629–2636. doi:10.1093/molbev/msr090

Passive scalar structures in supersonic turbulence

Pan, L., & Scannapieco, E. (2011). Phys. Rev. E, 83(4), None. doi:10.1103/physreve.83.045302

Iron isotope fractionation during microbial dissimilatory iron oxide reduction in simulated Archaean seawater

Percak-Dennett, E. M., Beard, B. L., Xu, H., Konishi, H., Johnson, C. M., & Roden, E. E. (2011). Geobiology, 9(3), 205–220. doi:10.1111/j.1472-4669.2011.00277.x

Did Evolution Select a Nonrandom “Alphabet” of Amino Acids?

Philip, G. K., & Freeland, S. J. (2011). Astrobiology, 11(3), 235–240. doi:10.1089/ast.2010.0567

Characteristics, distribution, origin, and significance of opaline silica observed by the Spirit rover in Gusev crater, Mars

Ruff, S. W., Farmer, J. D., Calvin, W. M., Herkenhoff, K. E., Johnson, J. R., Morris, R. V., … Rice, M. S. (2011). Journal of Geophysical Research, 116(None), None. doi:10.1029/2010je003767

A SPITZER SURVEY OF MID-INFRARED MOLECULAR EMISSION FROM PROTOPLANETARY DISKS. II. CORRELATIONS AND LOCAL THERMAL EQUILIBRIUM MODELS

Salyk, C., Pontoppidan, K. M., Blake, G. A., Najita, J. R., & Carr, J. S. (2011). The Astrophysical Journal, 731(2), 130. doi:10.1088/0004-637x/731/2/130

Biosynthesis of complex iron–sulfur enzymes

Shepard, E. M., Boyd, E. S., Broderick, J. B., & Peters, J. W. (2011). Current Opinion in Chemical Biology, 15(2), 319–327. doi:10.1016/j.cbpa.2011.02.012

Small-scale convection beneath oceans and continents

Sleep, N. H. (2011). Chin. Sci. Bull., 56(13), 1292–1317. doi:10.1007/s11434-011-4435-x

Sulfolobus Turreted Icosahedral Virus c92 Protein Responsible for the Formation of Pyramid-Like Cellular Lysis Structures

Snyder, J. C., Brumfield, S. K., Peng, N., She, Q., & Young, M. J. (2011). Journal of Virology, 85(13), 6287–6292. doi:10.1128/jvi.00379-11

Detection of CH + emission from the disc around HD 100546

Thi, W-F., Ménard, F., Meeus, G., Martin-Zaïdi, C., Woitke, P., Tatulli, E., … Benisty, M. (2011). A&A, 530(None), L2. doi:10.1051/0004-6361/201116678

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