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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April 2015 THE CHEMICAL COMPOSITION OF τ CETI AND POSSIBLE EFFECTS ON TERRESTRIAL PLANETS

Pagano, M., Truitt, A., Young, P. A., & Shim, S-H. (2015). The Astrophysical Journal, 803(2), 90. doi:10.1088/0004-637x/803/2/90

Enrichment experiment changes microbial interactions in an ultra-oligotrophic environment

Ponce-Soto, G. Y., Aguirre-Von-Wobeser, E., Eguiarte, L. E., Elser, J. J., Lee, Z-P., & Souza, V. (2015). Frontiers in Microbiology, 6(None), None. doi:10.3389/fmicb.2015.00246

Reply to Dvořák et al.: Apparent evolutionary stasis of ancient subseafloor sulfur cycling biocoenoses

Schopf, J. W., Kudryavtsev, A. B., Walter, M. R., Van Kranendonk, M. J., Williford, K. H., Kozdon, R., … Valley, J. W. (2015). Proc Natl Acad Sci USA, 112(20), E2560–E2560. doi:10.1073/pnas.1503754112

Evolution of the Earth: Plate Tectonics Through Time

Sleep, N. H. (2015). Treatise on Geophysics, None(None), 145–172. doi:10.1016/b978-0-444-53802-4.00158-5

Modeling salt precipitation from brines on Mars: Evaporation versus freezing origin for soil salts

Toner, J. D., Catling, D. C., & Light, B. (2015). Icarus, 250(None), 451–461. doi:10.1016/j.icarus.2014.12.013

Metabolic associations with archaea drive shifts in hydrogen isotope fractionation in sulfate-reducing bacterial lipids in cocultures and methane seeps

Dawson, K. S., Osburn, M. R., Sessions, A. L., & Orphan, V. J. (2015). Geobiology, 13(5), 462–477. doi:10.1111/gbi.12140

Autoendoliths: a distinct type of rock-hosted microbial life

Marlow, J., Peckmann, J., & Orphan, V. (2015). Geobiology, 13(4), 303–307. doi:10.1111/gbi.12131

March 20157 Current perspectives on microbial strategies for survival under extreme nutrient starvation: evolution and ecophysiology

Glass, J. B., Kretz, C. B., Warren, M. J., & Ting, C. S. (n.d.). 7 Current perspectives on microbial strategies for survival under extreme nutrient starvation: evolution and ecophysiology. Microbial Evolution under Extreme Conditions. doi:10.1515/9783110340716.127

Tree of Life Reveals Clock-Like Speciation and Diversification

Hedges, S. B., Marin, J., Suleski, M., Paymer, M., & Kumar, S. (2015). Tree of Life Reveals Clock-Like Speciation and Diversification. Molecular Biology and Evolution, 32(4), 835–845. doi:10.1093/molbev/msv037

Origin of Metazoan Developmental Toolkits and Their Expression in the Fossil Record

Tweedt, S. M., & Erwin, D. H. (2015). Origin of Metazoan Developmental Toolkits and Their Expression in the Fossil Record. Advances in Marine Genomics, None, 47–77. doi:10.1007/978-94-017-9642-2_3

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