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 2009Mercury's internal magnetic field: Constraints on large- and small-scale fields of crustal origin

Purucker, M. E., Sabaka, T. J., Solomon, S. C., Anderson, B. J., Korth, H., Zuber, M. T., & Neumann, G. A. (2009). Earth and Planetary Science Letters, 285(3-4), 340–346. doi:10.1016/j.epsl.2008.12.017

VARIABLE SODIUM ABSORPTION IN A LOW-EXTINCTION TYPE Ia SUPERNOVA,

Simon, J. D., Gal-Yam, A., Gnat, O., Quimby, R. M., Ganeshalingam, M., Silverman, J. M., … Blondin, S. (2009). The Astrophysical Journal, 702(2), 1157–1170. doi:10.1088/0004-637x/702/2/1157

Geological sulfur isotopes indicate elevated OCS in the Archean atmosphere, solving faint young sun paradox

Ueno, Y., Johnson, M. S., Danielache, S. O., Eskebjerg, C., Pandey, A., & Yoshida, N. (2009). Proceedings of the National Academy of Sciences, 106(35), 14784–14789. doi:10.1073/pnas.0903518106

Modeling Mercury's internal magnetic field with smooth inversions

Uno, H., Johnson, C. L., Anderson, B. J., Korth, H., & Solomon, S. C. (2009). Earth and Planetary Science Letters, 285(3-4), 328–339. doi:10.1016/j.epsl.2009.02.032

Emplacement and tectonic deformation of smooth plains in the Caloris basin, Mercury

Watters, T. R., Murchie, S. L., Robinson, M. S., Solomon, S. C., Denevi, B. W., André, S. L., & Head, J. W. (2009). Earth and Planetary Science Letters, 285(3-4), 309–319. doi:10.1016/j.epsl.2009.03.040

The tectonics of Mercury: The view after MESSENGER's first flyby

Watters, T. R., Solomon, S. C., Robinson, M. S., Head, J. W., André, S. L., Hauck, S. A., & Murchie, S. L. (2009). Earth and Planetary Science Letters, 285(3-4), 283–296. doi:10.1016/j.epsl.2009.01.025

Evidence from 40Ar/39Ar ages of lunar impact glasses for an increase in the impact rate ∼800Ma ago

Zellner, N. E. B., Delano, J. W., Swindle, T. D., Barra, F., Olsen, E., & Whittet, D. C. B. (2009). Geochimica et Cosmochimica Acta, 73(15), 4590–4597. doi:10.1016/j.gca.2009.04.027

July 2009The Magnetic Field of Mercury

Anderson, B. J., AcuñA, M. H., Korth, H., Slavin, J. A., Uno, H., Johnson, C. L., … Purucker, M. E. (2009). Space Sci Rev, 152(1-4), 307–339. doi:10.1007/s11214-009-9544-3

Manganese- and Iron-Dependent Marine Methane Oxidation

Beal, E. J., House, C. H., & Orphan, V. J. (2009). Science, 325(5937), 184–187. doi:10.1126/science.1169984

Abundant transposases encoded by the metagenome of a hydrothermal chimney biofilm

Brazelton, W. J., & Baross, J. A. (2009). ISME J, 3(12), 1420–1424. doi:10.1038/ismej.2009.79

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