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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August 2013On the antiquity of metalloenzymes and their substrates in bioenergetics

Nitschke, W., McGlynn, S. E., Milner-White, E. J., & Russell, M. J. (2013). Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1827(8-9), 871–881. doi:10.1016/j.bbabio.2013.02.008

Science Potential from a Europa Lander

Pappalardo, R. T., Vance, S., Bagenal, F., Bills, B. G., Blaney, D. L., Blankenship, D. D., … Brinckerhoff, W. B. (2013). Astrobiology, 13(8), 740–773. doi:10.1089/ast.2013.1003

Nitrogen losses in anoxic marine sediments driven by Thioploca–anammox bacterial consortia

Prokopenko, M. G., Hirst, M. B., De Brabandere, L., Lawrence, D. J. P., Berelson, W. M., Granger, J., … Chang, B. X. (2013). Nature, 500(7461), 194–198. doi:10.1038/nature12365

Nanometer scale pores similar in size to the entrance of the ribosomal exit cavity are a common feature of large RNAs

Rivas, M., Tran, Q., & Fox, G. E. (2013). RNA, 19(10), 1349–1354. doi:10.1261/rna.038828.113

SECRETLY ECCENTRIC: THE GIANT PLANET AND ACTIVITY CYCLE OF GJ 328

Robertson, P., Endl, M., Cochran, W. D., MacQueen, P. J., & Boss, A. P. (2013). The Astrophysical Journal, 774(2), 147. doi:10.1088/0004-637x/774/2/147

Spatial and temporal variability of biomarkers and microbial diversity reveal metabolic and community flexibility in Streamer Biofilm Communities in the Lower Geyser Basin, Yellowstone National Park

Schubotz, F., Meyer-Dombard, D. R., Bradley, A. S., Fredricks, H. F., Hinrichs, K-U., Shock, E. L., & Summons, R. E. (2013). Geobiology, None(None), n/a–n/a. doi:10.1111/gbi.12051

Characterization of the stem anatomy of the Eocene fern Dennstaedtiopsis aerenchymata (Dennstaedtiaceae) by use of confocal laser scanning microscopy

Shi, C. S., Schopf, J. W., & Kudryavtsev, A. B. (2013). American Journal of Botany, 100(8), 1626–1640. doi:10.3732/ajb.1300027

The Effect of Host Star Spectral Energy Distribution and Ice-Albedo Feedback on the Climate of Extrasolar Planets

Shields, A. L., Meadows, V. S., Bitz, C. M., Pierrehumbert, R. T., Joshi, M. M., & Robinson, T. D. (2013). Astrobiology, 13(8), 715–739. doi:10.1089/ast.2012.0961

Beginning of activity in 67P/Churyumov-Gerasimenko and predictions for 2014–2015

Snodgrass, C., Tubiana, C., Bramich, D. M., Meech, K., Boehnhardt, H., & Barrera, L. (2013). A&A, 557(None), A33. doi:10.1051/0004-6361/201322020

miRNAs: Small Genes with Big Potential in Metazoan Phylogenetics

Tarver, J. E., Sperling, E. A., Nailor, A., Heimberg, A. M., Robinson, J. M., King, B. L., … Pisani, D. (2013). Molecular Biology and Evolution, 30(11), 2369–2382. doi:10.1093/molbev/mst133

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