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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December 2013A Habitable Fluvio-Lacustrine Environment at Yellowknife Bay, Gale Crater, Mars

Grotzinger, J. P., Sumner, D. Y., Kah, L. C., Stack, K., Gupta, S., Edgar, L., … Rubin, D. (2013). Science, 343(6169), 1242777–1242777. doi:10.1126/science.1242777

Mars' Surface Radiation Environment Measured with the Mars Science Laboratory's Curiosity Rover

Hassler, D. M., Zeitlin, C., Wimmer-Schweingruber, R. F., Ehresmann, B., Rafkin, S., Eigenbrode, J. L., … Brinza, D. E. (2013). Science, 343(6169), 1244797–1244797. doi:10.1126/science.1244797

A SURVEY FOR VERY SHORT-PERIOD PLANETS IN THE KEPLER DATA

Jackson, B., Stark, C. C., Adams, E. R., Chambers, J., & Deming, D. (2013). The Astrophysical Journal, 779(2), 165. doi:10.1088/0004-637x/779/2/165

Molecular and lipid biomarker analysis of a gypsum-hosted endoevaporitic microbial community

Jahnke, L. L., Turk-Kubo, K. A., N. Parenteau, M., Green, S. J., Kubo, M. D. Y., Vogel, M., … Summons, R. E. (2013). Geobiology, 12(1), 62–82. doi:10.1111/gbi.12068

Searching for an oxygenation event in the fossiliferous Ediacaran of northwestern Canada

Johnston, D. T., Poulton, S. W., Tosca, N. J., O'Brien, T., Halverson, G. P., Schrag, D. P., & Macdonald, F. A. (2013). Chemical Geology, 362(None), 273–286. doi:10.1016/j.chemgeo.2013.08.046

What caused the rise of atmospheric O2?

Kasting, J. F. (2013). Chemical Geology, 362(None), 13–25. doi:10.1016/j.chemgeo.2013.05.039

Extrasolar planets: Inner edge of the habitable zone

Kasting, J. F., & Harman, C. E. (2013). Nature, 504(7479), 221–223. doi:10.1038/504221a

Uranium isotope fractionation suggests oxidative uranium mobilization at 2.50Ga

Kendall, B., Brennecka, G. A., Weyer, S., & Anbar, A. D. (2013). Chemical Geology, 362(None), 105–114. doi:10.1016/j.chemgeo.2013.08.010

Contrasting behavior of oxygen and iron isotopes in banded iron formations revealed by in situ isotopic analysis

Li, W., Huberty, J. M., Beard, B. L., Kita, N. T., Valley, J. W., & Johnson, C. M. (2013). Earth and Planetary Science Letters, 384(None), 132–143. doi:10.1016/j.epsl.2013.10.014

The stratigraphic relationship between the Shuram carbon isotope excursion, the oxygenation of Neoproterozoic oceans, and the first appearance of the Ediacara biota and bilaterian trace fossils in northwestern Canada

Macdonald, F. A., Strauss, J. V., Sperling, E. A., Halverson, G. P., Narbonne, G. M., Johnston, D. T., … Kunzmann, M. (2013). Chemical Geology, 362(None), 250–272. doi:10.1016/j.chemgeo.2013.05.032

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