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 2009Phylogenetic-Signal Dissection of Nuclear Housekeeping Genes Supports the Paraphyly of Sponges and the Monophyly of Eumetazoa

Sperling, E. A., Peterson, K. J., & Pisani, D. (2009). Molecular Biology and Evolution, 26(10), 2261–2274. doi:10.1093/molbev/msp148

Large iron isotope fractionation at the oxic–anoxic boundary in Lake Nyos

Teutsch, N., Schmid, M., Müller, B., Halliday, A. N., Bürgmann, H., & Wehrli, B. (2009). Earth and Planetary Science Letters, 285(1-2), 52–60. doi:10.1016/j.epsl.2009.05.044

Liquid water on Enceladus from observations of ammonia and 40Ar in the plume

Waite Jr, J. H., Lewis, W. S., Magee, B. A., Lunine, J. I., McKinnon, W. B., Glein, C. R., … Mousis, O. (2009). Nature, 460(7254), 487–490. doi:10.1038/nature08153

Permeation of Membranes by Ribose and Its Diastereomers

Wei, C., & Pohorille, A. (2009). Journal of the American Chemical Society, 131(29), 10237–10245. doi:10.1021/ja902531k

The Late Pleistocene distribution of vicuñas (Vicugna vicugna) and the “extinction” of the gracile llama (“Lama gracilis”): New molecular data

Weinstock, J., Shapiro, B., Prieto, A., Marín, J. C., González, B. A., Gilbert, M. T. P., & Willerslev, E. (2009). Quaternary Science Reviews, 28(15-16), 1369–1373. doi:10.1016/j.quascirev.2009.03.008

June 2009Engineering algae for biohydrogen and biofuel production

Beer, L. L., Boyd, E. S., Peters, J. W., & Posewitz, M. C. (2009). Engineering algae for biohydrogen and biofuel production. Current Opinion in Biotechnology, 20(3), 264–271. doi:10.1016/j.copbio.2009.06.002

A comparison of water vapor line parameters for modeling the Venus deep atmosphere

Bailey, J. (2009). Icarus, 201(2), 444–453. doi:10.1016/j.icarus.2009.01.013

TIDAL LIMITS TO PLANETARY HABITABILITY

Barnes, R., Jackson, B., Greenberg, R., & Raymond, S. N. (2009). The Astrophysical Journal, 700(1), L30–L33. doi:10.1088/0004-637x/700/1/l30

REAL-TIME OPTICAL SPECTROSCOPY OF VACUUM ULTRAVIOLET IRRADIATED PYRENE:H 2 O INTERSTELLAR ICE

Bouwman, J., Paardekooper, D. M., Cuppen, H. M., Linnartz, H., & Allamandola, L. J. (2009). The Astrophysical Journal, 700(1), 56–62. doi:10.1088/0004-637x/700/1/56

A biomarker based on the stable isotopes of nickel

Cameron, V., Vance, D., Archer, C., & House, C. H. (2009). Proceedings of the National Academy of Sciences, 106(27), 10944–10948. doi:10.1073/pnas.0900726106

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