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 2009Flourishing After the End-Permian Mass Extinction

Marshall, C. R., & Jacobs, D. K. (2009). Science, 325(5944), 1079–1080. doi:10.1126/science.1178325

Shallow basins on Mercury: Evidence of relaxation?

Mohit, P. S., Johnson, C. L., Barnouin-Jha, O., Zuber, M. T., & Solomon, S. C. (2009). Earth and Planetary Science Letters, 285(3-4), 355–363. doi:10.1016/j.epsl.2009.04.023

Insights into the formation of Fe- and Mg-rich aqueous solutions on early Mars provided by the ALH 84001 carbonates

Niles, P. B., Zolotov, M. Y., & Leshin, L. A. (2009). Earth and Planetary Science Letters, 286(1-2), 122–130. doi:10.1016/j.epsl.2009.06.039

THE FREQUENCY OF LOW-MASS EXOPLANETS

O'Toole, S. J., Jones, H. R. A., Tinney, C. G., Butler, R. P., Marcy, G. W., Carter, B., … Bailey, J. (2009). The Astrophysical Journal, 701(2), 1732–1741. doi:10.1088/0004-637x/701/2/1732

Mercury'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

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